Subject term: 2,2-diphenyl-1-picrylhydrazyl and quercetin / Text availability: Citation in PubAg

1. 1-Methylcyclopropene (1-MCP), storage time, and shelf life and temperature affect phenolic compounds and antioxidant activity of ‘Jonagold’ apple

Author:: Yurong Ma; Qingfeng Ban; Jingying Shi; Tiantian Dong; Cai-Zhong Jiang; Qingguo Wang
Source:: Postharvest biology and technology 2019 v.150 pp. 71-79
ISSN:: 0925-5214
Subject:: 1-methylcyclopropene; 2,2-diphenyl-1-picrylhydrazyl; Malus domestica; antioxidant activity; apple peels; apples; chlorogenic acid; protective effect; quercetin; rutin; shelf life; storage time; temperature; tissues
Abstract:: ... The effects of 1-methylcyclopropene (1-MCP) treatment, storage time, and shelf life and temperature on phenolic concentrations and antioxidant activity in apple peel and flesh of ‘Jonagold’ apple (Malus domestica Borkh) have been investigated. Hyperoside and chlorogenic acid were the most abundant phenolic compounds in the peel and flesh, respectively. The flesh had lower concentrations of individ ...
DOI:: 10.1016/j.postharvbio.2018.12.015
: https://doi.org/10.1016/j.postharvbio.2018.12.015

2. 1H NMR-Based Metabolomics Approach in Investigating the Chemical Profile, Antioxidant and Anti-Inflammatory Activities of Gynura procumbens and Cleome gynandra

Author:: Machap Chandradevan; Sanimah Simoh; Ahmed Mediani; Intan Safinar Ismail; Faridah Abas
Source:: Plant foods for human nutrition 2020 v.75 no.2 pp. 243-251
ISSN:: 0921-9668
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Gynandropsis gynandra; Gynura procumbens; anti-inflammatory activity; antioxidant activity; chemical composition; choline; citric acid; gallic acid; herbs; kaempferol; least squares; macrophages; metabolites; metabolomics; models; nitric oxide; nuclear magnetic resonance spectroscopy; phenylalanine; principal component analysis; quercetin; salads; vegetables; Malaysia
Abstract:: ... Gynura procumbens and Cleome gynandra are two herbs commonly used in Malaysia to treat various ailments and are also consumed as salads (ulam) and vegetables. The present study aims to evaluate the relationship between the chemical compositions of both herbs and their antioxidant and anti-inflammatory properties using nuclear magnetic resonance (NMR) metabolomics approach, which is being reported ...
DOI:: 10.1007/s11130-020-00805-3
: https://doi.org/10.1007/s11130-020-00805-3

3. 3-O-trans-Caffeoylisomyricadiol: A New Triterpenoid from Tamarix nilotica Growing in Saudi Arabia

Author:: Raha S. Orfali; Sherif S. Ebada; Azza M. El-Shafae; Areej M. Al-Taweel; Wen H. Lin; Victor Wray; Peter Proksch
Source:: Zeitschrift für Naturforschung 2014 v.64 no.9-10 pp. 637-643
ISSN:: 1865-7125
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Tamarix nilotica; aerial parts; antioxidant activity; antioxidants; inhibitory concentration 50; mass spectrometry; nuclear magnetic resonance spectroscopy; quercetin; triterpenoids; Saudi Arabia
Abstract:: ... A detailed chemical study of the aerial parts of Tamarix nilotica (Tamaricaceae) from Saudi Arabia led to the isolation of a new pentacyclic triterpenoid, 3-O-trans-caffeoylisomyricadiol, in addition to nine known compounds. The structures of all isolated compounds were unambiguously elucidated by 1D, 2D NMR, and mass spectrometry. In the radical scavenging (DPPH) assay, 3-O-trans-caffeoylisomyric ...
DOI:: 10.1515/znc-2009-9-1006
: https://doi.org/10.1515/znc-2009-9-1006

4. A Report on the In Vitro Antioxidant Properties of Vachellia karroo Leaf Extract: A Plant Widely Grazed by Goats in the Central Eastern Cape of South Africa

Author:: Emrobowansan M. Idamokoro; Patrick J. Masika; Voster Muchenje
Source:: Sustainability 2017 v.9 no.2 pp. -
ISSN:: 2071-1050
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Vachellia; acetone; antioxidant activity; antioxidants; ascorbic acid; butylated hydroxytoluene; ferric oxide; free radicals; goats; leaf extracts; leaves; models; nitric oxide; quercetin; tannins; South Africa
Abstract:: ... The polyphenolic constituents and antioxidant activity of aqueous and acetone extracts of Vachellia karroo leaves were determined in order to evaluate its efficacy in scavenging radicals such as DPPH, ferric reducing power and nitric oxide as an antioxidant model. The flavonols and flavonoid and phenolic content of the leaf extracts were also accessed using benchmark phytochemical reaction methods ...
DOI:: 10.3390/su9020164
: https://doi.org/10.3390/su9020164

5. A Study of Polyphenol Fractions in an Extract from the Brown Alga Thalassiophyllum clathrus (Postels & Ruprecht, 1840) and Their Antioxidant Activities

Author:: E. P. Karaulova; N. M. Aminina; T. I. Vishnevskaya; E. V. Yakush
Source:: Russian journal of marine biology 2021 v.47 no.2 pp. 134-142
ISSN:: 1063-0740
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Agarum; Clathrus; antioxidant activity; antioxidants; caffeic acid; chlorogenic acid; ethyl acetate; formic acid; gallic acid; gel chromatography; kaempferol; liquid-liquid extraction; pH; polyphenols; quercetin; reversed-phase liquid chromatography; temperature
Abstract:: ... A number of polyphenol fractions were extracted from the brown alga Thalassiophyllum clathrus (Postels & Ruprecht, 1840) by the method of liquid–liquid extraction using solvents of increasing polarity, and their antioxidant activities were studied. The extract obtained with ethyl acetate was characterized by a maximum polyphenol content of 581.2 ± 8.4 mg/g equivalent to gallic acid and a maximum a ...
DOI:: 10.1134/S1063074021020048
: https://doi.org/10.1134/S1063074021020048

6. A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

Author:: Liubov Skrypnik; Olga Babich; Stanislav Sukhikh; Olga Shishko; Svetlana Ivanova; Oleg Mozhei; Ivan Kochish; Ilia Nikonov
Source:: Antioxidants 2021 v.10 no.7 pp. -
ISSN:: 2076-3921
Subject:: 2,2-diphenyl-1-picrylhydrazyl; absorption; activated carbon; adsorption; antioxidant activity; antioxidants; ascorbic acid; cytotoxicity; fossils; fullerene; heat treatment; oxidation; quercetin; water purification
Abstract:: ... This study reveals that fossil shungite samples exhibit antioxidant activity, can reduce oxidized components, and bind to free radicals. A sample of Sh20 (size fraction—20 μm) (1.30 mg equivalents of ascorbic acid/g of shungite; 3.46 mg equivalents of trolox/g of shungite; 0.99 mg equivalents of quercetin/g of shungite) had the maximal activity according to the amperometric method. The obtained da ...
DOI:: 10.3390/antiox10071121
: https://doi.org/10.3390/antiox10071121

7. A colon-specific delivery system for quercetin with enhanced cancer prevention based on co-axial electrospinning

Author:: Peng Wen; Teng-Gen Hu; Lin Li; Min-Hua Zong; Hong Wu
Source:: Food & function 2018 v.9 no.11 pp. 5999-6009
ISSN:: 2042-650X
Subject:: 2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; antioxidants; apoptosis; bioactive compounds; bioavailability; chitosan; colon; colorectal neoplasms; digestive system diseases; encapsulation; flow cytometry; fluorescence microscopy; galactooligosaccharides; human cell lines; interphase; nanoparticles; neoplasm cells; prebiotics; quercetin; sodium alginate; therapeutics
Abstract:: ... The antioxidant quercetin (Q) is a bioactive compound that can inhibit colon cancer. However, its poor stability in the upper gastro-intestinal tract and low bioavailability compromised its benefits. In this study, a biopolymer-based colon-specific delivery system for Q was constructed by co-axial electrospinning. Quercetin-loaded chitosan nanoparticles (QCNP) were firstly prepared and characteriz ...
DOI:: 10.1039/c8fo01216d
: https://doi.org/10.1039/c8fo01216d

8. A comparative study of phytochemicals, antioxidant potential and in-vitro DNA damage protection activity of different oat (Avena sativa) cultivars from India

Author:: Sukriti Singh; Maninder Kaur; Dalbir Singh Sogi; Sukhvinder Singh Purewal
Source:: Journal of food measurement & characterization 2019 v.13 no.1 pp. 347-356
ISSN:: 2193-4126
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Avena sativa; DNA; DNA damage; antioxidant activity; beta-glucans; bioactive compounds; catechin; coumarins; cultivars; free radical scavengers; free radicals; gallic acid; oats; plant breeders; proanthocyanidins; proteins; quercetin; saponins; India
Abstract:: ... Eight Indian oat cultivars collected from different areas were investigated for the presence of bioactive compounds, their antioxidant capacities and in-vitro DNA damage protection activity. Different assays were used for quantification of antioxidant activities in oat cultivars. Preliminary analysis revealed that all oat cultivars (cv.) were rich in specific phytochemicals as their extracts showe ...
DOI:: 10.1007/s11694-018-9950-x
: https://doi.org/10.1007/s11694-018-9950-x

9. A high production of flavonoids and anthraquinones via adventitious root culture of Oplopanax elatus and evaluating antioxidant activity

Author:: L. Han; X. C. Piao; J. Jiang; X. L. Jiang; C. R. Yin; M. L. Lian
Source:: Plant cell, tissue, and organ culture 2019 v.137 no.1 pp. 173-179
ISSN:: 0167-6857
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Oplopanax; additives; adventitious roots; antioxidant activity; bioactive compounds; electron paramagnetic resonance spectroscopy; elicitors; emodin; endangered species; inhibitory concentration 50; methyl jasmonate; plants (botany); quercetin; raw materials; spectrometers; tandem mass spectrometry
Abstract:: ... Adventitious root (AR) culturing is an effective approach for obtaining bioactive compounds from the endangered plant species of Oplopanax elatus Nakai. In the present study, flavonoids and anthraquinones, both important bioactive compounds were identified via HPLC-ESI–MS/MS, and flavonoid monomers of quercetin and kaempferide and anthraquinone monomers of aloe-emodin, rhein, and emodin were detec ...
DOI:: 10.1007/s11240-018-01543-w
: https://doi.org/10.1007/s11240-018-01543-w

10. A new estimation of the total flavonoids in silkworm cocoon sericin layer through aglycone determination by hydrolysis-assisted extraction and HPLC-DAD analysis

Author:: Jin-Ge Zhao; Yu-Qing Zhang
Source:: Food & nutrition research 2016 v.60 no.1 pp. 30932
ISSN:: 1654-661X
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Bombyx mori; antioxidant activity; cocoons; colorimetry; functional foods; glycemic effect; glycosides; glycosylation; high performance liquid chromatography; hydroxyl radicals; inhibitory concentration 50; kaempferol; oxidation; quercetin; sericin; silk; silkworms; sugars
Abstract:: ... Silk sericin and a few non-protein components isolated from the cocoon layer including two silk proteins in silkworm Bombyx mori has many bioactivities. The dietary sericin possess antinatural oxidation, anticancer, antihyperlipidemic, and antidiabetic activities. The non-protein components surrounding the sericin layer involve in wax, pigments mainly meaning flavonoids, sugars, and other impuriti ...
DOI:: 10.3402/fnr.v60.30932
: https://doi.org/10.3402/fnr.v60.30932

11. A new exploration of Dregea volubilis flowers: Focusing on antioxidant and antidiabetic properties

Author:: B. Das; A. De; M. Das; S. Das; A. Samanta
Source:: South African journal of botany 2017 v.109 pp. 16-24
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Apocynaceae; Fourier transform infrared spectroscopy; alpha-amylase; alpha-glucosidase; antioxidant activity; cinnamic acid; ellagic acid; ferulic acid; flowers; gallic acid; glycemic effect; hydroxyl radicals; hyperglycemia; inhibitory concentration 50; nitric oxide; pharmaceutical industry; quercetin; rutin; superoxide anion; ultra-performance liquid chromatography; vegetables; India
Abstract:: ... Flowers of Dregea volubilis (Family: Apocynaceae) are commonly consumed as seasonal vegetable in India but not yet evaluated for its health beneficiary effects. In the present study, the hydroalcoholic flower extract of D. volubilis (DVHA) was evaluated for antioxidant and antidiabetic activities in vitro. With high contents of phenolics (39.82±1.22mg GAE/g) and flavonoids (27.50±0.87mg QE/g), DVH ...
DOI:: 10.1016/j.sajb.2016.12.003
: https://doi.org/10.1016/j.sajb.2016.12.003

12. A new flavonoid glycoside and other chemical constituents from leaves of Rosa davurica and their antioxidant activity

Author:: Fenghua Ma; Toshihisa Onoda; Wei Li; Tatsunori Sasaki; Ling Ma; Qingbo Zhang; Kazuo Koike
Source:: Natural product research 2013 v.27 no.23 pp. 2178-2182
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Rosa davurica; antioxidant activity; chemical composition; ethanol; free radical scavengers; gallic acid; glycosides; leaves; quercetin; spectroscopy; structure-activity relationships; superoxide anion
Abstract:: ... A 70% ethanol extract from the leaves of Rosa davurica showed significant antioxidant activity in both superoxide anion and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical-scavenging assays. Phytochemical study of this extract resulted in the isolation of eight compounds, including a new flavonoid glycoside. The chemical structure was determined by various spectroscopic analyses. The isolated co ...
DOI:: 10.1080/14786419.2013.811408
: https://doi.org/10.1080/14786419.2013.811408

13. A new ultra-high pressure liquid chromatography method for the determination of antioxidant flavonol aglycones in six Lysimachia species

Author:: Anita Tóth; Krisztina Végh; Ágnes Alberti; Szabolcs Béni; Ágnes Kéry
Source:: Natural product research 2016 v.30 no.20 pp. 2372-2377
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Lysimachia clethroides; Lysimachia nummularia; acid hydrolysis; antioxidant activity; decolorization; free radical scavengers; kaempferol; liquid chromatography; methanol; myricetin; quantitative analysis; quercetin
Abstract:: ... UPLC-DAD method was developed and validated for the quantitative determination of free flavonol aglycones (kaempferol, quercetin and myricetin) after acidic hydrolysis in six Lysimachia species. Quantitative analyses showed that the amounts of various flavonol aglycones were significantly different in Lysimachia vulgaris , Lysimachia nummularia , Lysimachia punctata , Lysimachia christinae , Lysim ...
DOI:: 10.1080/14786419.2016.1174233
: https://doi.org/10.1080/14786419.2016.1174233

14. A synergic nanoantioxidant based on covalently modified halloysite–trolox nanotubes with intra-lumen loaded quercetin

Author:: Marina Massaro; Serena Riela; Susanna Guernelli; Filippo Parisi; Giuseppe Lazzara; Andrea Baschieri; Luca Valgimigli; Riccardo Amorati
Source:: Journal of materials chemistry B 2016 v.4 no.13 pp. 2229-2241
ISSN:: 2050-7518
Subject:: 2,2-diphenyl-1-picrylhydrazyl; acetonitrile; alpha-tocopherol; antioxidant activity; antioxidants; autoxidation; chemical bonding; chlorobenzene; free radicals; halloysite; nanotubes; quercetin; synergism
Abstract:: ... We describe the preparation and properties of the first example of a synergic nanoantioxidant, obtained by different functionalizations of the external surface and the inner lumen of halloysite nanotubes (HNTs). Trolox, a mimic of natural α-tocopherol, was selectively grafted on the HNT external surface; while quercetin, a natural polyphenolic antioxidant, was loaded into the inner lumen to afford ...
DOI:: 10.1039/c6tb00126b
: https://doi.org/10.1039/c6tb00126b

15. A synergistic combination of Phyllanthus emblica and Alpinia galanga against H2O2-induced oxidative stress and lipid peroxidation in human ECV304 cells

Author:: Chaisak Chansriniyom; Phichaporn Bunwatcharaphansakun; Waleewan Eaknai; Nonthaneth Nalinratana; Arkornnut Ratanawong; Mattaka Khongkow; Rataya Luechapudiporn
Source:: Journal of functional foods 2018 v.43 pp. 44-54
ISSN:: 1756-4646
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Alpinia galanga; Phyllanthus emblica; antioxidant activity; cell lines; cell viability; dose response; ellagic acid; endothelial cells; free radicals; fruits; humans; lipid peroxidation; oxidative stress; quercetin; rhizomes; superoxide anion
Abstract:: ... A combination of ethanolic extract of Phyllanthus emblica fruits and ethanolic extract of Alpinia galanga rhizomes at a ratio of 7:3 (PE–AE (7:3)) exhibited synergistic antioxidant activities against DPPH, ABTS+, and superoxide anion (O2−) radicals with Combination Indices (CIs) of 0.692 ± 0.048, 0.802 ± 0.033, and 0.840 ± 0.023, respectively. At concentrations of 20 and 50 µg/mL, the PE–AE (7:3) ...
DOI:: 10.1016/j.jff.2018.01.016
: https://doi.org/10.1016/j.jff.2018.01.016

16. Accumulation of ajmalicine and vinblastine in cell cultures is enhanced by endophytic fungi of Catharanthus roseus cv. Icy Pink

Author:: Nastaran Hemmati; Majid Azizi; Rosella Spina; François Dupire; Hossein Arouei; Mohsen Saeedi; Dominique Laurain-Mattar
Source:: Industrial crops and products 2020 v.158 pp. 112776
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Catharanthus roseus; Stemphylium; antioxidant activity; biomass; callus; callus culture; cancer therapy; culture filtrates; elicitors; endophytes; ethyl acetate; fungi; gallic acid; hypertension; polyphenols; quercetin; vinblastine
Abstract:: ... Catharanthus roseus belonging to the Apocynaceae family synthesizes indole alkaloids like vinblastine and ajmalicine which are used in cancer treatment and for decrease high blood pressure, respectively. However, these compounds with a high value added are accumulated at low level in the plants. For the first time, endophytic fungi isolated from leaves (Stemphylium amaranthi) and roots (Gliomastix ...
DOI:: 10.1016/j.indcrop.2020.112776
: https://doi.org/10.1016/j.indcrop.2020.112776

17. Acetylcholinesterase inhibitory and antioxidant properties of roots extracts from the Tunisian Scabiosa arenaria Forssk

Author:: Malek Besbes Hlila; Habib Mosbah; Kamel Mssada; Hichem Ben Jannet; Mahjoub Aouni; Boulbaba Selmi
Source:: Industrial crops and products 2015 v.67 pp. 62-69
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Scabiosa; acetylcholinesterase; active ingredients; antioxidant activity; beta-carotene; bleaching; butanol; colorimetry; gallic acid; myricetin; p-coumaric acid; quercetin; reversed-phase high performance liquid chromatography; roots
Abstract:: ... The total phenolic, flavonoid and tannin contents of Scabiosa arenaria Forssk roots were determined by colorimetry. The in vitro antioxidant activity was characterized by varied assays like 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azinobis 3-ethylbenzothiazoline-6-sulfonic acid (ABTS), reducing power and β-carotene bleaching inhibition activity. The anti-acetylcholinesterase activity was also eva ...
DOI:: 10.1016/j.indcrop.2015.01.009
: https://doi.org/10.1016/j.indcrop.2015.01.009

18. Achyranthes aspera Linn. alleviates cerebral ischemia-reperfusion-induced neurocognitive, biochemical, morphological and histological alterations in Wistar rats

Author:: Gollapalle Lakshminarayanashastry Viswanatha; Marikunte V. Venkataranganna; Nunna Bheema Lingeswara Prasad; Hanumanthappa Shylaja
Source:: Journal of ethnopharmacology 2019 v.228 pp. 58-69
ISSN:: 0378-8741
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Achyranthes aspera; aerial parts; antioxidants; apigenin; brain; brain damage; carboxymethylcellulose; catalase; cell lines; cognition; edema; enzyme activity; epilepsy; gallic acid; glucose; glutathione; histology; histopathology; infarction; ingredients; inhibitory concentration 50; interleukin-10; interleukin-6; ischemia; laboratory animals; leukocytes; lipid peroxidation; liquid chromatography; males; methanol; nitrites; oral administration; oxygen radical absorbance capacity; quercetin; rats; reference standards; roots; stroke; superoxide dismutase; tandem mass spectrometry; traditional medicine; tumor necrosis factor-alpha
Abstract:: ... In the traditional system of Indian medicine, the whole plant and roots of Achyranthes aspera L have been extensively used to treat neurological conditions such as epilepsy and stroke by the various ethnic communities of India.The present study was aimed to evaluate the cerebroprotective potential of methanol extract of A. aspera aerial parts (MeAA).Initially the MeAA was evaluated for total pheno ...
DOI:: 10.1016/j.jep.2018.09.018
: https://doi.org/10.1016/j.jep.2018.09.018

19. Active Volatile Constituents in Perilla frutescens Essential Oils and Improvement of Antimicrobial and Anti-Inflammatory Bioactivity by Fractionation

Author:: Li-Yun Lin; Chiung-Chi Peng; Hui-Er Wang; Yen-Wei Liu; Kun-Hung Shen; Kuan-Chou Chen; Robert Y. Peng
Source:: Journal of essential oil-bearing plants 2016 v.19 no.8 pp. 1957-1983
ISSN:: 0976-5026
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Escherichia coli; Perilla frutescens; aldehydes; anti-inflammatory activity; antibacterial properties; cultivars; cytotoxicity; essential oils; fractionation; hydrogen peroxide; iron; leaves; limonene; linalool; lutein; pentane; phytopharmaceuticals; quercetin; rutin; superoxide anion; tumor necrosis factor-alpha; China; Japan
Abstract:: ... Perilla frutescens (L.) Britt Labiatae (Pl), known as “Zi-So” and widely grown in China (red cultivar, Rpl) and Japan (green cultivar, Gpl), is frequently served on “Sa-Shi-Mi” dishes. Considering whether the perilla leaves substantially possess antimicrobial activity, we prepared the essential oils (EO: EOr and EOg), the pentane and ether [E: E(rp) and E(gp)] subfractions, the aqueous [Rpl(w) and ...
DOI:: 10.1080/0972060X.2016.1226962
: https://doi.org/10.1080/0972060X.2016.1226962

20. Activity profiling of Serbian and some other European Merlot wines in inflammation and oxidation processes

Author:: Tatjana M. Majkić; Ljilja D. Torović; Marija M. Lesjak; Dragana D. Četojević-Simin; Ivana N. Beara
Source:: Food research international 2019 v.121 pp. 151-160
ISSN:: 0963-9969
Subject:: 2,2-diphenyl-1-picrylhydrazyl; anthocyanins; antioxidant activity; antioxidants; cardiovascular diseases; catechin; gallic acid; health promotion; in vitro studies; inflammation; lipid peroxidation; nitric oxide; oxidation; p-coumaric acid; quercetin; red wines; resveratrol; rutin
Abstract:: ... Merlot are worldwide recognized red wines. Several studies show that red wines have health benefits, mainly due to their phenolic constituents. This study evaluates twelve Serbian and other five European (French, Italian, Macedonian, Slovenian, Spanish) Merlot wines in respect of their phenolic composition and biological activity. The latter was evaluated through a set of in vitro experiments rela ...
DOI:: 10.1016/j.foodres.2019.03.033
: https://doi.org/10.1016/j.foodres.2019.03.033

21. Acylated flavonol glycosides from the flower of Elaeagnus angustifolia L.

Author:: Sarah Bendaikha; Méredith Gadaut; Dominique Harakat; Alabdul Magid
Source:: Phytochemistry 2014 v.103 pp. 129-136
ISSN:: 0031-9422
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Elaeagnus angustifolia; antioxidants; ascorbic acid; flowers; glycosides; kojic acid; nuclear magnetic resonance spectroscopy; quercetin
Abstract:: ... Seven acylated flavonol glycosides named elaeagnosides A–G, in addition to seven known flavonoids were isolated from the flowers of Elaeagnus angustifolia. Their structures were elucidated by different spectroscopic methods including 1D, 2D NMR experiments and HR-ESI-MS analysis. In order to identify natural antioxidant and tyrosinase inhibitor agents, the abilities of these flavonoids to scavenge ...
DOI:: 10.1016/j.phytochem.2014.03.025
: https://doi.org/10.1016/j.phytochem.2014.03.025

22. Adsorption and Recovery of Polyphenolic Flavonoids Using TiO2-Functionalized Mesoporous Silica Nanoparticles

Author:: Khan M. Arif; Wallace William T.; Islam Syed Z.; Nagpure Suraj; Strzalka Joseph; Littleton John M.; Rankin Stephen E.; Knutson Barbara L.
Source:: ACS applied materials & interfaces 2017 v.9 no.37 pp. 32114-32125
ISSN:: 1944-8252
Subject:: 2,2-diphenyl-1-picrylhydrazyl; X-radiation; adsorbents; adsorption; antioxidant activity; citric acid; ethanol; ligands; nanoparticles; nitrogen; porous media; quercetin; rutin; silica; sorption isotherms; surface area; synthesis; titanium dioxide; transmission electron microscopy
Abstract:: ... Exploiting specific interactions with titania (TiO₂) has been proposed for the separation and recovery of a broad range of biomolecules and natural products, including therapeutic polyphenolic flavonoids which are susceptible to degradation, such as quercetin. Functionalizing mesoporous silica with TiO₂ has many potential advantages over bulk and mesoporous TiO₂ as an adsorbent for natural product ...
DOI:: 10.1021/acsami.7b09510
: https://doi.org/10.1021/acsami.7b09510

23. Adventitious root cultures from leaf explants of Helicteres angustifolia L. as a novel source for production of natural bioactive compounds

Author:: Xi Yang; Jingtong Zhang; Zhongfang Lei; Xuefei Yan; Xuansheng Hu; Delin Cheng; Zhenya Zhang
Source:: Acta physiologiae plantarum 2019 v.41 no.10 pp. 171
ISSN:: 0137-5881
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Helicteres; adventitious roots; alpha-glucosidase; antioxidant activity; ascorbic acid; bioactive compounds; caffeic acid; catechol; dose response; explants; functional foods; gallic acid; inhibitory concentration 50; intestines; leaves; naphthaleneacetic acid; quercetin; rats; root extracts; secondary metabolites; sucrose alpha-glucosidase; wild plants
Abstract:: ... In this study, adventitious roots of Helicteres angustifolia L. (H. angustifolia) were generated on Murashige and Skoog salt mixture (MS) medium with auxin and ascorbic acid as additives. The root initiation ratio reached 100% on MS medium supplemented with 3.0 mg/L NAA and 0.4 mg/L ascorbic acid at 28 °C. The root number reached 15 ± 2 per leaf explant with a length of 1.70 ± 0.52 cm. Moreover, t ...
DOI:: 10.1007/s11738-019-2964-0
: https://doi.org/10.1007/s11738-019-2964-0

24. Agrobacterium rhizogenes mediated transformation of Ficus carica L. for the efficient production of secondary metabolites

Author:: Shahla Amani; Mehdi Mohebodini; Shahram Khademvatan; Morad Jafari
Source:: Journal of the science of food and agriculture 2020 v.100 no.5 pp. 2185-2197
ISSN:: 0022-5142
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Ficus carica; Rhizobium rhizogenes; antineoplastic activity; antioxidant activity; antioxidants; apigenin; caffeic acid; chlorogenic acid; cinnamic acid; essential oils; gallic acid; gas chromatography-mass spectrometry; leaves; methyl jasmonate; monoterpenoids; phenol; quercetin; rosmarinic acid; rutin; secondary metabolites; shoots; thymol
Abstract:: ... BACKGROUND: Ficus carica L., an ancient source of food and medicines, is rich in valuable nutritional and secondary compounds with antioxidant, antimicrobial, and anticancer effects. The present study is the first attempt to examine hairy root (HR) induction of F. carica (Sabz and Siah) by inoculating the 3‐week‐old shoots and leaves with different strains of Agrobacterium rhizogenes and also to i ...
DOI:: 10.1002/jsfa.10243
: https://doi.org/10.1002/jsfa.10243

25. An automatic on-line 2,2-diphenyl-1-picrylhydrazyl-high performance liquid chromatography method for high-throughput screening of antioxidants from natural products

Author:: Yanzhen Lu; Nan Wu; Yingtong Fang; Nusrat Shaheen; Yun Wei
Source:: Journal of chromatography 2017 pp. -
ISSN:: 0021-9673
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Coptis chinensis; Malus pumila; Saccharum officinarum; antioxidant activity; antioxidants; benzoic acid; berberine; breast neoplasms; countercurrent chromatography; diabetes; ferulic acid; isoquercitrin; leaves; mass spectrometry; p-coumaric acid; phloridzin; powders; quercetin; quercitrin; screening
Abstract:: ... Many natural products are rich in antioxidants which play an important role in preventing or postponing a variety of diseases, such as cardiovascular and inflammatory disease, diabetes as well as breast cancer. In this paper, an automatic on-line 2,2-diphenyl-1-picrylhydrazyl-high performance liquid chromatography (DPPH-HPLC) method was established for antioxidants screening with nine standards in ...
DOI:: 10.1016/j.chroma.2017.09.030
: https://doi.org/10.1016/j.chroma.2017.09.030

26. Analysis of flavonoid content, antioxidant, antimicrobial and antibiofilm activity of in vitro hairy root extract of radish (Raphanus sativus L.)

Author:: Balasubramanian Muthusamy; Girija Shanmugam
Source:: Plant cell, tissue, and organ culture 2020 v.140 no.3 pp. 619-633
ISSN:: 0167-6857
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Gram-positive bacteria; Pseudomonas aeruginosa; Raphanus raphanistrum; Raphanus sativus; Rhizobium rhizogenes; absorbance; acetosyringone; anti-infective agents; antimicrobial properties; antioxidant activity; biofilm; biomass production; explants; food contamination; genes; industrial applications; leaves; mass spectrometry; plasmids; polymerase chain reaction; quercetin; radishes; root extracts; roots; spoilage; sucrose; transfer DNA
Abstract:: ... The production of biofilm inhibiting antimicrobial agents of plant origin is gaining significant importance in recent years. The inhibition of biofilm by natural agents is considered safe and provides greater scope for alternative antimicrobial strategies. The hairy root culture extracts established by infecting leaf explants with Agrobacterium rhizogenes R1000 and A4 strains in Raphanus raphanist ...
DOI:: 10.1007/s11240-019-01757-6
: https://doi.org/10.1007/s11240-019-01757-6

27. Analysis of rhizome colour content, bioactive compound profiling and ex-situ conservation of turmeric genotypes (Curcuma longa L.) from sub-Himalayan terai region of India

Author:: Kumaresh Pal; Sayan Chowdhury; Sudip Kumar Dutta; Soumendra Chakraborty; Moumita Chakraborty; Goutam Kumar Pandit; Suchand Dutta; Prodyut Kumar Paul; Ashok Choudhury; Biswajit Majumder; Nandita Sahana; Somnath Mandal
Source:: Industrial crops and products 2020 v.150 pp. 112401
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Curcuma longa; antioxidant activity; bioactive compounds; catechin; cineole; color; essential oils; ex situ conservation; explants; gas chromatography-mass spectrometry; genotype; iron; medicinal properties; micropropagation; naphthaleneacetic acid; p-coumaric acid; quercetin; rhizomes; sinapic acid; turmeric; volatile compounds; India
Abstract:: ... Turmeric (Curcuma longa L.), the golden spice of India, offers a myriad of health benefits primarily due to the presence of polyphenolic curcuminoid pigments. It is believed that the dark orange colour of turmeric rhizome has wide-spread health benefits; but no reliable evidential proof for this is available till date. It is crucial to discern the association of rhizome colour with health benefits ...
DOI:: 10.1016/j.indcrop.2020.112401
: https://doi.org/10.1016/j.indcrop.2020.112401

28. Analytical evaluation of phenolic compounds and minerals of Opuntia robusta J.C. Wendl. and Opuntia ficus-barbarica A. Berger

Author:: Şeyda Kıvrak; İbrahim Kıvrak; Erşan Karababa
Source:: International journal of food properties 2018 v.21 no.1 pp. 229-241
ISSN:: 1094-2912
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Opuntia ficus-indica; Opuntia robusta; acetylcholinesterase; antioxidant activity; butylated hydroxyanisole; butylated hydroxytoluene; calcium; cholinesterase; detection limit; electrospray ionization mass spectrometry; ethyl acetate; ferulic acid; fruits; hexane; inhibitory concentration 50; methanol; mineral content; minerals; monitoring; potassium; pyrocatechol; quercetin; spectrometers; standard deviation; tandem mass spectrometry; ultra-performance liquid chromatography
Abstract:: ... In this study, 19 phenolic compounds were detected using high-throughput instrument ultra performance liquid chromatography with electrospray ionization tandem mass spectrometry (UPLC–ESI–MS/MS) in Opuntia ficus-barbarica A. Berger and Opuntia robusta J.C. Wendl. fruits. The five macro- and five micro-minerals determined in both species were analyzed using inductively coupled plasma–mass spectrome ...
DOI:: 10.1080/10942912.2018.1451342
: https://doi.org/10.1080/10942912.2018.1451342

29. Anatomical structure, flavonoid content, and antioxidant activity of Rhodomyrtus tomentosa leaves and fruits on different age and maturity level

Author:: evi kuntorini; LAURENTIUS HARTANTO NUGROHO; MARYANI; TRI RINI NURINGTYAS
Source:: Biodiversitas 2019 v.20 no.12 pp. -
ISSN:: 2085-4722
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Rhodomyrtus tomentosa; analgesics; antioxidant activity; colic; diarrhea; endocarp; exocarp; fruit maturity; indigenous species; inhibitory concentration 50; leaf epidermis; medicinal plants; mesocarp; mesophyll; oils; quercetin; trichomes
Abstract:: ... Kuntorini EM, Nugroho LH, Maryani, Nuringtyas TR. 2019. Anatomical structure, flavonoid content, and antioxidant activity of Rhodomyrtus tomentosa leaves and fruits on different age and maturity level. Biodiversitas 20: 3619-3625. Karamunting (Rhodomyrtus tomentosa (Aiton.) Hassk.) is a native plant to southeast Asian countries, and is a well-known medicinal plant used to treat colic diarrhea, wou ...
DOI:: 10.13057/biodiv/d201221
: https://doi.org/10.13057/biodiv/d201221

30. Angkorensides A and B – Two anti-inflammatory acyl glycosides from Gardenia angkorensis

Author:: Vu Dinh Hoang; Nguyen Khac Hung; Le Dang Quang; Tran Thi Minh; Ta Ngoc Dung; Pham Quang Duong; Nguyen Huu Tung; Dinh Thi Phuong Anh; Nguyen Thi Thuy My; Nguyen Quang Tung; Tran Dinh Thang; Dang Ngoc Quang
Source:: Phytochemistry letters 2022 v.49 pp. 211-214
ISSN:: 1874-3900
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Gardenia; glycosides; lipopolysaccharides; macrophages; proanthocyanidins; quercetin
Abstract:: ... Two new acyl glycosides, angkorensides A and B (1 and 2) together with twelve known compounds including hedyotol C 7″-O-β-D-glucopyranoside (3), proanthocyanidin A-1 (4), (-)-epicatechin (5), (+)-lyoniresinol 3α-O-β-D-glucopyranoside (6), kaempferol-3-O-β-D-galactopyranoside (7), cuneataside E (8), 4-hydroxyacetophenone 4-O-(6′-O-β-D-apiofuranosyl)-β-D-glucopyranoside (9), cinnamtannin B-1 (10), a ...
DOI:: 10.1016/j.phytol.2022.04.007
: https://doi.org/10.1016/j.phytol.2022.04.007

31. Antagonistic interaction of phenols and alkaloids in Sichuan pepper (Zanthoxylum bungeanum) pericarp

Author:: Xiaoxia Sun; Di Zhang; Lei Zhao; Bolin Shi; Jianbo Xiao; Xuhao Liu; Marcillinus Zekruman; Yuqian Hu; Auriol Ngouana; Jiyong Shi; Xiaobo Zou
Source:: Industrial crops and products 2020 v.152 pp. 112551
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Zanthoxylum bungeanum; alkaloids; antioxidant activity; antioxidants; electron paramagnetic resonance spectroscopy; inhibitory concentration 50; medicinal plants; peppers; pericarp; phenol; quercetin; rutin; species diversity; spices; voltammetry; China
Abstract:: ... The pericarp of Zanthoxylum bungeanum (PZB) is rich in phenols and alkaloids as a potential source of antioxidants, also known as Huajiao or Sichuan pepper in China, and is not only extensively used as a pungent culinary spice but also as a traditional medicinal plant due to its remedial properties. Previous studies have shown that PZB extract is highly effective against oxidative stress-related d ...
DOI:: 10.1016/j.indcrop.2020.112551
: https://doi.org/10.1016/j.indcrop.2020.112551

32. Anthemis chia: Biological capacity and phytochemistry

Author:: Cengiz Sarikurkcu
Source:: Industrial crops and products 2020 v.153 pp. 112578
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Anthemis; Salvia hispanica; acarbose; alpha-amylase; antioxidant activity; antioxidants; apigenin; caffeic acid; chlorogenic acid; cosmetics; electrospray ionization mass spectrometry; enzyme inhibition; enzyme inhibitors; ethyl acetate; flowers; gallic acid; hypoglycemic agents; iron; kojic acid; liquid chromatography; luteolin; methanol; pharmaceutical industry; protocatechuic acid; quercetin; sulfonic acids; tandem mass spectrometry
Abstract:: ... Anthemis species are also of great importance in the cosmetics and pharmaceutical industries. In this study, phytochemical compositions, antioxidant and enzyme inhibitory activities of ethyl acetate (EtOAc), methanol (MeOH) and water extracts obtained from Anthemis chia L. flowers were investigated. The total phenolic and flavonoid compound analysis revealed that the richest one in terms of these ...
DOI:: 10.1016/j.indcrop.2020.112578
: https://doi.org/10.1016/j.indcrop.2020.112578

33. Anti-glycating and anti-oxidant compounds from traditionally used anti-diabetic plant Geigeria alata(DC) Oliv. & Hiern.

Author:: Eltayeb Fadul; Arsalan Nizamani; Saima Rasheed; Achyut Adhikari; Sammer Yousuf; Shahida Parveen; Nezhun Gören; Hassan A. Alhazmi; M. Iqbal Choudhary; Asaad Khalid
Source:: Natural product research 2020 v.34 no.17 pp. 2456-2464
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Geigeria; X-ray diffraction; antioxidant activity; carbon; diabetes; inhibitory concentration 50; lactones; mass spectrometry; nuclear magnetic resonance spectroscopy; quercetin; rutin; sesquiterpenoids; stable isotopes; superoxide anion
Abstract:: ... A new sesquiterpene lactone geigerianoloide (1) and four known flavonoids axillarin (2), quercetin (3), 3-methoxy-5,7,3',4'-tetrahydroxy-flavone (4) and hispidulin (5) were isolated from Geigeria alata (DC) Oliv. & Hiern. (Asteraceae). Structures were deduced using ¹H- and ¹³C- NMR spectroscopy, mass spectrometry, while the structure of compound 1 was also deduced using X-ray crystallography techn ...
DOI:: 10.1080/14786419.2018.1542388
: https://doi.org/10.1080/14786419.2018.1542388

34. Anti-inflammatory and antioxidant properties of leaf extracts of eleven South African medicinal plants used traditionally to treat inflammation

Author:: Moise Ondua; Emmanuel Mfotie Njoya; Muna Ali Abdalla; Lyndy J. McGaw
Source:: Journal of ethnopharmacology 2019 v.234 pp. 27-35
ISSN:: 0378-8741
Subject:: anti-inflammatory activity; lipopolysaccharides; 2,2-diphenyl-1-picrylhydrazyl; medicinal plants; acetone; inhibitory concentration 50; Ficus elastica; Carpobrotus edulis; macrophages; hexane; ethyl acetate; enzyme inhibition; traditional medicine; Cotyledon orbiculata; linoleate 13S-lipoxygenase; Typha; mice; antioxidant activity; ethanol; antioxidants; quercetin; leaf extracts; fractionation; methanol; nitric oxide; inflammation
Abstract:: ... Inflammation is a complex mechanism employed by the body to promote healing and restoration to normal function in the event of injury. Eleven plant species were selected in this study based on their use in traditional medicine against inflammation in South Africa.Hexane, acetone, ethanol, methanol and water extracts of the powdered plants were prepared and a total of fifty-five extracts were teste ...
DOI:: 10.1016/j.jep.2018.12.030
: https://doi.org/10.1016/j.jep.2018.12.030

35. Anti-inflammatory potential of South African medicinal plants used for the treatment of sexually transmitted infections

Author:: F. Lawal; M.J. Bapela; S.A. Adebayo; S.M. Nkadimeng; A.A. Yusuf; K.E. Malterud; L.J. McGaw; T.E. Tshikalange
Source:: South African journal of botany 2019 v.125 pp. 62-71
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Ficus abutilifolia; Lannea; Zanthoxylum capense; acetone; anti-inflammatory activity; antioxidant activity; arachidonate 15-lipoxygenase; ascorbic acid; bark; cytotoxicity; enzyme inhibition; free radicals; gas chromatography-mass spectrometry; inflammation; inhibitory concentration 50; lipopolysaccharides; macrophages; medicinal plants; nitric oxide; nuclear magnetic resonance spectroscopy; proanthocyanidins; quercetin; secondary metabolites; sexually transmitted diseases; traditional medicine; xanthine oxidase
Abstract:: ... Inflammation associated with sexually transmitted infection (STIs) often results from delayed diagnosis or treatment, and may result in life-threatening complications. The root or stem bark of plants selected in this study are used by traditional healers in the management of STIs and to treat the associated inflammation. This study evaluated the anti-inflammatory activities of 12 South African med ...
DOI:: 10.1016/j.sajb.2019.06.023
: https://doi.org/10.1016/j.sajb.2019.06.023

36. Anti-melanogenic and anti-oxidant activities of ethanol extract of Kummerowia striata: Kummerowia striata regulate anti-melanogenic activity through down-regulation of TRP-1, TRP-2 and MITF expression

Author:: Jae Yeon Lee; Young-Rak Cho; Ju Hyoung Park; Eun-Kyung Ahn; Wonsik Jeong; Hyoung Seok Shin; Mi-Sun Kim; Seung Hwan Yang; Joa Sub Oh
Source:: Toxicology reports 2019 v.6 pp. 10-17
ISSN:: 2214-7500
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Kummerowia striata; antioxidants; cell culture; cell viability; cytotoxicity; dose response; ethanol; mechanism of action; melanin; melanoma; p-coumaric acid; protein synthesis; quercetin; therapeutics; toxicology; traditional medicine; transcription factors
Abstract:: ... Kummerowia striata (K. striata) is used as a traditional medicine for inflammation-related therapy. To determine whether it has beneficial anti-melanogenic and anti-oxidant activities, we investigated the biological activities of the ethanol extract of Kummerowia striata (EKS) using a variety of in vitro and cell culture model systems. The anti-melanogenic activity was assessed in B16F10 melanoma ...
DOI:: 10.1016/j.toxrep.2018.11.005
: https://doi.org/10.1016/j.toxrep.2018.11.005

37. Anti-obesity and antioxidant activities of selected medicinal plants and phytochemical profiling of bioactive compounds

Author:: Hafeedza Abdul Rahman; Nazamid Saari; Faridah Abas; Amin Ismail; Muhammad Waseem Mumtaz; Azizah Abdul Hamid
Source:: International journal of food properties 2017 v.20 no.11 pp. 2616-2629
ISSN:: 1094-2912
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Andrographis paniculata; Carica papaya; Cosmos caudatus; Lawsonia inermis; Melicope; Pereskia; Piper betle; Pluchea; antioxidant activity; bioactive compounds; catechin; functional foods; glucose; glucosides; herbs; inhibitory concentration 50; medicinal plants; metabolites; obesity; procyanidins; quercetin; quinic acid; screening; solvents; triacylglycerol lipase
Abstract:: ... The present study describes the screening of eight herbs namely Cosmos caudatus, Pluchea indica, Lawsonia inermis, Carica papaya, Piper betle, Andrographis paniculata, Pereskia bleo , and Melicope lunu based on their anti-obesity and antioxidant activities. Out of all tested herbs, Cosmos caudatus demonstrated excellent anti-obesity and antioxidant potential with pancreatic lipase inhibitory effec ...
DOI:: 10.1080/10942912.2016.1247098
: https://doi.org/10.1080/10942912.2016.1247098

38. Anti-obesity potential of corn silks: Relationships of phytochemicals and antioxidation, anti-pre-adipocyte proliferation, anti-adipogenesis, and lipolysis induction

Author:: Rungsiri Chaiittianan; Pimchanit Chayopas; Ariya Rattanathongkom; Patcharaporn Tippayawat; Khaetthareeya Sutthanut
Source:: Journal of functional foods 2016 v.23 pp. 497-510
ISSN:: 1756-4646
Subject:: 2,2-diphenyl-1-picrylhydrazyl; adipocytes; antioxidant activity; cultivars; ferulic acid; gallic acid; glucosides; high performance liquid chromatography; ingredients; lipolysis; p-coumaric acid; phytopharmaceuticals; quercetin; styles (flowers); waxy corn
Abstract:: ... The 50% ethanolic corn silk extracts (CSEs) derived from sweet (SP and SV) and waxy corn silk (KJ and KT) cultivars were investigated for their phytochemical compositions using HPLC-UV method, antioxidation using FRAP and DPPH assays and anti-obesity potential in 3T3-L1 adipocyte. Different major compositions among CSEs were manifested: flavonoids as quercetin glucoside derivatives and phenolics a ...
DOI:: 10.1016/j.jff.2016.03.010
: https://doi.org/10.1016/j.jff.2016.03.010

39. Anti-proliferative, in vitro antioxidant, and cellular antioxidant activities of the leaf extracts from Polygonum minus Huds: Effects of solvent polarity

Author:: Mohamad Zakkirun Abdullah; Johari Mohd Ali; Mitra Abolmaesoomi; Puteri Shafinaz Abdul-Rahman; Onn Haji Hashim
Source:: International journal of food properties 2017 v.20 no.sup1 pp. 846-862
ISSN:: 1094-2912
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Persicaria minor; antioxidant activity; cytotoxicity; ethyl acetate; functional foods; hexane; industry; inhibitory concentration 50; leaf extracts; liquid chromatography; mass spectrometry; median effective concentration; methanol; neoplasms; nitric oxide; oxidation; phytopharmaceuticals; quercetin; quercitrin; solvents; superoxide anion; tannins; therapeutics
Abstract:: ... The present study reports the antioxidant and anti-proliferative activities of Polygonum minus leaf extracts obtained through sequential extraction using four solvents of varying polarities (i.e. hexane (HX), ethyl acetate (EA), methanol, and water). The antioxidant potential was evaluated by measuring the total phenolic content (TPC), total flavonoid content (TFC), ferric reducing antioxidant pow ...
DOI:: 10.1080/10942912.2017.1315591
: https://doi.org/10.1080/10942912.2017.1315591

40. Anti-radical flavonol glycosides from the aerial parts of Cleome chelidonii L.f.

Author:: Phuc-Dam Nguyen; Charlotte Sayagh; Nicolas Borie; Catherine Lavaud
Source:: Phytochemistry 2017 v.142 pp. 30-37
ISSN:: 0031-9422
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Cleome; acetates; aerial parts; esterification; glucose; glycosides; kaempferol; nuclear magnetic resonance spectroscopy; quercetin; rhamnose
Abstract:: ... Eleven previously undescribed flavonoid glycosides, named cleomesides C-M, along with five known compounds, were isolated from the aerial parts of Cleome chelidonii L.f. (Cleomaceae). All flavonol glycosides were esterified derivatives of 3,7-O-diglycosides of quercetin or kaempferol. Their structures were elucidated by analysis of the 1D and 2D NMR spectra, HR-ESI-MS data, UV spectra, optical rot ...
DOI:: 10.1016/j.phytochem.2017.06.012
: https://doi.org/10.1016/j.phytochem.2017.06.012

41. Antiacanthamoebic properties of natural and marketed honey in Pakistan

Author:: Farzana Abubakar Yousuf; Malik Hassan Mehmood; Abdul Malik; Ruqaiyyah Siddiqui; Naveed Ahmed Khan
Source:: Asian Pacific Journal of Tropical Biomedicine 2016 v.6 pp. 967-972
ISSN:: 2221-1691
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Acanthamoeba castellanii; antioxidant activity; beehives; culture media; gallic acid; honey; markets; quercetin; viability; Pakistan
Abstract:: ... To determine antiacanthamoebic activity of natural and marketed honey samples.Natural honey samples were collected directly from the bee hive and marketed honey samples were purchased from the local market in Karachi, Pakistan. Both honey samples were tested for their flavonoid content (quercetin equivalent per gram of the extract) and phenolic content (gallic acid equivalent per gram). Furthermor ...
DOI:: 10.1016/j.apjtb.2016.05.010
: https://doi.org/10.1016/j.apjtb.2016.05.010

42. Antibiofilm, antiproliferative, antioxidant and antimutagenic activities of an endophytic fungus Aspergillus fumigatus from Moringa oleifera

Author:: Navdeep Kaur; Daljit Singh Arora; Namarta Kalia; Manpreet Kaur
Source:: Molecular biology reports 2020 v.47 no.4 pp. 2901-2911
ISSN:: 0301-4851
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Aspergillus fumigatus; Moringa oleifera; antimicrobial properties; antioxidant activity; antioxidants; caffeic acid; carcinogenicity; ellagic acid; endophytes; fungi; kaempferol; molecular biology; mutagens; neoplasm cells; quercetin; rutin; ultra-performance liquid chromatography
Abstract:: ... An endophytic fungus Aspergillus fumigatus isolated from Moringa oleifera has been evaluated for its various bioactivities. The chloroformic fungal extract exhibited a good antimicrobial as well as antibiofilm activity against various pathogenic microorganisms. It also demonstrated a good antimutagenicity against the reactive carcinogenic ester generating mutagen, 2-aminofluorene (2-AF) with IC₅₀ ...
DOI:: 10.1007/s11033-020-05394-7
: https://doi.org/10.1007/s11033-020-05394-7

43. Antibiofilm, antiquorum sensing and antioxidant activity of secondary metabolites from seeds of Annona senegalensis, Persoon

Author:: Alfred Ngenge Tamfu; Ozgur Ceylan; Godloves Chi Fru; Mehmet Ozturk; Mehmet Emin Duru; Farzana Shaheen
Source:: Microbial pathogenesis 2020 v.144 pp. 104191
ISSN:: 0882-4010
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Annona senegalensis; Candida albicans; Escherichia coli; Staphylococcus aureus; antibiotics; antimicrobial properties; antioxidant activity; antioxidants; bacteria; bacterial motility; biofilm; cell communication; chelation; chromatography; dose response; inhibitory concentration 50; minimum inhibitory concentration; quercetin; quorum sensing; secondary metabolites; seed extracts; seeds; violacein; yeasts
Abstract:: ... The increasing resistance of bacteria to antibiotics has motivated the interest in potent natural compounds capable of disrupting bacterial cell-to-cell communication. Column chromatography of seed extract of Annona senegalensis afforded N-cerotoyltryptamine (1), asimicin (2) and ent-19-carbomethoxykauran-17-oic acid (3). The compounds were tested for their antimicrobial, antibiofilm, and anti-quo ...
DOI:: 10.1016/j.micpath.2020.104191
: https://doi.org/10.1016/j.micpath.2020.104191

44. Antidiabetic effects of Syzygium cumini leaves: A non-hemolytic plant with potential against process of oxidation, glycation, inflammation and digestive enzymes catalysis

Author:: Rodrigo Rodrigues Franco; Luiz Fernando Ribeiro Zabisky; Joed Pires de Lima Júnior; Victor Hugo Mota Alves; Allisson Benatti Justino; André Lopes Saraiva; Luiz Ricardo Goulart; Foued Salmen Espindola
Source:: Journal of ethnopharmacology 2020 v.261 pp. 113132
ISSN:: 0378-8741
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Syzygium cumini; alpha-amylase; alpha-glucosidase; antioxidant activity; antioxidants; arginine; bioactive compounds; butanol; carboxylic ester hydrolases; catalytic activity; cytotoxicity; diabetes mellitus; enzyme inhibition; erythrocytes; ethyl acetate; fructose; glycation; glycemic effect; hexane; hyperglycemia; hyperlipidemia; inflammation; inhibitory concentration 50; kaempferol; leaves; luteolin; methylene chloride; models; oxidation; oxidative stress; quercetin; traditional medicine
Abstract:: ... Plant materials are commonly used in traditional medicine in order to treat various diseases such as Diabetes mellitus. Some plants, such as Syzygium cumini, have the capability to act controlling oxidative stress and protein glycation besides their potential to decrease hyperglycemia and hyperlipidemia by the inhibition of the catalysis of digestive enzymes. The aim of this study was to evaluate ...
DOI:: 10.1016/j.jep.2020.113132
: https://doi.org/10.1016/j.jep.2020.113132

45. Antifungal activity of mango kernel polyphenols on mango fruit infected by anthracnose

Author:: Deysi Gómez-Maldonado; Consuelo Lobato-Calleros; Eleazar Aguirre-Mandujano; S. Gerardo Leyva-Mir; Leticia Robles-Yerena; E. Jaime Vernon-Carter
Source:: Lebensmittel-Wissenschaft + Technologie 2020 v.126 pp. 109337
ISSN:: 0023-6438
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Colletotrichum; anthracnose; antifungal properties; antioxidant activity; aqueous solutions; caffeic acid; chlorogenic acid; ferulic acid; fruits; fungicides; gallic acid; in vitro studies; mangoes; mycelium; myricetin; polyphenols; quercetin; rutin; seeds; sonication; spore germination; spores; thiabendazole; ultrasonics
Abstract:: ... Mango cv. Manila kernel ethanolic extract (MKE) was assessed in vitro and in mango cv. Ataulfo fruits for antifungal activity against Colletotrichum brevisporum. An optimum MKE with a total phenolic content of 461.7 mg gallic acid equivalents/g and DPPH• antioxidant activity of 2919.0 μmol Trolox equivalents/g was obtained by applying high intensity ultrasound, using a solid/liquid of 1/20 g/mL an ...
DOI:: 10.1016/j.lwt.2020.109337
: https://doi.org/10.1016/j.lwt.2020.109337

46. Antileishmanial and antioxidant potential of fractions and isolated compounds from Nectandra cuspidata

Author:: Lilian dos Anjos Oliveira Ferreira; Mariana Maciel de Oliveira; Flávia Lais Faleiro; Débora Botura Scariot; Joana Schuelter Boeing; Jesuí Vergílio Visentainer; Mariza Barion Romagnolo; Celso Vataru Nakamura; Maria da Conceição Torrado Truiti
Source:: Natural product research 2018 v.32 no.23 pp. 2825-2828
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Leishmania amazonensis; Nectandra; antioxidant activity; butylated hydroxytoluene; cytotoxicity; epicatechin; ethyl acetate; inhibitory concentration 50; leaves; macrophages; quercetin; viability
Abstract:: ... The effects on the viability of promastigote and amastigote forms of Leishmania (Leishmania) amazonensis and citotoxicity in J774.A1 macrophages of ethanolic extract, fractions and isolated compounds that were obtained from the leaves of Nectandra cuspidata were determined. The total phenolics content (TP) and antioxidant activity were assessed using different assays. The ethyl acetate fraction (E ...
DOI:: 10.1080/14786419.2017.1378214
: https://doi.org/10.1080/14786419.2017.1378214

47. Antimicrobial and antioxidant activities of defatted Moringa oleifera seed meal extract obtained by ultrasound-assisted extraction and application as a natural antimicrobial coating for raw chicken sausages

Author:: Pooja Sharma; Jetsada Wichaphon; Wannaporn Klangpetch
Source:: International journal of food microbiology 2020 v.332 pp. 108770
ISSN:: 0168-1605
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Bacillus cereus; Escherichia coli; Moringa oleifera; absorbance; acetic acid; antibiotics; antimicrobial properties; antioxidant activity; antioxidants; byproducts; caffeic acid; chlorogenic acid; food microbiology; gallic acid; high performance liquid chromatography; meals (products); medicinal plants; minimum inhibitory concentration; quercetin; raw chicken meat; seed oils; sinapic acid; solvents; ultrasonic treatment; ultrasonics; vanillic acid
Abstract:: ... Moringa oleifera is a medicinal plant, and its seed oil is known to have high antioxidant properties. The byproduct obtained after oil extraction is called Moringa oleifera seed meal (MoSM), whose potential bioactivity has not been sufficiently documented. Therefore, this study was undertaken with the aim of identifying Moringa oleifera seed meal extract (ME) as a natural antibacterial and antioxi ...
DOI:: 10.1016/j.ijfoodmicro.2020.108770
: https://doi.org/10.1016/j.ijfoodmicro.2020.108770

48. Antimicrobial and antioxidant activity of Garcinia brasiliensis extracts

Author:: V.M.L. Naves; M.H. dos Santos; I.S. Ribeiro; C.A. da Silva; N.C. Silva; M.A. da Silva; G.A. da Silva; A.L.T. Dias; M. Ionta; D.F. Dias
Source:: South African journal of botany 2019 v.124 pp. 244-250
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Garcinia brasiliensis; anti-infective agents; antifungal properties; antioxidant activity; bark; cytotoxicity; free radical scavengers; high performance liquid chromatography; inhibitory concentration 50; leaves; quercetin
Abstract:: ... The aim of this study was to chemically characterize and evaluate the biological activities of ethanolic and aqueous extracts from its leaf, bark and seed of Garcinia brasiliensis. The total content of phenolic compounds and flavonoids present in the extracts was quantified, and biological screenings were performed to verify antioxidant and antimicrobial activities of the studied extracts. The ext ...
DOI:: 10.1016/j.sajb.2019.05.021
: https://doi.org/10.1016/j.sajb.2019.05.021

49. Antioxidant Activity and Determination of Phenolic Compounds from Eugenia involucrata DC. Fruits by UHPLC-MS/MS

Author:: Antonio Eduardo Nicácio; Eliza Mariane Rotta; Joana Schuelter Boeing; Érica Oliveira Barizão; Elza Kimura; Jesui Vergilio Visentainer; Liane Maldaner
Source:: Food analytical methods 2017 v.10 no.8 pp. 2718-2728
ISSN:: 1936-9751
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Eugenia; analytical methods; antioxidant activity; antioxidants; ellagic acid; fruits; gallic acid; methanol; myricetin; p-coumaric acid; pH; peeling; phosphoric acid; pulp; quercetin; seeds; solvents
Abstract:: ... Fruits have been the focus of several studies aimed at finding new antioxidant sources for protection against the damage caused by reactive species. In this study, the antioxidant activity and the presence of phenolic compounds in all parts (peel, pulp, and seeds) of Eugenia involucrata DC. fruits were evaluated. DPPH·, ABTS·⁺, and ORAC methods were used to determine the antioxidant activity, and ...
DOI:: 10.1007/s12161-017-0840-3
: https://doi.org/10.1007/s12161-017-0840-3

50. Antioxidant Activity, Antibacterial Activity and Chemical Composition of Essential Oil of Artemisia vulgaris L. Leaves from Northeast India

Author:: Sunita Munda; Sudin Kumar Pandey; Sukriti Dutta; Joyashree Baruah; Mohan Lal
Source:: Journal of essential oil-bearing plants 2019 v.22 no.2 pp. 368-379
ISSN:: 0976-5026
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Artemisia vulgaris; Bacillus cereus; Bacillus subtilis; Escherichia coli; Salmonella Typhimurium; Staphylococcus aureus; animal pathogenic bacteria; antibacterial properties; antibiotics; antioxidant activity; ascorbic acid; beta-caryophyllene; borneol; camphor; chemical composition; cineole; ciprofloxacin; essential oils; flavanoids; gas chromatography-mass spectrometry; inhibitory concentration 50; leaves; quercetin; India
Abstract:: ... The present work has been aimed to investigate the chemical composition of the essential oil of Artemisia vulgaris L. leaves by gas chromatography followed by mass spectrometry method (GC/MS), antioxidant activity by DPPH radical scavenging activity, reducing power, total phenolic content, total flavanoid content compared to ascorbic acid for phenols and quercetin for flavonoids. The essential oil ...
DOI:: 10.1080/0972060X.2019.1602083
: https://doi.org/10.1080/0972060X.2019.1602083

51. Antioxidant Capacity and Phenolic and Sugar Profiles of Date Fruits Extracts from Six Different Algerian Cultivars as Influenced by Ripening Stages and Extraction Systems

Author:: Malika Tassoult; Djamel Edine Kati; María África Fernández-Prior; Alejandra Bermúdez-Oria; Juan Fernandez-Bolanos; Guillermo Rodríguez-Gutiérrez
Source:: Foods 2021 v.10 no.3 pp. -
ISSN:: 2304-8158
Subject:: 2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; antioxidants; cinnamic acid; cultivars; dates (fruit); extraction; galactose; gallic acid; glucose; hot water treatment; luteolin; quercetin; sugar content; weight
Abstract:: ... The study investigated the phenols, sugar and the antioxidant capacities of date fruit extracts obtained by organic solvents and by hydrothermal treatment from six different Algerian cultivars at two ripening stages for the first time. The analyzed cultivars exhibited potent antioxidant properties (ferric reducing antioxidant power (FRAP), 1,1-Diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3- ...
DOI:: 10.3390/foods10030503
: https://doi.org/10.3390/foods10030503

52. Antioxidant Capacity of Fractionated Extract and Structural Elucidation of Isolated Compounds from Leaf Extract of Hydrocotyl bonariensis Comm. Exlam

Author:: Emmanuel O Ajani; Saheed Sabiu; Mariam Zakari; Bolatito E Olanipekun; Jacob K. Akintunde; Fisayo A Bamisaye
Source:: Journal of Biologically Active Products from Nature 2017 v.7 no.3 pp. 166-177
ISSN:: 2231-1874
Subject:: 2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; bioactive compounds; chloroform; ethyl acetate; free radical scavengers; hexane; high performance liquid chromatography; hydrogen peroxide; inhibitory concentration 50; leaf extracts; leaves; methanol; nitric oxide; quercetin; solvents; spectral analysis
Abstract:: ... Hydrocotyl bonariensis is a plant which anticataractogenic potentials have been reported. In the present study an attempt was made to evaluate the in vitro antioxidant activity of the fractionates of the leaves extract and also characterize some of its chemical constituents. DPPH, H ₂O ₂, OH and NO free radical scavenging, metal chelating and reducing power activity was used to evaluate the antiox ...
DOI:: 10.1080/22311866.2017.1329667
: https://doi.org/10.1080/22311866.2017.1329667

53. Antioxidant Compounds, Nutritional Quality and Colour of Two Strawberry Genotypes from Fragaria × Ananassa

Author:: Violeta Nour; Ion Trandafir; Sina Cosmulescu
Source:: Erwerbs-Obstbau 2017 v.59 no.2 pp. 123-131
ISSN:: 0014-0309
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Fragaria ananassa; anthocyanins; antioxidant activity; antioxidants; ascorbic acid; color; cultivars; ellagic acid; fruits; genetic background; high performance liquid chromatography; minerals; nutritive value; quercetin; strawberries; titratable acidity; total soluble solids; trace elements
Abstract:: ... In this study, average weight, colour, soluble solids content and titratable acidity were determined as quality parameters of strawberry fruits while ascorbic acid, total anthocyanins, total phenolics, total flavonoids, minerals and trace elements content as nutritional parameters. All these attributes along with the DPPH radical scavenging activity were screened in two strawberry genotypes grown ...
DOI:: 10.1007/s10341-016-0307-5
: https://doi.org/10.1007/s10341-016-0307-5

54. Antioxidant Effects of Four Heartwood Extractives on Midgut Enzyme Activity in Heterotermes indicola (Blattodea: Rhinotermitidae)

Author:: Babar Hassan; Sohail Ahmed; Grant Kirker; Mark E Mankowski; Muhammad Misbah-ul-Haq
Source:: Environmental entomology 2018 v.47 no.3 pp. 741-748
ISSN:: 1938-2936
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Blattodea; Cedrus deodara; Dalbergia sissoo; Heterotermes indicola; Pinus roxburghii; Tectona grandis; antioxidant activity; antioxidants; butylated hydroxytoluene; catalase; enzyme activity; esterases; glutathione transferase; heartwood; inhibitory concentration 50; midgut; quercetin; solid phase extraction; solvents; subterranean termites; wood; wood shavings; Pakistan
Abstract:: ... Heterotermes indicola (Wasmann) (Blattodea: Rhinotermitidae) is a species of subterranean termite that is a destructive pest of wood and wood products in Pakistan. This study evaluated the antioxidant and antienzyme potential of heartwood extractives against H. indicola. Heartwood extractives of four durable wood species, Tectona grandis (L.f), Dalbergia sissoo (Roxb.), Cedrus deodara (Roxb.), and ...
DOI:: 10.1093/ee/nvy029
: https://doi.org/10.1093/ee/nvy029

55. Antioxidant Japanese plum (Prunus salicina) microparticles with potential for food preservation

Author:: María F. Basanta; Alicia Marin; Sonia A. De Leo; Lía N. Gerschenson; Alejandra G. Erlejman; Francisco A. Tomás-Barberán; Ana M. Rojas
Source:: Journal of functional foods 2016 v.24 pp. 287-296
ISSN:: 1756-4646
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Prunus salicina; anthocyanins; antioxidants; color; cyanidin; cytotoxicity; food preservation; functional foods; intestines; kidney cells; lignin; natural additives; oxidative stress; pectins; plums; proanthocyanidins; protective effect; quercetin
Abstract:: ... Fibre microparticles (MPCs) obtained from Japanese plum (Prunus salicina) skin and flesh through ethanolic extraction retained polyphenolic compounds, mainly proanthocyanidins, in 170–200 mg/100 g MPCs levels. Also, phenolics such as anthocyanins (cyanidin 3-galactoside and 3-rutinoside), responsible for red-purple colour, and flavonoids (quercetin derivatives), were found in significant proportio ...
DOI:: 10.1016/j.jff.2016.04.015
: https://doi.org/10.1016/j.jff.2016.04.015

56. Antioxidant Properties and Antibacterial Effects of Eucalyptus camaldulensis Ethanolic Leaf Extract on Biofilm Formation, Motility, Hemolysin Production, and Cell Membrane of the Foodborne Pathogen Listeria monocytogenes

Author:: Ozioma Forstinus Nwabor; Kitiya Vongkamjan; Supayang Piyawan Voravuthikunchai
Source:: Foodborne pathogens & disease 2019 v.16 no.8 pp. 581-589
ISSN:: 1556-7125
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Eucalyptus camaldulensis; Listeria monocytogenes; antibacterial properties; antioxidant activity; ascorbic acid; bacteria; biofilm; cell membranes; consumer attitudes; food pathogens; free radical scavengers; garlic; hemolysins; inhibitory concentration 50; leaf extracts; minimum inhibitory concentration; preservatives; quercetin
Abstract:: ... Consumer concerns toward chemical preservatives have resulted in increased search for healthy green alternative. In this study, the antioxidant activity and antibacterial effects of Eucalyptus camaldulensis ethanolic leaf extract against Listeria monocytogenes, a serious foodborne pathogen, was evaluated. Total phenolic and flavonoid contents of the extract were 11.10 mg garlic acid equivalent/mg ...
DOI:: 10.1089/fpd.2019.2620
: https://doi.org/10.1089/fpd.2019.2620

57. Antioxidant ability of Chenopodium formosanum extracted using an ethanol–ammonium sulfate two-phase system

Author:: Wei-Hsun Wang; Wei-Lin Li; Cheng-You Chen; Min-Yun Chang; Shu-Ling Huang; Chia-Hung Shih; Yung-Sheng Lin
Source:: Chemical and biological technologies in agriculture 2022 v.9 no.1 pp. 14
ISSN:: 2196-5641
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Chenopodium formosanum; agriculture; antioxidant activity; ascorbic acid; free radicals; gallic acid; humans; plant health; quercetin; sulfates
Abstract:: ... BACKGROUND: Chenopodium formosanum (CF) provides the human body with numerous nutritional components. This study used the two-phase system to identify an efficient method to obtain CF extracts. CF extraction was performed using an ethanol–ammonium sulfate two-phase system. The efficacy of different CF extracts with five types of antioxidant ability was tested and compared with traditional aqueous ...
DOI:: 10.1186/s40538-022-00283-6
: https://doi.org/10.1186/s40538-022-00283-6

58. Antioxidant activities and contents of free, esterified and insoluble-bound phenolics in 14 subtropical fruit leaves collected from the south of China

Author:: Guan-Lin Chen; Xin Zhang; Song-Gen Chen; Men-Di Han; Yong-Qing Gao
Source:: Journal of functional foods 2017 v.30 pp. 290-302
ISSN:: 1756-4646
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Averrhoa carambola; Dimocarpus; Litchi chinensis; Mangifera indica; Psidium guajava; antioxidant activity; antioxidants; bioactive compounds; esterification; functional foods; ingredients; isoquercitrin; leaves; oxidative stress; quercetin; quercitrin; rutin; ultra-performance liquid chromatography; China
Abstract:: ... In order to explore the potential of different subtropical fruit leaves as natural sources of bioactive compounds, free, esterified and insoluble-bound forms of total phenolic contents (TPC) and total flavonoid contents (TFC) were determined. The antioxidant activities of fruit leaves was determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity (DPPH), ferric reducing antioxidant po ...
DOI:: 10.1016/j.jff.2017.01.011
: https://doi.org/10.1016/j.jff.2017.01.011

59. Antioxidant activities and phenolic profile of Baccharis trimera, a commonly used medicinal plant from Brazil

Author:: S.M. Sabir; M.L. Athayde; A.A. Boligon; J.B.T. Rocha
Source:: South African journal of botany 2017 v.113 pp. 318-323
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Baccharis genistelloides subsp. crispa; antioxidant activity; ascorbic acid; brain; catalase; egg yolk; food intake; free radical scavengers; gallic acid; glutathione; high performance liquid chromatography; hydroxyl radicals; inhibitory concentration 50; lipid peroxidation; liver; medicinal plants; mice; nitroprusside; oxidative stress; phospholipids; quercetin; rats; rutin; thiobarbituric acid-reactive substances; Brazil
Abstract:: ... The infusions of Baccharis trimera (Asteraceae) are traditionally used in Brazil as a tea to treat liver disorders. It is one of the major constituents in herbal formulations used for the treatment of liver disorders and other diseases. The present study was therefore, aimed to evaluate the potential in vitro and in vivo antioxidant activities and phenolic profile of Baccharis trimera. High perfor ...
DOI:: 10.1016/j.sajb.2017.09.010
: https://doi.org/10.1016/j.sajb.2017.09.010

60. Antioxidant activities and phytochemicals of polar, semi-polar, and nonpolar extracts of used and unused parts of Carica papaya fruit

Author:: Muhamad Insanu; Ni Made Dwi Mara Widyani Nayaka; Lukman Solihin; Komar Ruslan Wirasutisna; Hegar Pramastya; Irda Fidrianny
Source:: Biocatalysis and agricultural biotechnology 2022 v.39 pp. 102270
ISSN:: 1878-8181
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Carica papaya; agricultural biotechnology; antioxidant activity; antioxidants; biocatalysis; colorimetry; ethanol; ethyl acetate; gallic acid; health promotion; hexane; papayas; polyphenols; quercetin
Abstract:: ... Papaya fruit contains phytochemicals, such as polyphenols and flavonoids. These compounds are closely related to its health-promoting effects. The aim of present study was to evaluate the antioxidant activities of the used part (flesh) and unused part (peel and seed) of papaya. Furthermore, the influence of total phenolic (TPC) and flavonoid content (TFC) on the antioxidant activities were analyze ...
DOI:: 10.1016/j.bcab.2021.102270
: https://doi.org/10.1016/j.bcab.2021.102270

61. Antioxidant activities, polyphenol, flavonoid, and amino acid contents in peanut shell

Author:: Bishnu Adhikari; Sanjeev Kumar Dhungana; Muhammad Waqas Ali; Arjun Adhikari; Il-Doo Kim; Dong-Hyun Shin
Source:: Journal of the Saudi Society of Agricultural Sciences 2019 v.18 no.4 pp. 437-442
ISSN:: 1658-077X
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Fabaceae; active ingredients; amino acids; antioxidant activity; antioxidants; byproducts; cosmetics; cultivars; gallic acid; peanut hulls; peanuts; polyphenols; quercetin; secondary metabolites; superoxide dismutase
Abstract:: ... Peanut shell; a byproduct of an important leguminous crop, peanut; is a potential source of different functional compounds. Antioxidant activities, secondary metabolites and amino acid contents in peanut shells of six Korean cultivars were studied in the present study. Peanut shells showed remarkable antioxidant potentials with high amounts of total polyphenol (428.1–739.8 µg gallic acid equivalen ...
DOI:: 10.1016/j.jssas.2018.02.004
: https://doi.org/10.1016/j.jssas.2018.02.004

62. Antioxidant activity and phenolic compounds in 10 selected herbs from Vrujci Spa, Serbia

Author:: Ana Žugić; Sofija Đorđević; Ivana Arsić; Goran Marković; Jelena Živković; Slobodanka Jovanović; Vanja Tadić
Source:: Industrial crops and products 2014 v.52 pp. 519-527
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Crataegus; Fragaria vesca; Hypericum perforatum; Mentha pulegium; Veronica officinalis; additives; antioxidant activity; antioxidants; apigenin; biomarkers; chemical composition; feedstocks; ferulic acid; food industry; foods; herbs; high performance liquid chromatography; isoquercitrin; luteolin; quantitative analysis; quercetin; rutin; tannins; traditional medicine; Serbia
Abstract:: ... There is a growing research interest on investigation of appropriate alternatives of natural origin to synthetic additives used in food products. The aim of this study was to investigate correlation of chemical composition of the best known biomarker plants from the locality of Vrujci Spa, Serbia with their antioxidant activity in vitro, in terms of their potential usage as feedstock materials in ...
DOI:: 10.1016/j.indcrop.2013.11.027
: https://doi.org/10.1016/j.indcrop.2013.11.027

63. Antioxidant activity index (AAI) by the 2,2-diphenyl-1-picrylhydrazyl method

Author:: Scherer, Rodrigo; Godoy, Helena Teixeira
Source:: Food chemistry 2009 v.112 no.3 pp. 654-658
ISSN:: 0308-8146
Subject:: antioxidant activity; methodology; butylated hydroxyanisole; chlorogenic acid; ferulic acid; gallic acid; caffeic acid; quercetin; rutin; protocatechuic acid; cloves; free radicals; oxidative stress; Xanthium strumarium; eugenol
Abstract:: ... The aim of this work was to propose a new antioxidant activity index (AAI) using the DPPH method. Antioxidant activity was expressed as the antioxidant activity index (AAI) calculated as follows: AAI=final DPPH concentration (μgml⁻¹)/IC₅₀ (μgml⁻¹). The compounds, BHA, chlorogenic acid, ferulic acid, gallic acid, caffeic acid, quercetin, rutin, protocatechuic acid and trans-cinnamic acid were used, ...
DOI:: 10.1016/j.foodchem.2008.06.026
: https://doi.org/10.1016/j.foodchem.2008.06.026

64. Antioxidant activity of hopeaphenol isolated from Shorea roxburghii stem bark extract

Author:: R. Subramanian; V. Raj; K. Manigandan; N. Elangovan
Source:: Journal of Taibah University for Science 2015 v.9 no.2 pp. 237-244
ISSN:: 1658-3655
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Shorea; antioxidant activity; bark; food preservatives; free radical scavengers; functional foods; hydrogen peroxide; in vitro studies; polyphenols; quercetin; resveratrol; superoxide anion
Abstract:: ... Hopeaphenol is naturally occurring plant polyphenol composed of resveratrol units. We examined the antioxidant activity of hopeaphenol using various in vitro assays, including 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, superoxide anion radical, hydrogen peroxide scavenging and ferric reducing power. Hopeaphenol showed 63.76% of the activity of DPPH, 64.48% of superoxide anion an ...
DOI:: 10.1016/j.jtusci.2014.11.004
: https://doi.org/10.1016/j.jtusci.2014.11.004

65. Antioxidant and Anti-Proliferative Properties of Hagenia abyssinica Roots and Their Potentially Active Components

Author:: Minxia Fan; Guilin Chen; Yongli Zhang; Lutfun Nahar; Satyajit Dey Sarker; Guangwan Hu; Mingquan Guo
Source:: Antioxidants 2020 v.9 no.2 pp. -
ISSN:: 2076-3921
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Hagenia abyssinica; antioxidant activity; caffeic acid; cell lines; colorectal neoplasms; dose response; ethanol; ethyl acetate; high performance liquid chromatography; inhibitory concentration 50; liver neoplasms; mass spectrometry; neoplasm cells; nuclear magnetic resonance spectroscopy; quercetin; roots; sulfonic acids; superoxide anion
Abstract:: ... Hagenia abyssinica (Bruce) J. F. Gmel. is a multipurpose dioecious tree that has been used to treat various ailments, for example, the flowers of H. abyssinica have been widely used as a tea to treat intestinal parasites by local residents and the roots of H.abyssinica could also be used for anticancer purposes. Antioxidant activity could be one of the most important pathways to suppress cancer an ...
DOI:: 10.3390/antiox9020143
: https://doi.org/10.3390/antiox9020143

66. Antioxidant and Antitumor Activities of Novel Quercetin-Loaded Electrospun Cellulose Acetate/Polyethylene Glycol Fibrous Materials

Author:: Nikoleta Stoyanova; Mariya Spasova; Nevena Manolova; Iliya Rashkov; Ani Georgieva; Reneta Toshkova
Source:: Antioxidants 2020 v.9 no.3 pp. -
ISSN:: 2076-3921
Subject:: 2,2-diphenyl-1-picrylhydrazyl; X-ray diffraction; antineoplastic activity; antioxidant activity; bioactive compounds; cell lines; cellulose; cellulose acetate; contact angle; cytotoxicity; differential scanning calorimetry; free radical scavengers; hydrophilicity; in vitro studies; infrared spectroscopy; melanoma; neoplasm cells; polyethylene glycol; quercetin; scanning electron microscopy; ultraviolet-visible spectroscopy
Abstract:: ... The aim of present study was to obtain novel fibrous materials based on cellulose derivative and polyethylene glycol loaded with natural biologically active compound quercetin by electrospinning. Several methods including scanning electron microscopy (SEM), IR spectroscopy, X-ray diffraction analysis (XRD), water contact angle measurements, differential scanning calorimetry (DSC), and UV-VIS spect ...
DOI:: 10.3390/antiox9030232
: https://doi.org/10.3390/antiox9030232

67. Antioxidant and anti-inflammatory activities of Arbutus unedo aqueous extract

Author:: Idir Moualek; Ghenima Iratni Aiche; Nadjet Mestar Guechaoui; Souad Lahcene; Karim Houali
Source:: Asian Pacific Journal of Tropical Biomedicine 2016 v.6 pp. 937-944
ISSN:: 2221-1691
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Arbutus unedo; albumins; anti-inflammatory activity; antioxidant activity; denaturation; emulsions; erythrocytes; free radicals; gallic acid; humans; hydrogen peroxide; hydroxyl radicals; inhibitory concentration 50; iron; peroxidation; quercetin; sodium chloride
Abstract:: ... To evaluate the antioxidant and anti-inflammatory activities of aqueous extract of Arbutus unedo (A. unedo) leaves.In this context, the in vitro antioxidant activity was demonstrated by 2,2-diphenyl-1-picrylhydrazyl, hydroxyl radical and H2O2 radical scavenging, ferrous ion chelating, ferric reducing power, total antioxidant capacity and by the protection against peroxidation of β-carotene-linolei ...
DOI:: 10.1016/j.apjtb.2016.09.002
: https://doi.org/10.1016/j.apjtb.2016.09.002

68. Antioxidant and antibacterial study of 10 flavonoids revealed rutin as a potential antibiofilm agent in Klebsiella pneumoniae strains isolated from hospitalized patients

Author:: Zhibin Wang; Zixuan Ding; Zhaoyinqian Li; Yinhuan Ding; Fan Jiang; Jinbo Liu
Source:: Microbial pathogenesis 2021 v.159 pp. 105121
ISSN:: 0882-4010
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Escherichia coli; Klebsiella pneumoniae; antibacterial properties; antioxidant activity; apigenin; bacterial growth; biofilm; biomass production; free radicals; gene expression; genes; growth curves; hesperidin; kaempferol; luteolin; multiple drug resistance; naringenin; naringin; pathogenesis; quercetin; rutin
Abstract:: ... The emergence of multidrug resistance (MDR) and extensive drug resistance (XDR) in Klebsiella pneumoniae strains has posed great threats to conventional antibiotics. Previous studies have shown that plant-derived flavonoids have inhibitory functions against pathogens. However, in K. pneumoniae, the antibacterial activity of different flavonoids against growth and biofilm formation remains a myster ...
DOI:: 10.1016/j.micpath.2021.105121
: https://doi.org/10.1016/j.micpath.2021.105121

69. Antioxidant and antifungal activities of Smilax campestris Griseb. (Smilacaceae)

Author:: Marcela Isis Morais; Maria Eduarda Amaral Pinto; Sthéfane Guimarães Araújo; Ana Hortência Fonsêca Castro; Joaquim Mauricio Duarte-Almeida; Luiz Henrique Rosa; Carlos Augusto Rosa; Susana Johann; Luciana Alves Rodrigues dos Santos Lima
Source:: Natural product research 2014 v.28 no.16 pp. 1275-1279
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Candida albicans; Candida glabrata; Candida krusei; Candida parapsilosis; Candida tropicalis; Cryptococcus gattii; Smilax; aerial parts; antifungal properties; antioxidant activity; antioxidants; butanol; ethanol; high performance liquid chromatography; quercetin; rutin; yeasts
Abstract:: ... Ethanol extract and fractions obtained from aerial parts of Smilax campestris were examined in order to determine their phenolic composition, antioxidant capacity and antifungal activities. High-performance liquid chromatography coupled with DAD analysis indicated that quercetin and rutin were the main phenolic compounds present in butanol fraction and ethanol extract, respectively. The antioxidan ...
DOI:: 10.1080/14786419.2014.895728
: https://doi.org/10.1080/14786419.2014.895728

70. Antioxidant and antifungal activity of carnauba wax powder extracts

Author:: Lúcia Betânia da Silva Andrade; Murilo Sérgio da Silva Julião; Ricardo Carneiro Vera Cruz; Tigressa Helena Soares Rodrigues; Raquel Oliveira dos Santos Fontenelle; André Luis Coelho da Silva
Source:: Industrial crops and products 2018 v.125 pp. 220-227
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Copernicia prunifera; Microsporum canis; Trichophyton rubrum; antifungal agents; antifungal properties; antioxidant activity; antioxidants; carnauba wax; catechin; chlorogenic acid; epicuticular wax; ethanol; free radicals; gallic acid; high performance liquid chromatography; keratinophilic fungi; leaves; median effective concentration; quercetin; solvents; Brazil
Abstract:: ... Carnauba wax is a commercially valuable product derived from epicuticular wax powder (CWP) from the leaves of Copernicia prunifera (Arecaceae), a palm tree native to northeastern Brazil. CWP exists as a fine powder on both young, upright, closed leaves (type A wax), and mature, pendant, open leaves (type B wax). The aim of this study was to evaluate the effect of extraction time on aqueous and eth ...
DOI:: 10.1016/j.indcrop.2018.09.004
: https://doi.org/10.1016/j.indcrop.2018.09.004

71. Antioxidant and antifungal potential of methanol extracts of Phellinus spp. from Sonora, Mexico

Author:: Jesús Fernando Ayala-Zavala; Brenda Adriana Silva-Espinoza; Manuel Reynaldo Cruz-Valenzuela; Mónica Alejandra Villegas-Ochoa; Martín Esqueda; Gustavo Adolfo González-Aguilar; Yazaric Calderón-López
Source:: Revista iberoamericana de micología 2012 v.29 no.3 pp. 132-138
ISSN:: 1130-1406
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Alternaria alternata; Phellinus; absorbance; antifungal properties; antioxidant activity; antioxidants; bioactive compounds; free radicals; fungi; gallic acid; methanol; oxygen; pathogens; quercetin; Mexico
Abstract:: ... BACKGROUND: Among the potential natural sources of bioactive compounds, those of the macroscopic fungi Phellinus spp. have been identified by previous researches. Phenolic compounds are among the major antioxidant and antimicrobial contributors due to their bioactive properties. AIMS: The goal of this study was to determine the total phenolic and flavonoid contents, and its relation with the antio ...
DOI:: 10.1016/j.riam.2011.09.004
: https://doi.org/10.1016/j.riam.2011.09.004

72. Antioxidant and antigenotoxic effect of dairy products supplemented with red ginseng extract

Author:: Hanyeong Park; Minhee Lee; Kee-Tae Kim; Eunju Park; Hyun-Dong Paik
Source:: Journal of dairy science 2018 v.101 no.10 pp. 8702-8710
ISSN:: 0022-0302
Subject:: 2,2-diphenyl-1-picrylhydrazyl; DNA damage; Panax; antioxidants; comet assay; gallic acid; humans; leukocytes; milk; oxygen radical absorbance capacity; quercetin; yogurt
Abstract:: ... The purpose of this study was to evaluate the antioxidant and antigenotoxic effect of dairy products milk (M) and yogurt (Y) after the addition of 2% red ginseng extract to milk (RM) and to yogurt (RY). Total phenolic content, total flavonoid content, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, oxygen radical absorbance capacity, and total radical trapping antioxidant potential were ...
DOI:: 10.3168/jds.2018-14690
: https://doi.org/10.3168/jds.2018-14690

73. Antioxidant and enzyme inhibitory activities of disodium rabdosiin isolated from Alkanna sfikasiana Tan, Vold and Strid

Author:: T. Tufa; H. Damianakos; G. Zengin; K. Graikou; I. Chinou
Source:: South African journal of botany 2019 v.120 pp. 157-162
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Alkanna; acetylcholinesterase; aerial parts; alpha-amylase; antioxidant activity; cyclohexanes; enzyme inhibition; linoleic acid; quercetin; roots; rosmarinic acid
Abstract:: ... Alkanna sfikasiana Tan, Vold and Strid is an endemic Greek species of Boraginaceae family. From the roots, the new natural product disodium rabdosiin (1) along with rosmarinic acid (2) were isolated from the methanolic extract and lanosta-7,24-dien-3β-ol (3) and linoleic acid (4) from the cyclohexane extract. From the methanolic extract of the aerial parts two flavonoids quercetin 3-Ο-β-D-glucosid ...
DOI:: 10.1016/j.sajb.2018.04.005
: https://doi.org/10.1016/j.sajb.2018.04.005

74. Antioxidant and hepatoprotective activity of ethanolic extract of leaves of Solidago microglossa containing polyphenolic compounds

Author:: S.M. Sabir; S.D. Ahmad; A. Hamid; M.Q. Khan; M.L. Athayde; D.B. Santos; A.A. Boligon; J.B.T. Rocha
Source:: Food chemistry 2012 v.131 no.3 pp. 741-747
ISSN:: 0308-8146
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Solidago; benzoic acid; brain; egg yolk; ferrous sulfate; free radical scavengers; gallic acid; hepatoprotective effect; high performance liquid chromatography; hydroxyl radicals; hydroxylation; inhibitory concentration 50; leaf extracts; leaves; liver; medicinal plants; mice; nitroprusside; phospholipids; polyphenols; quercetin; rats; rutin; thiobarbituric acid; thiobarbituric acid-reactive substances; Brazil
Abstract:: ... The antioxidative and hepatoprotective potential of Solidago microglossa D.C, a widely used medicinal plant from Brazil was investigated. The leaf extract showed inhibition against thiobarbituric acid reactive species (TBARS) induced by different prooxidants (10μM FeSO₄ and 5μM sodium nitroprusside SNP) in rat liver, brain and phospholipid homogenates from egg yolk. Moreover, the free radical scav ...
DOI:: 10.1016/j.foodchem.2011.09.026
: https://doi.org/10.1016/j.foodchem.2011.09.026

75. Antioxidant and α-glucosidase inhibitor activities of natural compounds isolated from Quercus gilva Blume leaves

Author:: Anastasia Wheni Indrianingsih; Sanro Tachibana; Rizna Triana Dewi; Kazutaka Itoh
Source:: Asian Pacific Journal of Tropical Biomedicine 2015 v.5 pp. 748-755
ISSN:: 2221-1691
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Quercus gilva; Saccharomyces; alpha-glucosidase; antioxidant activity; beta-carotene; bleaching; catechin; enzyme inhibition; enzyme inhibitors; epicatechin; gel chromatography; hydrogen peroxide; in vitro studies; inhibitory concentration 50; medicine; methanol; quercetin; solvents
Abstract:: ... To isolate and investigate antioxidant and α-glucosidase inhibitor compounds in the leaves of Quercus gilva Blume (Q. gilva).Dry leaves of Q. gilva were extracted with methanol and the methanolic extract was further separated by silica gel column chromatography using several solvents with increasing polarity. The antioxidant activities of the isolated compounds were evaluated using various in vitr ...
DOI:: 10.1016/j.apjtb.2015.07.004
: https://doi.org/10.1016/j.apjtb.2015.07.004

76. Antioxidant capacity and bioactive compounds of four Brazilian native fruits

Author:: Cristiane C. Denardin; Gabriela E. Hirsch; Ricardo F. da Rocha; Márcia Vizzotto; Amélia T. Henriques; José C.F. Moreira; Fátima T.C.R. Guma; Tatiana Emanuelli
Source:: Yàowù shípǐn fēnxī 2015 v.23 no.3 pp. 387-398
ISSN:: 1021-9498
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Butia eriospatha; Eugenia uniflora; Psidium cattleyanum; Rubus; antioxidant activity; antioxidants; ascorbic acid; bioactive compounds; blackberries; carotenoids; color; cyanidin; drugs; fruits; gallic acid; high performance liquid chromatography; inhibitory concentration 50; isoquercitrin; quercetin; quercitrin; Brazil
Abstract:: ... The purpose of this study was to evaluate the bioactive compounds and antioxidant activity of extracts from araçá (Psidium cattleianum), butiá (Butia eriospatha), and pitanga (Eugenia uniflora) fruits with different flesh colors (i.e., purple, red, and orange), and blackberries (Rubus sp.; cv. Xavante and Cherokee) collected in the southern region of Brazil. The content of ascorbic acid, total car ...
DOI:: 10.1016/j.jfda.2015.01.006
: https://doi.org/10.1016/j.jfda.2015.01.006

77. Antioxidant capacity differences between the major flavonoids in cherry (Prunus pseudocerasus) in vitro and in vivo models

Author:: Weixue Dong; Dejing Chen; Zhiyuan Chen; Haiyan Sun; Zhimin Xu
Source:: Lebensmittel-Wissenschaft + Technologie 2021 v.141 pp. 110938
ISSN:: 0023-6438
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Prunus pseudocerasus; antioxidant activity; ascorbic acid; blood serum; cherries; glutathione peroxidase; heart; kidneys; liver; malondialdehyde; mice; quercetin; rutin; superoxide dismutase
Abstract:: ... The antioxidant capacities of cherry (Prunus pseudocerasus) flavonoids, astragalin cyanidin-3-O-glucoside, cynaroside, quercetin, rutin, and vitexin were evaluated using in vitro assays and in vivo model. With in vitro assays, cyanidin-3-O-glucoside, cynaroside, or rutin showed higher activity in scavenging DPPH (2,2-diphenyl-1-picrylhydrazyl), superoxide, and hydroxyl free radicals and reducing p ...
DOI:: 10.1016/j.lwt.2021.110938
: https://doi.org/10.1016/j.lwt.2021.110938

78. Antioxidant characteristics of ice cream supplemented with sugarcane (Saccharum officinarum L.) juice

Author:: Rahman Ullah; Muhammad Nadeem; Muhammad Ayaz; Muhamamd Tayyab; Muhammad Imran; Rao Sajid
Source:: Food science and biotechnology 2015 v.24 no.4 pp. 1227-1232
ISSN:: 1226-7708
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Saccharum officinarum; antioxidant activity; free radical scavengers; ice cream; nitric oxide; oxidation; quercetin; sensory properties; sucrose; sugarcane juice; unsaturated fatty acids
Abstract:: ... Antioxidant characteristics of ice cream supplemented with sugarcane juice were investigated. An original 13% sucrose content in ice cream was supplemented with 20, 40, and 60% sugarcane juice (82, 164, and 246 mL/L, treatments T₁, T₂, and T₃, respectively). The sucrose content of all treatments was 13%. DPPH free radical scavenging activities of control, T₁, T₂, and T₃ ice cream samples were 5.64 ...
DOI:: 10.1007/s10068-015-0157-1
: https://doi.org/10.1007/s10068-015-0157-1

79. Antioxidant compounds from the stem bark of Garcinia atroviridis

Author:: Wen-Nee Tan; Melati Khairuddean; Keng-Chong Wong; Woei-Yenn Tong; Darah Ibrahim
Source:: Journal of Asian natural products research 2016 v.18 no.8 pp. 804-811
ISSN:: 1477-2213
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Garcinia atroviridis; antioxidant activity; ascorbic acid; bark; free radical scavengers; kaempferol; mass spectrometry; nuclear magnetic resonance spectroscopy; quercetin; xanthone
Abstract:: ... A new xanthone, namely garcinexanthone G (1), along with eight known compounds, stigmasta-5,22-dien-3 β -ol (2), stigmasta-5,22-dien-3- O - β -glucopyranoside (3), 3 β -acetoxy-11 α ,12 α -epoxyoleanan-28,13 β -olide (4), 2,6-dimethoxy- p -benzoquinone (5), 1,3,5-trihydroxy-2-methoxyxanthone (6), 1,3,7-trihydroxyxanthone (7), kaempferol (8) and quercetin (9), were isolated from the stem bark of Ga ...
DOI:: 10.1080/10286020.2016.1160071
: https://doi.org/10.1080/10286020.2016.1160071

80. Antioxidant compounds in hawthorn fruits (Crataegus spp.) of Mexico

Author:: Rosario García-Mateos; Emmanuel Ibarra-Estrada; Raúl Nieto-Angel
Source:: Revista mexicana de biodiversidad 2013 v.84 no.4 pp. 1298-1304
ISSN:: 1870-3453
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Crataegus; antioxidant activity; antioxidants; ascorbic acid; fruits; functional foods; genotype; germplasm; inhibitory concentration 50; litchis; peaches; phytopharmaceuticals; quercetin; strawberries; Mexico
Abstract:: ... The content of phytochemicals associated with the antioxidant activity of the fruits of species of hawthorn (Crataegus spp.; Rosacea) located in Mexico is unknown. The objective of the present study was to evaluate the content of phenolic compounds, flavonoids, vitamin C and the antioxidant activity in a selection of Mexican hawthorn species. A quantification was made of total phenols, flavonoids ...
DOI:: 10.7550/rmb.35675
: https://doi.org/10.7550/rmb.35675

81. Antioxidant phenolic compounds isolated from wild Pyrus ussuriensis Maxim. fruit peels and leaves

Author:: Daren Qiu; Jie Guo; Huimei Yu; Jiao Yan; Shengxiang Yang; Xiang Li; Yamei Zhang; Jinzhu Sun; Jie Cong; Shuliang He; Dongsheng Wei; Jian-Chun Qin
Source:: Food chemistry 2018 v.241 pp. 182-187
ISSN:: 0308-8146
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Pyrus ussuriensis; antioxidant activity; apigenin; chromatography; daidzein; fruit peels; humans; inhibitory concentration 50; leaf extracts; leaves; medicine; nuclear magnetic resonance spectroscopy; pears; quercetin; reactive oxygen species; rutin
Abstract:: ... Thirteen phenolic compounds were isolated from pear (Pyrus ussuriensis Maxim.) peels and leaves extracts by using various column chromatography techniques with a guided DPPH (1,1-diphenyl-2-picrylhydrazyl) radical-scavenging assay, the result of antioxidant activity of phenolic compounds is then verified by measurement of ROS (reactive oxygen species). The isolated compounds were identified as rut ...
DOI:: 10.1016/j.foodchem.2017.08.072
: https://doi.org/10.1016/j.foodchem.2017.08.072

82. Antioxidant potential and free radical scavenging activity of Parkia roxburghii, G. Don, a lesser known leguminous tree from North East India

Author:: Rakesh Kumar Dubey; Garima Upadhyay; Vikas Singh; Sudhakar Pandey
Source:: South African journal of botany 2020 v.131 pp. 454-461
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; DNA damage; Parkia timoriana; ammonium thiocyanate; antioxidant activity; ascorbic acid; beans; caffeic acid; chlorogenic acid; diet; disease prevention; ellagic acid; ferulic acid; flowers; food plants; free radical scavengers; free radicals; gallic acid; genetic variation; hydroxyl radicals; inhibitory concentration 50; kaempferol; leaves; lipids; oxidation; pods; quercetin; seed extracts; seeds; superoxide anion; tandem mass spectrometry; trees; India
Abstract:: ... Total phenolics in extracts of different parts of Parkia roxburghii varied from 80.1 (flowers) to 311.6 mg/ g GAE (Pods) with moderate amounts of flavonoids and high antioxidant activity (50.1–92.4%). The pods of Parkia roxburghii were found to be potent DPPH radical scavengers followed by leaves, seeds and then flowers as evident by their low IC₅₀, EC₅₀ values and reasonably high ARP values (34.5 ...
DOI:: 10.1016/j.sajb.2020.03.013
: https://doi.org/10.1016/j.sajb.2020.03.013

83. Antioxidant properties and principal phenolic phytochemicals of Iranian tarragon (Artemisia dracunculus L.) accessions

Author:: Hasan Mumivand; Mesbah Babalar; Leila Tabrizi; Lyle E. Craker; Majid Shokrpour; Javad Hadian
Source:: Horticulture, environment and biotechnology 2017 v.58 no.4 pp. 414-422
ISSN:: 2211-3452
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Artemisia dracunculus; antioxidant activity; antioxidants; caffeic acid; coumarin; dietary supplements; phytopharmaceuticals; plant extracts; quercetin; reversed-phase high performance liquid chromatography; spectrophotometers; spices; tarragon; Iran
Abstract:: ... Artemisia dracunculus L. (tarragon), a common spice and vegetable grown throughout Iran, is an economically important species of the Asteraceae family. The free radical-scavenging activities of 12 Iranian A. dracunculus accession extracts were evaluated using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and ferric-reducing antioxidant power (FRAP) assays. The total phenolic and flavonoid contents were mea ...
DOI:: 10.1007/s13580-017-0121-5
: https://doi.org/10.1007/s13580-017-0121-5

84. Antioxidant, anti-inflammatory and wound healing properties of medicinal plant extracts used to treat wounds and dermatological disorders

Author:: S. Ghuman; B. Ncube; J.F. Finnie; L.J. McGaw; E. Mfotie Njoya; R.M. Coopoosamy; J. Van Staden
Source:: South African journal of botany 2019 v.126 pp. 232-240
ISSN:: 0254-6299
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Aloe; Eucomis autumnalis; Haworthia; Hypericum; Zantedeschia aethiopica; anti-inflammatory activity; anti-inflammatory agents; antioxidant activity; antioxidants; bulbs; enzyme inhibition; inhibitory concentration 50; leaves; lipoxygenases; medicinal plants; methanol; models; nitric oxide; pathogens; plant extracts; quercetin; roots; screening; skin diseases; tissue repair; South Africa
Abstract:: ... Medicinal plants used for wound healing and skin diseases are key to unlocking the doors to combating resistance of pathogens to pharmaceuticals and allopathic management. This study was aimed at screening the antioxidant effects, the anti-inflammatory activity and wound healing capacity of traditional medicinal plants used in the treatment of skin conditions and wound healing in KwaZulu-Natal, So ...
DOI:: 10.1016/j.sajb.2019.07.013
: https://doi.org/10.1016/j.sajb.2019.07.013

85. Antioxidant, diuretic activities and polyphenol content of Stereospermum kunthianum Cham. (Bignoniaceae)

Author:: M. Compaoré; A. Lamien-Meda; C. Mogoşan; C.E. Lamien; M. Kiendrebeogo; O. Voştinaru; L. Vlase; C. Ionescu; O.G. Nacoulma
Source:: Natural product research 2011 v.25 no.19 pp. 1777-1788
ISSN:: 1478-6427
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Stereospermum; acetone; antioxidant activity; antioxidants; apigenin; high performance liquid chromatography; isoquercitrin; kaempferol; luteolin; mass spectrometry; methanol; p-coumaric acid; polyphenols; quercetin; quercitrin; rutin; xanthine oxidase
Abstract:: ... Stereospermum kunthianum was used for biological and phytochemical investigations. In biological studies, antioxidant activities were investigated with water, methanol and aqueous acetone extracts. Furthermore, the xanthine oxidase inhibitory activity and the diuretic activity of an aqueous acetone extract were evaluated. In the phytochemical investigations, the flavonoids and polyphenols were qua ...
DOI:: 10.1080/14786419.2010.488630
: https://doi.org/10.1080/14786419.2010.488630

86. Antioxidant, xanthine oxidase and lipoxygenase inhibitory activities and phenolics of Bauhinia rufescens Lam. (Caesalpiniaceae)

Author:: M. Compaoré; C.E. Lamien; A. Lamien-Meda; L. Vlase; M. Kiendrebeogo; C. Ionescu; O.G. Nacoulma
Source:: Natural product research 2012 v.26 no.11 pp. 1069-1074
ISSN:: 1478-6427
Subject:: acetone; quercitrin; xanthine oxidase; isoquercitrin; kaempferol; 2,2-diphenyl-1-picrylhydrazyl; linoleate 13S-lipoxygenase; Bauhinia; high performance liquid chromatography; enzyme inhibitors; quercetin; hydrolysis; ethyl acetate; rutin; mass spectrometry; antioxidant activity; ferulic acid; antioxidants; leaves
Abstract:: ... An aqueous acetone extract of the stem with the leaves of Bauhinia rufescens and its fractions were analysed for their antioxidant and enzyme-inhibitory activities, as well as their phytochemical composition. For measurement of the antioxidant activities, the 2,2-diphenyl-1-picrylhydrazyl, 2,2′-azinobis(3-ethylbenzoline-6-sulphonate) and the ferric-reducing methods were used. The results indicated ...
DOI:: 10.1080/14786419.2011.559948
: https://doi.org/10.1080/14786419.2011.559948

87. Antioxidant, α-glucosidase, and nitric oxide inhibitory activities of Phyllanthus acidus and LC–MS/MS profile of the active extract

Author:: Siti Zulaikha Abd Ghafar; Ahmed Mediani; Maulidiani; Nurul Shazini Ramli; Faridah Abas
Source:: Food bioscience 2018 v.25 pp. 134-140
ISSN:: 2212-4292
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Phyllanthus; alpha-glucosidase; antioxidant activity; cinnamic acid; diabetes; enzyme inhibition; epicatechin; ethanol; free radical scavengers; fruits; gooseberries; high performance liquid chromatography; inflammation; inhibitory concentration 50; kaempferol; leaves; nitric oxide; quercetin; tandem mass spectrometry; ultra-performance liquid chromatography
Abstract:: ... The inhibition of α-glucosidase and nitric oxide, and the antioxidant activities of two parts (leaf and fruit) of Phyllanthus acidus (an Asian gooseberry) extracted with various ethanol ratios (0%, 50% and 100%) were studied. The compounds that were associated with the three bioactivities in the P. acidus extracts were identified using ultra-high-performance liquid chromatography tandem mass spect ...
DOI:: 10.1016/j.fbio.2018.08.009
: https://doi.org/10.1016/j.fbio.2018.08.009

88. Antioxidant/antihyperglycemic activity of phenolics from sugarcane (Saccharum officinarum L.) bagasse and identification by UHPLC-HR-TOFMS

Author:: Rui Zheng; Shan Su; Huifang Zhou; Huaifeng Yan; Junhua Ye; Zhengang Zhao; Lijun You; Xiong Fu
Source:: Industrial crops and products 2017 v.101 pp. 104-114
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Saccharum officinarum; alpha-glucosidase; antioxidant activity; antioxidants; genistein; genistin; glucose; glycemic effect; human cell lines; income; p-coumaric acid; quercetin; raw materials; sucrose alpha-glucosidase; sugarcane; sugarcane bagasse
Abstract:: ... Sugarcane bagasse, one of the most abundant agro-food by-products, is a very promising raw material available at low cost for recovering bioactive substances. In this study, the total phenolic content was measured by Folin-Ciocalteu method and the antioxidant activity of the extracts was determined by DPPH, ABTS+ and ROO (ORAC) methods. The results indicated that 30% hydroalcoholic fraction (30%E) ...
DOI:: 10.1016/j.indcrop.2017.03.012
: https://doi.org/10.1016/j.indcrop.2017.03.012

89. Antioxidants of 15 onions with white, yellow, and red colors and their relationship with pungency, anthocyanin, and quercetin

Author:: Eun Jin Lee; Bhimanagouda S. Patil; Kil Sun Yoo
Source:: Lebensmittel-Wissenschaft + Technologie 2015 v.63 no.1 pp. 108-114
ISSN:: 0023-6438
Subject:: 2,2-diphenyl-1-picrylhydrazyl; alliin lyase; anthocyanins; antioxidant activity; antioxidants; bulbs; color; juices; methanol; onions; quercetin; total soluble solids
Abstract:: ... We have investigated the antioxidant activity (AOA) of 15 short-day onions with white, yellow, or red colors and elucidated the relationships between pungency, anthocyanins, quercetin, and the AOA levels. There were substantial variations in both the pungency and total soluble solid content, which showed varying responses by bulb colors. The AOA in white or red onions tended to have low and high l ...
DOI:: 10.1016/j.lwt.2015.03.028
: https://doi.org/10.1016/j.lwt.2015.03.028

90. Antioxidative Activities of Various Fractions of Gedi's Leaf Extracts (Abelmoschus Manihot L. Medik)

Author:: Mercy Taroreh; Sri Raharjo; Pudji Hastuti; Agnes Murdiati
Source:: Agriculture and Agricultural Science Procedia 2016 v.9 pp. 271-278
ISSN:: 2210-7843
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Abelmoschus manihot; acetone; antioxidant activity; chromatography; free radical scavengers; hexane; iron; leaf extracts; leaves; methanol; quercetin; silica gel; singlet oxygen
Abstract:: ... This study aimed to investigate antioxidative activities of various fractions of Abelmoschus manihot leaf extract. The fractions were separated based on polarity and the antioxidant activities of each of them were determined. The leaves were extracted using hexane, acetone and methanol serially. The extract was separated by column chromatography using ethyl acetate-methanol gradient elution as mob ...
DOI:: 10.1016/j.aaspro.2016.02.112
: https://doi.org/10.1016/j.aaspro.2016.02.112

91. Antioxidative activity of Lenzites warnieri basidiocarps

Author:: Aleksandar Z. Knežević; Ivan N. Milovanović; Jelena B. Vukojević
Source:: Zbornik Matice srpske za prirodne nauke 2017 v.2017 no.133 pp. 163-171
ISSN:: 2406-0828
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Lenzites; antioxidant activity; basidiomata; education; median effective concentration; neutralization; quercetin
Abstract:: ... Considering that mushrooms synthesize different kinds of compounds with antioxidative activity and that search for natural antioxidants is a topical study area, testing of unstudied species is fully justified. The aim of the study was to evaluate antioxidative capacity of Lenzites warnieri basidiocarps using different solvents. Antioxidative potential of 96% ethanolic, 70% ethanolic and methanolic ...
DOI:: 10.2298/ZMSPN1733163K
: https://doi.org/10.2298/ZMSPN1733163K

92. Antioxidative potentials and chromatographic analysis of beverages from blends of gluten-free acha (Digitaria exilis) and tigernut (Cyperus esculentus) extracts

Author:: Adebanjo A. Badejo; Bolanle Olawoyin; Sule O. Salawu; Oluwagbemiga S. Fasuhanmi; Aline A. Boligon; Victor N. Enujiugha
Source:: Journal of food measurement & characterization 2017 v.11 no.4 pp. 2094-2101
ISSN:: 2193-4126
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Cyperus esculentus; Digitaria exilis; antioxidant activity; beverages; caffeic acid; chlorogenic acid; diodes; ellagic acid; gallic acid; ginger; gluten-free foods; high performance liquid chromatography; kaempferol; nutritive value; quercetin; quercitrin; rutin; sensory evaluation
Abstract:: ... The demand for functional beverages has continued to increase because of the health benefits they impart. Acha (Digitaria exilis) and tigernut (Cyperus esculentus) provide great economic and health benefits aside their nutritive values. The study aims to further add values to both by producing beverage blends from malted acha and tigernut extracts, spiced with ginger extract. The radical scavengin ...
DOI:: 10.1007/s11694-017-9593-3
: https://doi.org/10.1007/s11694-017-9593-3

93. Antioxidative principals of Jussiaea repens: an edible medicinal plant

Author:: Huang, Hai-Lan; Li, Dong-Li; Li, Xiao-Ming; Xu, Bo; Wang, Bin-Gui
Source:: International journal of food science & technology 2007 v.42 no.10 pp. 1219-1227
ISSN:: 0950-5423
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Ludwigia; antioxidant activity; antioxidants; fractionation; kaempferol; medicinal plants; nuclear magnetic resonance spectroscopy; potassium; quantitative analysis; quercetin; reversed-phase high performance liquid chromatography; rosmarinic acid; spectral analysis; vegetables; China
Abstract:: ... Jussiaea repens L. (JRL) is an edible medicinal plant and is also used as a vegetable by the local people in southwestern China. The crude extract and its four fractions derived from JRL were evaluated for the 1,1-diphenyl-2-picrylhydrazyl radical-scavenging ability, hydroxyl radical-scavenging capacity and the potassium ferricyanide reduction property. The ethyl acetate-soluble fraction (EAF) and ...
DOI:: 10.1111/j.1365-2621.2006.01456.x
: https://doi.org/10.1111/j.1365-2621.2006.01456.x

94. Arnica montana Cell Culture Establishment, and Assessment of Its Cytotoxic, Antibacterial, α-Amylase Inhibitor, and Antioxidant In Vitro Bioactivities

Author:: Aurelio Nieto-Trujillo; Francisco Cruz-Sosa; Rosendo Luria-Pérez; Gabriel Alfonso Gutiérrez-Rebolledo; Angélica Román-Guerrero; Cristina Burrola-Aguilar; Carmen Zepeda-Gómez; María Elena Estrada-Zúñiga
Source:: Plants 2021 v.10 no.11 pp. -
ISSN:: 2223-7747
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Arnica montana; Escherichia coli; Staphylococcus aureus; alpha-amylase; antioxidants; biomass; callus; cell suspension culture; cell viability; cytotoxicity; gallic acid; growth models; kinetin; lymphoma; picloram; plant growth substances; quercetin; secondary metabolites; sesquiterpenoids; verbascoside
Abstract:: ... Arnica montana cell suspension culture could be a sustainable source of a vegetal material producer of secondary metabolites (SMs) possessing biological effects. Different plant growth regulator concentrations (0–5 mg/L) were tested in foliar explants to induce a callus that was used to establish a cell suspension culture. Growth kinetics was carried out for 30 days. A methanolic extract obtained ...
DOI:: 10.3390/plants10112300
: https://doi.org/10.3390/plants10112300

95. Aryl glycosidases from Lactobacillus plantarum increase antioxidant activity of phenolic compounds

Author:: José María Landete; José Antonio Curiel; Héctor Rodríguez; Blanca de las Rivas; Rosario Muñoz
Source:: Journal of functional foods 2014 v.7 pp. 322-329
ISSN:: 1756-4646
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Lactobacillus plantarum; antioxidant activity; beta-galactosidase; bioavailability; cell culture; daidzin; enzyme activity; fermented foods; gastrointestinal system; glucosides; glycosylation; high performance liquid chromatography; intestinal microorganisms; lactic acid bacteria; phloridzin; polyphenols; probiotics; quercetin; superoxide dismutase; tissues
Abstract:: ... Glycosidases have great relevance in polyphenols, since their bioavailability is enhanced by these enzymatic activities. Glycosylated phenolic compounds are deglycosylated either in tissues or by the colonic microbiota. Lactobacillus plantarum is a widespread lactic acid bacteria commonly found in many fermented food products and in the gastrointestinal tract, some strains of which are employed as ...
DOI:: 10.1016/j.jff.2014.01.028
: https://doi.org/10.1016/j.jff.2014.01.028

96. Assessment of antioxidant activity of ethanolic extracts of marjoram (Origanum majorana L.) evaluated by different in vitro methods

Author:: L. F. Serafini; C. A. P. Schmidt; T. L. C. Oldoni; S. T. Carpes; C. W. I. Haminiuk; I. S. Ribeiro
Source:: Acta horticulturae 2018 no.1198 pp. 85-92
ISSN:: 0567-7572
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Origanum majorana; alpha-tocopherol; aluminum; antioxidant activity; antioxidants; butylated hydroxyanisole; butylated hydroxytoluene; carcinogenicity; chronic diseases; diodes; food technology; free radicals; gallic acid; high performance liquid chromatography; in vitro studies; inhibitory concentration 50; iron; linoleic acid; marjoram; peroxidation; quercetin; spectroscopy; spices
Abstract:: ... Natural antioxidants can protect the human body from damage of free radicals and could retard the progress of many chronic diseases. There is a growing interest in the addition of natural antioxidants, especially herbs and spices, in food technology. Due to its possible carcinogenicity, the synthetic antioxidants have been rejected by the consumers. Therefore, the aim of this study was to evaluate ...
DOI:: 10.17660/ActaHortic.2018.1198.16
: https://doi.org/10.17660/ActaHortic.2018.1198.16

97. Assessment of heavy metal ions, essential metal ions, and antioxidant properties of the most common herbal drugs in Indian Ayurvedic hospital: For ensuring quality assurance of certain Ayurvedic drugs

Author:: Vijay Kumar; Simranjeet Singh; Arjun Singh; Varanasi Subhose; Om Prakash
Source:: Biocatalysis and agricultural biotechnology 2019 v.18 pp. 101018
ISSN:: 1878-8181
Subject:: 2,2-diphenyl-1-picrylhydrazyl; aluminum; antioxidant activity; ascorbic acid; aspirin; calcium; copper; flavanoids; gallic acid; heavy metals; herbal medicines; hospitals; iron; magnesium; medicinal properties; metal ions; nitric oxide; protein binding; quality control; quercetin; sodium; spectral analysis; spectroscopy; superoxide anion; zinc
Abstract:: ... During the last few years, World Health Organisation (WHO) has emphasized for the quality control for herbal drugs. The present study was designed and executed to check the heavy metal ions content in the most commonly used Ayurvedic/herbal drugs in Indian Ayurvedic hospitals. Based upon the medicinal applications, we have examined 23 most common and important drug sample contained 7 vati, 5 guggu ...
DOI:: 10.1016/j.bcab.2019.01.056
: https://doi.org/10.1016/j.bcab.2019.01.056

98. Assessment of the Fertilization Capacity of the Aquaculture Sediment for Wheat Grass as Sustainable Alternative Use

Author:: Marian Burducea; Andrei Lobiuc; Lenuta Dirvariu; Eugen Oprea; Stefan Mihaita Olaru; Gabriel-Ciprian Teliban; Vasile Stoleru; Vlad Andrei Poghirc; Irina Gabriela Cara; Manuela Filip; Mariana Rusu; Valtcho D. Zheljazkov; Cristian-Alin Barbacariu
Source:: Plants 2022 v.11 no.5 pp. -
ISSN:: 2223-7747
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Cyprinus carpio; animal welfare; antioxidant activity; biomass; carbon dioxide; chlorophyll; fertilizers; fluorescence; gallic acid; grasses; juices; leaf area; nutrient content; photosynthesis; plant height; quercetin; sediments; wheat
Abstract:: ... Periodic removal of sediment from aquaculture ponds is practiced to maintain their productivity and animal welfare. The recovery of sediment as a plant fertilizer could alleviate the costs of sediment removal. The objective of this study was to test the effects of a dried sediment, extracted from an aquaculture pond used for common carp cultivation, on the growth and physiology of potted wheat gra ...
DOI:: 10.3390/plants11050634
: https://doi.org/10.3390/plants11050634

99. Assessment of the antioxidant activity and genotoxicity of the extracts and isolated glycosides with a new flavonoid from Lotus aegaeus (Gris.) Boiss

Author:: Merve Yuzbasioglu Baran; Güzin Emecen; András Simon; Gábor Tóth; Ayse Kuruuzum-Uz
Source:: Industrial crops and products 2020 v.153 pp. 112590
ISSN:: 0926-6690
Subject:: 2,2-diphenyl-1-picrylhydrazyl; Drosophila melanogaster; Lotus; aerial parts; animal injuries; anti-infective agents; antioxidant activity; butanol; chemical composition; cover crops; drug development; genotoxicity; genotoxicity tests; glucosides; kaempferol; legumes; mass spectrometry; mutagens; nitric oxide; nuclear magnetic resonance spectroscopy; quercetin; saponins; secondary metabolites; somatic mutation; Turkey (country)
Abstract:: ... Chemical composition and genotoxic properties of L. aegaeus (Griseb.) Boiss. which is a member of legumes and used as a cover crop, an antimicrobial agent for animal wounds and forage in Central Anatolia were detected for the first time. Nine secondary metabolites together with a new compound for nature were isolated from the n-butanol extract of Lotus aegaeus (Griseb.) Boiss aerial parts. The str ...
DOI:: 10.1016/j.indcrop.2020.112590
: https://doi.org/10.1016/j.indcrop.2020.112590

100. Assessment of the correlations between reducing power, scavenging DPPH activity and anti-lipid-oxidation capability of phenolic antioxidants

Author:: Yulin Zhang; Yixiao Shen; Yongchao Zhu; Zhimin Xu
Source:: Lebensmittel-Wissenschaft + Technologie 2015 v.63 no.1 pp. 569-574
ISSN:: 0023-6438
Subject:: 2,2-diphenyl-1-picrylhydrazyl; alpha-tocopherol; antioxidant activity; antioxidants; butylated hydroxyanisole; butylated hydroxytoluene; catechin; chlorogenic acid; correlation; gallic acid; hydroquinone; lipid bodies; oxidation; propyl gallate; quercetin; resveratrol; syringic acid
Abstract:: ... Reducing powers, scavenging DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical activities and anti-lipid-oxidation capabilities of synthetic antioxidants, BHA (butylated hydroxyanisole), BHT (butylated hydroxytoluene), PG (propyl gallate), and TBHQ (tert-butylhydroquinone) and natural phenolics α-T (α-tocopherol), CA (chlorogenic acid), GA (gallic acid), QCT (quercetin), RSV (resveratrol), and SA ( ...
DOI:: 10.1016/j.lwt.2015.03.047
: https://doi.org/10.1016/j.lwt.2015.03.047

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1. 1-Methylcyclopropene (1-MCP), storage time, and shelf life and temperature affect phenolic compounds and antioxidant activity of ‘Jonagold’ apple

2. 1H NMR-Based Metabolomics Approach in Investigating the Chemical Profile, Antioxidant and Anti-Inflammatory Activities of Gynura procumbens and Cleome gynandra

3. 3-O-trans-Caffeoylisomyricadiol: A New Triterpenoid from Tamarix nilotica Growing in Saudi Arabia

4. A Report on the In Vitro Antioxidant Properties of Vachellia karroo Leaf Extract: A Plant Widely Grazed by Goats in the Central Eastern Cape of South Africa

5. A Study of Polyphenol Fractions in an Extract from the Brown Alga Thalassiophyllum clathrus (Postels & Ruprecht, 1840) and Their Antioxidant Activities

6. A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

7. A colon-specific delivery system for quercetin with enhanced cancer prevention based on co-axial electrospinning

8. A comparative study of phytochemicals, antioxidant potential and in-vitro DNA damage protection activity of different oat (Avena sativa) cultivars from India

9. A high production of flavonoids and anthraquinones via adventitious root culture of Oplopanax elatus and evaluating antioxidant activity

10. A new estimation of the total flavonoids in silkworm cocoon sericin layer through aglycone determination by hydrolysis-assisted extraction and HPLC-DAD analysis

11. A new exploration of Dregea volubilis flowers: Focusing on antioxidant and antidiabetic properties

12. A new flavonoid glycoside and other chemical constituents from leaves of Rosa davurica and their antioxidant activity

13. A new ultra-high pressure liquid chromatography method for the determination of antioxidant flavonol aglycones in six Lysimachia species

14. A synergic nanoantioxidant based on covalently modified halloysite–trolox nanotubes with intra-lumen loaded quercetin

15. A synergistic combination of Phyllanthus emblica and Alpinia galanga against H2O2-induced oxidative stress and lipid peroxidation in human ECV304 cells

16. Accumulation of ajmalicine and vinblastine in cell cultures is enhanced by endophytic fungi of Catharanthus roseus cv. Icy Pink

17. Acetylcholinesterase inhibitory and antioxidant properties of roots extracts from the Tunisian Scabiosa arenaria Forssk

18. Achyranthes aspera Linn. alleviates cerebral ischemia-reperfusion-induced neurocognitive, biochemical, morphological and histological alterations in Wistar rats

19. Active Volatile Constituents in Perilla frutescens Essential Oils and Improvement of Antimicrobial and Anti-Inflammatory Bioactivity by Fractionation

20. Activity profiling of Serbian and some other European Merlot wines in inflammation and oxidation processes

21. Acylated flavonol glycosides from the flower of Elaeagnus angustifolia L.

22. Adsorption and Recovery of Polyphenolic Flavonoids Using TiO2-Functionalized Mesoporous Silica Nanoparticles

23. Adventitious root cultures from leaf explants of Helicteres angustifolia L. as a novel source for production of natural bioactive compounds

24. Agrobacterium rhizogenes mediated transformation of Ficus carica L. for the efficient production of secondary metabolites

25. An automatic on-line 2,2-diphenyl-1-picrylhydrazyl-high performance liquid chromatography method for high-throughput screening of antioxidants from natural products

26. Analysis of flavonoid content, antioxidant, antimicrobial and antibiofilm activity of in vitro hairy root extract of radish (Raphanus sativus L.)

27. Analysis of rhizome colour content, bioactive compound profiling and ex-situ conservation of turmeric genotypes (Curcuma longa L.) from sub-Himalayan terai region of India

28. Analytical evaluation of phenolic compounds and minerals of Opuntia robusta J.C. Wendl. and Opuntia ficus-barbarica A. Berger

29. Anatomical structure, flavonoid content, and antioxidant activity of Rhodomyrtus tomentosa leaves and fruits on different age and maturity level

30. Angkorensides A and B – Two anti-inflammatory acyl glycosides from Gardenia angkorensis

31. Antagonistic interaction of phenols and alkaloids in Sichuan pepper (Zanthoxylum bungeanum) pericarp

32. Anthemis chia: Biological capacity and phytochemistry

33. Anti-glycating and anti-oxidant compounds from traditionally used anti-diabetic plant Geigeria alata(DC) Oliv. & Hiern.

34. Anti-inflammatory and antioxidant properties of leaf extracts of eleven South African medicinal plants used traditionally to treat inflammation

35. Anti-inflammatory potential of South African medicinal plants used for the treatment of sexually transmitted infections

36. Anti-melanogenic and anti-oxidant activities of ethanol extract of Kummerowia striata: Kummerowia striata regulate anti-melanogenic activity through down-regulation of TRP-1, TRP-2 and MITF expression

37. Anti-obesity and antioxidant activities of selected medicinal plants and phytochemical profiling of bioactive compounds

38. Anti-obesity potential of corn silks: Relationships of phytochemicals and antioxidation, anti-pre-adipocyte proliferation, anti-adipogenesis, and lipolysis induction

39. Anti-proliferative, in vitro antioxidant, and cellular antioxidant activities of the leaf extracts from Polygonum minus Huds: Effects of solvent polarity

40. Anti-radical flavonol glycosides from the aerial parts of Cleome chelidonii L.f.

41. Antiacanthamoebic properties of natural and marketed honey in Pakistan

42. Antibiofilm, antiproliferative, antioxidant and antimutagenic activities of an endophytic fungus Aspergillus fumigatus from Moringa oleifera

43. Antibiofilm, antiquorum sensing and antioxidant activity of secondary metabolites from seeds of Annona senegalensis, Persoon

44. Antidiabetic effects of Syzygium cumini leaves: A non-hemolytic plant with potential against process of oxidation, glycation, inflammation and digestive enzymes catalysis

45. Antifungal activity of mango kernel polyphenols on mango fruit infected by anthracnose

46. Antileishmanial and antioxidant potential of fractions and isolated compounds from Nectandra cuspidata

47. Antimicrobial and antioxidant activities of defatted Moringa oleifera seed meal extract obtained by ultrasound-assisted extraction and application as a natural antimicrobial coating for raw chicken sausages

48. Antimicrobial and antioxidant activity of Garcinia brasiliensis extracts

49. Antioxidant Activity and Determination of Phenolic Compounds from Eugenia involucrata DC. Fruits by UHPLC-MS/MS

50. Antioxidant Activity, Antibacterial Activity and Chemical Composition of Essential Oil of Artemisia vulgaris L. Leaves from Northeast India

51. Antioxidant Capacity and Phenolic and Sugar Profiles of Date Fruits Extracts from Six Different Algerian Cultivars as Influenced by Ripening Stages and Extraction Systems

52. Antioxidant Capacity of Fractionated Extract and Structural Elucidation of Isolated Compounds from Leaf Extract of Hydrocotyl bonariensis Comm. Exlam

53. Antioxidant Compounds, Nutritional Quality and Colour of Two Strawberry Genotypes from Fragaria × Ananassa

54. Antioxidant Effects of Four Heartwood Extractives on Midgut Enzyme Activity in Heterotermes indicola (Blattodea: Rhinotermitidae)

55. Antioxidant Japanese plum (Prunus salicina) microparticles with potential for food preservation

56. Antioxidant Properties and Antibacterial Effects of Eucalyptus camaldulensis Ethanolic Leaf Extract on Biofilm Formation, Motility, Hemolysin Production, and Cell Membrane of the Foodborne Pathogen Listeria monocytogenes

57. Antioxidant ability of Chenopodium formosanum extracted using an ethanol–ammonium sulfate two-phase system

58. Antioxidant activities and contents of free, esterified and insoluble-bound phenolics in 14 subtropical fruit leaves collected from the south of China

59. Antioxidant activities and phenolic profile of Baccharis trimera, a commonly used medicinal plant from Brazil

60. Antioxidant activities and phytochemicals of polar, semi-polar, and nonpolar extracts of used and unused parts of Carica papaya fruit

61. Antioxidant activities, polyphenol, flavonoid, and amino acid contents in peanut shell

62. Antioxidant activity and phenolic compounds in 10 selected herbs from Vrujci Spa, Serbia

63. Antioxidant activity index (AAI) by the 2,2-diphenyl-1-picrylhydrazyl method

64. Antioxidant activity of hopeaphenol isolated from Shorea roxburghii stem bark extract

65. Antioxidant and Anti-Proliferative Properties of Hagenia abyssinica Roots and Their Potentially Active Components

66. Antioxidant and Antitumor Activities of Novel Quercetin-Loaded Electrospun Cellulose Acetate/Polyethylene Glycol Fibrous Materials

67. Antioxidant and anti-inflammatory activities of Arbutus unedo aqueous extract

68. Antioxidant and antibacterial study of 10 flavonoids revealed rutin as a potential antibiofilm agent in Klebsiella pneumoniae strains isolated from hospitalized patients

69. Antioxidant and antifungal activities of Smilax campestris Griseb. (Smilacaceae)

70. Antioxidant and antifungal activity of carnauba wax powder extracts