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You searched for: Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term 2,2-diphenyl-1-picrylhydrazyl Remove constraint Subject term: 2,2-diphenyl-1-picrylhydrazyl Subject term antioxidant activity Remove constraint Subject term: antioxidant activity Subject term quercetin Remove constraint Subject term: quercetin
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1. 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

2. African eggplant (Solanum anguivi Lam.) fruit with bioactive polyphenolic compounds exerts in vitro antioxidant properties and inhibits Ca2+-induced mitochondrial swelling

Author:
Olusola Olalekan Elekofehinti; Jean Paul Kamdem; Aline Augusti Bolingon; Margareth Linde Athayde; Seeger Rodrigo Lopes; Emily Pansera Waczuk; Ige Joseph Kade; Isaac Gbadura Adanlawo; Joao Batista Teixeira Rocha
Source:
Asian Pacific Journal of Tropical Biomedicine 2013 v.3 pp. 757-766
ISSN:
2221-1691
Subject:
2,2-diphenyl-1-picrylhydrazyl; Solanum anguivi; Solanum macrocarpon; antioxidant activity; brain; caffeic acid; calcium; chelation; chlorogenic acid; food industry; free radical scavengers; fruits; gallic acid; high performance liquid chromatography; inhibitory concentration 50; iron; lipid peroxidation; lipids; liver; membrane potential; mitochondria; mitochondrial membrane; oxidative stress; permeability; polyphenols; quercetin; rutin
Abstract:
... To evaluate the antioxidant and radical scavenging activities of Solanum anguivi fruit (SAG) and its possible effect on mitochondrial permeability transition pore as well as mitochondrial membrane potential (ΔΨm) isolated from rat liver.Antioxidant activity of SAG was assayed by using 2,2-diphenyl-1-picrylhydrazyl (DPPH), reducing power, iron chelation and ability to inhibit lipid peroxidation in ...
DOI:
10.1016/S2221-1691(13)60152-5
PubMed:
24075339
PubMed Central:
PMC3761133

3. Analysis of phytochemical profile of Terminalia arjuna bark extract with antioxidative and antimicrobial properties

Author:
Shreya Mandal; Arpita Patra; Animesh Samanta; Suchismita Roy; Arpita Mandal; Tapasi Das Mahapatra; Shrabani Pradhan; Koushik Das; Dilip Kumar Nandi
Source:
Asian Pacific Journal of Tropical Biomedicine 2013 v.3 pp. 960-966
ISSN:
2221-1691
Subject:
2,2-diphenyl-1-picrylhydrazyl; Gram-negative bacteria; Gram-positive bacteria; Terminalia arjuna; active ingredients; agar; aluminum chloride; antimicrobial properties; antioxidant activity; bioassays; chemical constituents of plants; colorimetry; free radical scavengers; glycosides; lactones; methanol; phytosterols; quercetin; screening; tannins; thin layer chromatography
Abstract:
... To investigate phytochemical screening, antimicrobial activity and qualitative thin layer chromatographic separation of flavonoid components, antioxidant activity and total flavonoid compound of Terminalia arjuna.For phytochemical screening, some common and available standard tests were done. Antimicrobial bioassay was done through agar well diffusion method. Detection of antioxidant activity and ...
DOI:
10.1016/S2221-1691(13)60186-0
PubMed:
24093787
PubMed Central:
PMC3805097

4. 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

5. Antioxidant properties of aqueous extracts of unripe Musa paradisiaca on sodium nitroprusside induced lipid peroxidation in rat pancreas in vitro

Author:
Sidiqat Adamson Shodehinde; Ganiyu Oboh
Source:
Asian Pacific Journal of Tropical Biomedicine 2013 v.3 pp. 449-457
ISSN:
2221-1691
Subject:
2,2-diphenyl-1-picrylhydrazyl; 4-hydroxybenzoic acid; Musa paradisiaca; antioxidant activity; apigenin; ascorbic acid; caffeic acid; capsaicin; disease prevention; flour; gas chromatography; glycitein; hydroxyl radicals; iron; lipid peroxidation; luteolin; myricetin; nitroprusside; pancreas; pastries; plant extracts; polyphenols; quercetin
Abstract:
... To evaluate and compare antioxidant activities of the aqueous extracts of unripe plantain (Musa paradisiaca), assess their inhibitory action on sodium nitroprusside induced lipid peroxidation in rat pancreas in vitro and to characterize the main phenolic constituents of the plantain products using gas chromatography analysis.Aqueous extracts of plantain products (raw, elastic pastry, roasted and b ...
DOI:
10.1016/S2221-1691(13)60095-7
PubMed:
23730557
PubMed Central:
PMC3644572

6. Characterization of flavonoids from Dryopteris erythrosora and evaluation of their antioxidant, anticancer and acetylcholinesterase inhibition activities

Author:
Jianguo Cao; Xian Xia; Xuefei Chen; Jianbo Xiao; Quanxi Wang
Source:
Food and chemical toxicology 2013 v.51 pp. 242-250
ISSN:
0278-6915
Subject:
myricetin; quercitrin; foods; acetylcholinesterase; dose response; cytotoxicity; 2,2-diphenyl-1-picrylhydrazyl; toxicology; quercetin; ferns and fern allies; rutin; superoxide anion; antioxidant activity; Dryopteris erythrosora; anticarcinogenic activity
Abstract:
... The profiles and bioactivities of flavonoids extracted from Dryopteris erythrosora were investigated. The total flavonoid content in full plant of D. Erythrosora is about 14.33%. The main flavonoids in D. Erythrosora were identified as gliricidin 7-O-hexoside, apigenin7-O-glucoside, quercetin 7-O-rutinoside, quercetin 7-O-galactoside, keampferol 7-O-gentiobioside, keampferol-3-O-rutinoside, myrice ...
DOI:
10.1016/j.fct.2012.09.039

7. Chemical Composition and Antioxidant Activity of Algerian Juniperus phoenicea L. Extracts

Author:
Fouad Menaceur; Ahmed Benchabane; Mohamed Hazzit; Aoumeur Baaliouamer
Source:
Journal of Biologically Active Products from Nature 2013 v.3 no.1 pp. 87-96
ISSN:
2231-1874
Subject:
2,2-diphenyl-1-picrylhydrazyl; Juniperus phoenicea; alpha-pinene; antioxidant activity; antioxidants; butylated hydroxytoluene; chemical composition; essential oils; ethanol; gallic acid; gas chromatography-mass spectrometry; hydrodistillation; leaves; microwave treatment; quercetin; small fruits; solvents
Abstract:
... Essential oils of Algerian Juniperus phoenicea L. obtained from leaves and berries by hydrodistillation (HD) and from berries by Solvent Free Microwave Assisted Extraction (SFMAE) were investigated using both capillary GC and GC-MS techniques. The monoterpene hydrocarbons constituted the most prominent group of constituents (43.2-86.5 %) in the three essential oils with α-pinene (34.4-80.8 %) as t ...
DOI:
10.1080/22311866.2013.782754

8. Effects of ionic radius of redox-inactive bio-related metal ions on the radical-scavenging activity of flavonoids evaluated using photometric titration

Author:
Tsukasa Waki; Shigeki Kobayashi; Ken-ichiro Matsumoto; Toshihiko Ozawa; Tadashi Kamada; Ikuo Nakanishi
Source:
Chemical communications 2013 v.49 no.84 pp. 9842-9844
ISSN:
1364-548X
Subject:
2,2-diphenyl-1-picrylhydrazyl; aluminum; antioxidant activity; calcium; chemical reactions; kaempferol; magnesium; metal ions; photometry; quercetin; sodium; titration
Abstract:
... Mg²⁺ enhanced the scavenging activity of (+)-catechin and quercetin against the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH˙), while Al³⁺ decreased their activity. Such effects of Mg²⁺ and Al³⁺ were not observed for kaempferol. Na⁺ and Ca²⁺ with large ionic radii showed little effect on the DPPH˙-scavenging activity of these three flavonoids. ...
DOI:
10.1039/c3cc45124k

9. Enhancement of anti arthritic effect of quercetin using thioglycolic acid-capped cadmium telluride quantum dots as nanocarrier in adjuvant induced arthritic Wistar rats

Author:
R. Jeyadevi; T. Sivasudha; A. Rameshkumar; D. Arul Ananth; G. Smilin Bell Aseervatham; K. Kumaresan; L. Dinesh Kumar; S. Jagadeeswari; R. Renganathan
Source:
Colloids and Surfaces B: Biointerfaces 2013 v.112 pp. 255-263
ISSN:
0927-7765
Subject:
2,2-diphenyl-1-picrylhydrazyl; C-reactive protein; antioxidant activity; arthritis; cadmium; cartilage; catalase; colloids; drugs; erythrocyte count; erythrocyte sedimentation rate; erythrocytes; free radical scavengers; glutathione; glutathione peroxidase; histology; inflammation; laboratory animals; leukocytes; lipid peroxidation; nanocarriers; nitric oxide; quantum dots; quercetin; rats; superoxide anion; superoxide dismutase
Abstract:
... In this present study, we investigated thio glycolic acid-capped cadmium telluride quantum dots (TGA-CdTe QDs) as nano carrier to study the antiarthritic activity of quercetin on adjuvant induced arthritic Wistar rats. The free radical scavenging activity of QDs-QE complex was evaluated by 2,2′-azinobis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), nitric ox ...
DOI:
10.1016/j.colsurfb.2013.07.065

10. Essential Oil Composition, Total Phenolic Content, Antioxidant Activity and Antifungal Properties of Iranian Thymus daenensis subsp. daenensis Celak. as in Influenced by Ontogenetical Variation

Author:
Ardalan Alizadeh; Omid Alizadeh; Golnaz Amari; Mahdi Zare
Source:
Journal of essential oil-bearing plants 2013 v.16 no.1 pp. 59-70
ISSN:
0976-5026
Subject:
2,2-diphenyl-1-picrylhydrazyl; Alternaria solani; Fusarium solani; Thanatephorus cucumeris; aerial parts; antifungal properties; antioxidant activity; beta-caryophyllene; carvacrol; chemical composition; distillation; essential oils; flowering; free radical scavengers; fungi; gas chromatography; harvesting; mass spectrometry; oils; p-cymene; quercetin; thymol
Abstract:
... The chemical composition of essential oil isolated by hydro distillation from the aerial parts of Thymus daenensis subsp. daenensis Celak., at different harvest times were determined using Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC-MS). Twenty six components were identified in Thymus daenensis essential oils. The main components of the oil were thymol (66.62-71.49 %), p-c ...
DOI:
10.1080/0972060X.2013.764190

11. Essential Oil Constituents, Antioxidant and Antimicrobial Activities of Salvia virgata Jacq. from Iran

Author:
Ardalan Alizadeh
Source:
Journal of essential oil-bearing plants 2013 v.16 no.2 pp. 172-182
ISSN:
0976-5026
Subject:
2,2-diphenyl-1-picrylhydrazyl; Candida albicans; Salvia; Staphylococcus aureus; antimicrobial properties; antioxidant activity; beta-caryophyllene; chemical composition; essential oils; free radical scavengers; gas chromatography; inhibitory concentration 50; mass spectrometry; oils; ontogeny; pathogens; quercetin; sabinene; Iran
Abstract:
... The chemical composition of essential oil isolated by hydrodistillation from the aerial part of Salvia virgata under different ontogenesis (pre-flowering and full-flowering) conditions were determined using Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS). Twenty nine constituents were identified in S. virgata essential oils under different ontogenesis conditions that repre ...
DOI:
10.1080/0972060X.2013.793974

12. Phenolic composition and antioxidant capacities of ten Algerian date (Phoenix dactylifera L.) cultivars: A comparative study

Author:
Zahia Benmeddour; Emira Mehinagic; Dominique Le Meurlay; Hayette Louaileche
Source:
Journal of functional foods 2013 v.5 no.1 pp. 346-354
ISSN:
1756-4646
Subject:
cultivars; colorimetry; proanthocyanidins; caffeic acid; hydrogen peroxide; 2,2-diphenyl-1-picrylhydrazyl; high performance liquid chromatography; luteolin; quercetin; antioxidant activity; rutin; Phoenix dactylifera
Abstract:
... Phenolic compounds and antioxidant capacities of ten Algerian date (Phoenix dactylifera L.) cultivars were investigated. The total phenolic, flavonoid, flavonol and condensed tannin contents of the different cultivars were measured using colorimetric methods. Free phenolic acid and flavonoid profiles of the date cultivars were analyzed by high performance liquid chromatography with diode array det ...
DOI:
10.1016/j.jff.2012.11.005

13. Phenolic composition, antioxidant and antimicrobial activities of free and bound phenolic extracts of Moringa oleifera seed flour

Author:
R.S. Govardhan Singh; Pradeep S. Negi; C. Radha
Source:
Journal of functional foods 2013 v.5 no.4 pp. 1883-1891
ISSN:
1756-4646
Subject:
2,2-diphenyl-1-picrylhydrazyl; Moringa oleifera; antibacterial properties; antioxidant activity; bacteria; caffeic acid; catechin; cinnamic acid; colorimetry; epicatechin; ferulic acid; flour; free radical scavengers; gallic acid; high performance liquid chromatography; inhibitory concentration 50; minimum inhibitory concentration; p-coumaric acid; pharmaceutical industry; protocatechuic acid; quercetin; seeds; vanillin
Abstract:
... Phenolic compounds, antioxidant and antibacterial activities of defatted Moringa oleifera seed flour (DMF) were investigated. The total phenolic and flavonoid contents were measured using colorimetric methods. Free phenolic acid and flavonoid profiles were analyzed by high performance liquid chromatography, while antioxidant capacities were evaluated using scavenging assays of 1,1-diphenyl-2-picry ...
DOI:
10.1016/j.jff.2013.09.009

14. Phytochemical investigation and In vitro antioxidant activity of an indigenous medicinal plant Alpinia nigra B.L. Burtt

Author:
Suprava Sahoo; Goutam Ghosh; Debajyoti Das; Sanghamitra Nayak
Source:
Asian Pacific Journal of Tropical Biomedicine 2013 v.3 pp. 871-876
ISSN:
2221-1691
Subject:
2,2-diphenyl-1-picrylhydrazyl; Alpinia nigra; antioxidant activity; chemical constituents of plants; dietary supplements; free radical scavengers; functional foods; gallic acid; hydrogen peroxide; in vitro studies; indigenous species; inhibitory concentration 50; medicinal plants; methanol; nitric oxide; quercetin
Abstract:
... To investigate antioxidant potential of methanol extract of Alpinia nigra leaves.The study was done by using various In vitro methods such as 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS), nitric oxide and hydrogen peroxide radical scavenging assays. Phytochemical constituents, total phenolic content and total flavonoid content of the extract at ...
DOI:
10.1016/S2221-1691(13)60171-9

15. Phytochemical screening and free radical scavenging activity of Citrullus colocynthis seeds extracts

Author:
Nabila Benariba; Rabeh Djaziri; Wafaa Bellakhdar; Nacera Belkacem; Marcel Kadiata; Willy J. Malaisse; Abdullah Sener
Source:
Asian Pacific Journal of Tropical Biomedicine 2013 v.3 pp. 35-40
ISSN:
2221-1691
Subject:
2,2-diphenyl-1-picrylhydrazyl; Citrullus colocynthis; alkaloids; antioxidant activity; butanol; catechin; chemical constituents of plants; coumarins; ethyl acetate; free radical scavengers; free radicals; gallic acid; inhibitory concentration 50; myricetin; plant extracts; polyphenols; quercetin; quinones; reducing sugars; screening; seeds; tannins; terpenoids; thin layer chromatography
Abstract:
... To study the phytochemical screening of different extracts from Citrullus colocynthis (C. colocynthis) seeds extracts and to assess their antioxidant activity on the DPPH free radical scavenging.Phytochemical screening, total content of polyphenols and flavonoids of C. colocynthis seeds extracts, including a crude aqueous extract (E1), a defatted aqueous extract (E2), a hydromethanolic extract (HM ...
DOI:
10.1016/S2221-1691(13)60020-9
PubMed:
23570014
PubMed Central:
PMC3609396

16. Total Phenolic Content and Antioxidant Capacity of Germinated, Popped, and Cooked Huauzontle (Chenopodium berlandieri spp. nuttalliae) Seeds

Author:
Martinez L. Chaires; Vargas M. A. Perez; del Angel A. I. Cantor; Bermudez F. Cruz; Avalos H. A. Jimenez
Source:
Cereal chemistry 2013 v.90 no.3 pp. 263-268
ISSN:
0009-0352
Subject:
2,2-diphenyl-1-picrylhydrazyl; Chenopodium berlandieri; antioxidant activity; antioxidants; gallic acid; heat treatment; hydrochloric acid; ingredients; methanol; quercetin; seeds; solvents
Abstract:
... Raw, germinated, popped, and cooked huauzontle (Chenopodium berlandieri spp. nuttalliae) seeds were analyzed for the contents of phenolics extracted with water (WE), methanol, 1:1 (v/v) methanol/water (MWE), and 1.2M HCl in 1:1 (v/v) methanol/water (HMWE); radical scavenging capacity measured by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (A ...
DOI:
10.1094/CCHEM-03-12-0022-R