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You searched for: Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term antioxidant activity Remove constraint Subject term: antioxidant activity Subject term quercetin Remove constraint Subject term: quercetin
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1. 089 Inhibitory effects on low temperature injury by flavonoids (glycosides)

Author:
F. Kato; N. Matsuo; S. Fujikawa
Source:
Cryobiology 2013 v.67 no.3 pp. 423
ISSN:
0011-2240
Subject:
antioxidant activity; cold; embryo (animal); fibroblasts; glycosides; human umbilical vein endothelial cells; humans; liquids; mice; neoplasm cells; parenchyma (plant tissue); quercetin; supercooling; temperature; trees; winter
Abstract:
... Our previous studies showed that xylem parenchyma cells (XPCs) in trees, which adapt to winter cold by deep supercooling, contained several kinds of supercooling promoting substances [Kasuga et al., Cryobiology, 55 (2007) 305–314; Wang et al., Planta, 235 (2012) 747–759]. It is suggested that the presence of supercooling-promoting substances keeps liquid state of water in XPCs near −40°C. In the p ...
DOI:
10.1016/j.cryobiol.2013.09.095

2. A new flavanone and other constituents from the rhizomes of Cyperus rotundus and their antioxidant activities

Author:
Zhongliu Zhou; Chunyan Fu
Source:
Chemistry of natural compounds 2013 v.48 no.6 pp. 963-965
ISSN:
0009-3130
Subject:
Cyperus rotundus; antioxidant activity; free radicals; kaempferol; luteolin; quercetin; rhizomes
Abstract:
... A new flavanone, for which the structure 7,8-dihydroxy-5,6-methylenedioxyflavone (1) was established, and five known compounds, quercetin (2), kaempferol (3), luteolin (4), ginkgetin (5), and isoginkgetin (6), were isolated from the rhizomes of Cyperus rotundus L. The new compound 1 showed inhibitory activity in superoxide radical scavenging assay with IC₅₀ value of 3.1 μM. Compounds 2–6 exhibited ...
DOI:
10.1007/s10600-013-0439-x

3. 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

4. Activity-guided isolation of antioxidants from the roots of Rheum emodi

Author:
Pradeep Pratap Singh; Ambika; S.M.S. Chauhan
Source:
Natural product research 2013 v.27 no.10 pp. 946-949
ISSN:
1478-6427
Subject:
Rheum australe; antioxidant activity; epicatechin; eugenol; free radical scavengers; gallic acid; purification methods; quercetin; roots; rutin
Abstract:
... An activity-guided isolation and purification process was used to identify the DPPH free radical scavenging components of Rheum emodi. The activity-guided isolation revealed that eugenol, gallic acid, quercetin, rutin, epicatechin, desoxyrhapontigenin, rhapontigenin and mesopsin are the major phenolic compounds responsible for the antioxidant activity of the roots of R. emodi. ...
DOI:
10.1080/14786419.2012.682994

5. 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

6. Alternanthera paronychioides protects pancreatic β-cells from glucotoxicity by its antioxidant, antiapoptotic and insulin secretagogue actions

Author:
Chi-Hao Wu; Hsin-Tzu Hsieh; Jer-An Lin; Gow-Chin Yen
Source:
Food chemistry 2013 v.139 no.1-4 pp. 362-370
ISSN:
0308-8146
Subject:
caspase-9; homeotic genes; glucose; Alternanthera; reactive oxygen species; ferulic acid; gene expression; quercetin; insulin; antioxidant activity; ethanol; caspase-3
Abstract:
... The antioxidant and antiglucotoxic effects of Alternanthera paronychioides on pancreatic β-cell were investigated. Antioxidant assays demonstrated that ethanol extracts of A. paronychioides (EEAP) exhibited the highest antioxidant activity, which also had the highest phenolic and flavonoid contents. Two major polyphenolics, ferulic acid and quercetin, were identified from EEAP by HPLC-DAD. Effects ...
DOI:
10.1016/j.foodchem.2013.01.026
PubMed:
23561118

7. 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

8. Antigenotoxic Effect of Tartary (Fagopyrum tataricum) and Common (Fagopyrum esculentum) Buckwheat Flour

Author:
Vogrinčič Maja; Kreft Ivan; Filipič Metka; Žegura Bojana
Source:
Journal of medicinal food 2013 v.16 no.10 pp. 944-952
ISSN:
1557-7600
Subject:
DNA damage; Fagopyrum esculentum; Fagopyrum tataricum; active ingredients; antioxidant activity; buckwheat; buckwheat flour; health promotion; hepatoma; humans; quercetin; reversed-phase high performance liquid chromatography; rutin
Abstract:
... The aim of our work was to determine and to compare the possible antigenotoxic effect of methanolic extracts of common buckwheat (CB) and Tartary buckwheat (TB) flour, containing naturally present rutin (R), and quercetin (Q), and of R and Q in chemical form, against tert-butyl hydroperoxide (t-BOOH) induced DNA damage in human hepatoma cell line (HepG2). R and Q content of CB and TB flour extract ...
DOI:
10.1089/jmf.2012.0266

9. Antioxidant Activity and Mechanism in Flower of Hylocereus Undatus (Haw.) Britt. Et Rose

Author:
Li Xican; Gao Yaoxiang; Han Weijuan; Lin Jing; Hu Qiuping; Chen Dongfeng
Source:
Acta biologica Cracoviensia 2013 v.55 no.1 pp. 80-85
ISSN:
1898-0295
Subject:
Hylocereus undatus; antioxidant activity; antioxidants; bioactive compounds; chelation; flowers; functional foods; hydrogen; kaempferol; phenolic compounds; quercetin; China
Abstract:
... Hylocereus undatus flower is commonly used as food or for medicinal purposes in south China. To study its antioxidant activity and mechanism we used antioxidant and chemical assays to compare two commercial samples from different locations (Shenjing, Qixing). The difference in antioxidant levels corresponded with differences in chemical content (including total phenolics, total flavonoids, kaempfe ...
DOI:
10.2478/abcsb-2013-00014

10. Antioxidant Activity of the Essential Oil and Oleoresin of Zingiber Officinale Roscoe as Affected by Chemical Environment

Author:
Yuva Bellik; Fadila Benabdesselam; Abdelhanine Ayad; Zina Dahmani; Laid Boukraa; Abderrahim Nemmar; Mokrane Iguer-Ouada
Source:
International journal of food properties 2013 v.16 no.6 pp. 1304-1313
ISSN:
1094-2912
Subject:
Zingiber officinale; antioxidant activity; essential oils; free radical scavengers; ginger; hydrogen peroxide; phenols; quercetin; solubility
Abstract:
... Three different biochemical test systems were chosen based on their solubility to study the antioxidant activity of ginger extracts. Reducing power and DPPH. scavenging activity tests were considered to produce hydrophilic environments and the H₂O₂ test was considered as creating a lipophilic environment. The average yields were 10.23 ± 1.02% and 0.48 ± 0.19% for oleoresin and essential oil, respe ...
DOI:
10.1080/10942912.2011.584257

11. Antioxidant Lignans and Chromone Glycosides from Eurya japonica

Author:
Yang Kuo Li-Ming; Zhang Li-Jie; Huang Hung-Tse; Lin Zhi-Hu; Liaw Chia-Ching; Cheng Hui-Ling; Lee Kuo-Hsiung; Morris-Natschke Susan L.; Kuo Yao-Haur; Ho Hsiu-O
Source:
Journal of natural products 2013 v.76 no.4 pp. 580-587
ISSN:
1520-6025
Subject:
Eurya japonica; alpha-tocopherol; antioxidant activity; antioxidants; circular dichroism spectroscopy; glycosides; lignans; nuclear magnetic resonance spectroscopy; quercetin; stems
Abstract:
... Four new 8,8′,7,2′-lignans, (+)-ovafolinin B-9′-O-β-d-glucopyranoside (1), (−)-ovafolinin B-9′-O-β-d-glucopyranoside (2), (+)-ovafolinin E-9′-O-β-d-glucopyranoside (3), and (−)-ovafolinin E-9′-O-β-d-glucopyranoside (4), two neolignans, eusiderin N (5) and (7S,8R)-3,5,5′-trimethoxy-4′,7-epoxy-8,3′-neolignan-9,9′-diol-4-O-β-d-xylopyranoside (6), and two new chromone glycosides, 5,7-dihydroxy-4H-chro ...
DOI:
10.1021/np3007638

12. Antioxidant activity and HPLC analysis of polyphenol‐enriched extracts from industrial apple pomace

Author:
Xuelian Bai; Huawei Zhang; Shuang Ren
Source:
Journal of the science of food and agriculture 2013 v.93 no.10 pp. 2502-2506
ISSN:
0022-5142
Subject:
antioxidant activity; apple cider; apple pomace; apples; caffeic acid; chlorogenic acid; cinnamic acid; cultivars; ethanol; free radical scavengers; gallic acid; high performance liquid chromatography; ingredients; polyphenols; quercetin; resins
Abstract:
... BACKGROUND: Phenolic compounds are the predominant ingredients in apple pomace. However, polyphenols from industrial apple pomace, which usually consists of several cultivars, have not been studied in detail. The present work focused on the antioxidant assay and HPLC analysis of polyphenol‐enriched extracts from industrial apple pomace. RESULTS: Six fractions of apple polyphenols, API to APVI, wer ...
DOI:
10.1002/jsfa.6066
PubMed:
23460126

13. Antioxidant activity and polyphenol content of cherry stem (Cerasus avium L.) determined by LC–MS/MS

Author:
Ercan Bursal; Ekrem Köksal; İlhami Gülçin; Gökhan Bilsel; Ahmet C. Gören
Source:
Food research international 2013 v.51 no.1 pp. 66-74
ISSN:
0963-9969
Subject:
4-hydroxybenzoic acid; Prunus avium; alpha-tocopherol; antioxidant activity; ascorbic acid; caffeic acid; cherries; copper; ellagic acid; ethanol; ferulic acid; free radical scavengers; gallic acid; high performance liquid chromatography; ions; iron; p-coumaric acid; pyrogallol; quercetin; syringic acid; tandem mass spectrometry; vanillin
Abstract:
... In this study, the antioxidant and antiradical properties of cherry stem (Cerasus avium L.) were examined. The ferric thiocyanate method, ferric ion (Fe3+) and cupric ion (Cu2+) reducing assays and ferrous ions (Fe3+) chelating assay were used in order to measure the antioxidant activity of the plant. Also, its antiradical activity was measured by 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scav ...
DOI:
10.1016/j.foodres.2012.11.022

14. Antioxidant and Antihemolytic Activities of Ethanolic Extract of Flowers, Leaves, and Stems of Hyssopus officinalis L. Var. angustifolius

Author:
Heshmatollah Alinezhad; Razieh Azimi; Mahboobeh Zare; Mohammad Ali Ebrahimzadeh; Shahram Eslami; Seyed Fazel Nabavi; Seyed Mohammad Nabavi
Source:
International journal of food properties 2013 v.16 no.5 pp. 1169-1178
ISSN:
1094-2912
Subject:
Hyssopus officinalis; antioxidant activity; flowers; free radical scavengers; gallic acid; hemolysis; hydrogen; hydrogen peroxide; in vitro studies; inhibitory concentration 50; iron; leaves; linoleic acid; models; quercetin; stems
Abstract:
... In this study, antioxidant and antihemolytic activities of ethanolic extract of flowers, leaves, and stems of Hyssopus officinalis L. Var. angustifolius were investigated employing different in vitro assay systems. Extracts showed good antioxidant activity. IC₅₀ for 1,1-diphenyl-2-picryl hydrazyl radical-scavenging activity were 148.8 ± 4.31 μg mL⁻¹ for flowers, 79.9 ± 2.63 μg mL⁻¹ for stems, and ...
DOI:
10.1080/10942912.2011.578319

15. Antioxidant and anti-inflammatory effects of quercetin in functional and morphological alterations in streptozotocin-induced diabetic rats

Author:
R.M. Maciel; M.M. Costa; D.B. Martins; R.T. França; R. Schmatz; D.L. Graça; M.M.M.F. Duarte; C.C. Danesi; C.M. Mazzanti; M.R.C. Schetinger; F.C. Paim; H.E. Palma; F.H. Abdala; N. Stefanello; C.K. Zimpel; D.V. Felin; S.T.A. Lopes
Source:
Research in veterinary science 2013 v.95 no.2 pp. 389-397
ISSN:
0034-5288
Subject:
anti-inflammatory activity; anti-inflammatory agents; antioxidant activity; antioxidants; diabetes mellitus; ethanol; free radicals; hyperglycemia; oxidative stress; quercetin; rats; streptozotocin
Abstract:
... The aim of this study was to investigate functional and morphological alterations caused by oxidative stress in streptozotocin (STZ)-induced diabetic rats and to evaluate the antioxidant effect of quercetin (QUE) in this disease. One hundred and thirty male Wistar rats, it were randomly distributed in 10 different experimental groups, with ten animals per group: Control Saline (CS), Control Ethano ...
DOI:
10.1016/j.rvsc.2013.04.028
PubMed:
23706762

16. Antioxidant and antimicrobial properties of phenolic rich fraction of Seabuckthorn (Hippophae rhamnoides L.) leaves in vitro

Author:
M.S. Yogendra Kumar; R.J. Tirpude; D.T. Maheshwari; Anju Bansal; Ksipra Misra
Source:
Food chemistry 2013 v.141 no.4 pp. 3443-3450
ISSN:
0308-8146
Subject:
gallic acid; myricetin; Staphylococcus aureus; antibacterial properties; nitric oxide; Hippophae rhamnoides; Streptococcus pneumoniae; quercetin; reversed-phase high performance liquid chromatography; rutin; antioxidant activity; Shigella dysenteriae; Salmonella Typhi; leaves; Escherichia coli
Abstract:
... Phenolic rich fraction (PRF) from Seabuckthorn leaves was prepared by sequential fractionation. Total phenolic content of PRF estimated as gallic acid equivalent was found to be 319.33±7.02mg/g of PRF. Its major constituents gallic acid, rutin, quercetin-3-galactoside, quercetin-3-glucoside, myricetin, quercetin, kaempferol and isorhamnetin, were found in the range of 1.551–196.89mg/g of PRF as de ...
DOI:
10.1016/j.foodchem.2013.06.057
PubMed:
23993505

17. Antioxidant and hepatoprotective effects of Schisandra chinensis pollen extract on CCl4-induced acute liver damage in mice

Author:
Ni Cheng; Naiyan Ren; Hui Gao; Xingsheng Lei; Jianbin Zheng; Wei Cao
Source:
Food and chemical toxicology 2013 v.55 pp. 234-240
ISSN:
0278-6915
Subject:
Schisandra chinensis; alanine transaminase; antioxidant activity; aspartate transaminase; blood serum; carbon tetrachloride; free radical scavengers; glutathione peroxidase; hepatoprotective effect; hepatotoxicity; hesperetin; histopathology; in vivo studies; lipid peroxidation; liver; malondialdehyde; mice; phenolic compounds; pollen; quercetin; rutin; superoxide dismutase; toxicology
Abstract:
... The aim of the present study was to investigate the antioxidant and hepatotective effects of Schisandra chinensis pollen extract (SCPE) on CCl4-induced acute liver damage in mice. Total phenolic content, total flavonoid content, individual phenolic compounds and antioxidant activities (1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, chelating activity, and reducing power assay) w ...
DOI:
10.1016/j.fct.2012.11.022

18. Antioxidant capacity, polyphenolic content and tandem HPLC–DAD–ESI/MS profiling of phenolic compounds from the South American berries Luma apiculata and L. chequén

Author:
Mario J. Simirgiotis; Jorge Bórquez; Guillermo Schmeda-Hirschmann
Source:
Food chemistry 2013 v.139 no.1-4 pp. 289-299
ISSN:
0308-8146
Subject:
American Indians; Myrtaceae; aerial parts; anthocyanins; antioxidant activity; drugs; foods; fruits; ionization; isorhamnetin; mass spectrometry; myricetin; quercetin; rapid methods; small fruits; tannins; trees; Argentina; Chile
Abstract:
... Native Myrtaceae fruits were gathered by South American Amerindians as a food source. At present, there is still some regional consume of the small berries from trees belonging to genus Luma that occurs in southern Chile and Argentina. The aerial parts and berries from Luma apiculata and Luma chequen were investigated for phenolic constituents and antioxidant capacity. A high performance electrosp ...
DOI:
10.1016/j.foodchem.2013.01.089
PubMed:
23561108

19. 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

20. Antioxidant effect of astragalin isolated from the leaves of Morus alba L. against free radical-induced oxidative hemolysis of human red blood cells

Author:
Jiwon Choi; Hyun Ju Kang; Sung Zoo Kim; Tae Oh Kwon; Seung-Il Jeong; Seon Il Jang
Source:
Archives of pharmacal research 2013 v.36 no.7 pp. 912-917
ISSN:
0253-6269
Subject:
Morus alba; active oxygen species; antioxidant activity; antioxidants; dose response; erythrocytes; glutathione; hemolysis; high performance liquid chromatography; humans; kaempferol; leaves; medicinal plants; methanol; mulberries; oxidation; protective effect; quercetin
Abstract:
... We evaluated the antioxidant properties of mulberry leaves extract (MLE) and flavonoids isolated from MLE. MLE was prepared by extraction with methanol. Flavonoids were analyzed by high-performance liquid chromatography. Oxidative hemolysis of normal human red blood cells (RBCs) was induced by the aqueous peroxyl radical [2,2′-Azobis (2-amidinopropane) dihydrochloride, AAPH]. MLE contained three f ...
DOI:
10.1007/s12272-013-0090-x