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You searched for: Journal name Journal of Biologically Active Products from Nature Remove constraint Journal name: Journal of Biologically Active Products from Nature Subject antioxidant activity Remove constraint Subject: antioxidant activity Subject term antioxidant activity Remove constraint Subject term: antioxidant activity Subject term quercetin Remove constraint Subject term: quercetin
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1. Total Phenolic Content, Antioxidant and Antimicrobial Activity of Sambacus nigra L

Author:
Mohadese Mahboubi; Nastaran Kazempour; Atefeh Mahboubi
Source:
Journal of Biologically Active Products from Nature 2012 v.2 no.5 pp. 275-283
ISSN:
2231-1874
Subject:
Candida albicans; Caprifoliaceae; Escherichia coli; Gram-positive bacteria; Salmonella Typhimurium; Streptococcus pyogenes; aerial parts; anti-infective properties; antioxidant activity; antioxidants; beta-carotene; culture media; flowers; gallic acid; inhibitory concentration 50; linoleic acid; quercetin; small fruits
Abstract:
... Sambacus nigra or elder berry is a plant from Caprifoliaceae family. The total phenolic content (TPC), total flavonoid content (TFC), antioxidant and antimicrobial activity of methanolic, ethanolic and aqueous extract from aerial parts, berries and flowers were evaluated. TPC and TFC was assessed by spectrophotometrical method, the antioxidant activity was evaluated by DPPH and β-carotene linoleic ...
DOI:
10.1080/22311866.2012.10719135

2. Various Antioxidative Activities of Iranian Walnut (Juglans regia L.) Green Husks Hydroalcoholic Extract and its Effects on LDL Oxidation

Author:
Sharokh Bagheri; Hassan Ahmadvand; Ali Khosrowbeygi
Source:
Journal of Biologically Active Products from Nature 2012 v.2 no.6 pp. 330-340
ISSN:
2231-1874
Subject:
Juglans regia; antioxidant activity; antioxidants; ascorbic acid; dose response; gallic acid; hulls; inhibitory concentration 50; low density lipoprotein; monitoring; oxidation; quercetin; thiobarbituric acid-reactive substances; walnuts
Abstract:
... Walnuts contain several antioxidant compounds which are thought to contribute to their biological properties. The present work investigated the various antioxidative activities of walnut (Juglans regia L.) green husks hydroalcoholic extract (W) and its effect on oxidation of LDL induced by CuSO ₄in vitro by monitoring the formation of conjugated dienes and thiobarbituric acid reactive substances ( ...
DOI:
10.1080/22311866.2012.10719141

3. 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

4. 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

5. Quercetin Mediated Inhibition of Hydrogen Peroxide-induced Genomic DNA Damage and Toxicity

Author:
Tanmoy Mondal; Sandip Pal; Subrata Kumar Dey
Source:
Journal of Biologically Active Products from Nature 2017 v.7 no.3 pp. 200-213
ISSN:
2231-1874
Subject:
DNA; DNA damage; antioxidant activity; cell viability; chromosome aberrations; comet assay; hydrogen peroxide; lymphocytes; monitoring; protective effect; quercetin; spectral analysis; toxicity
Abstract:
... Flavonoids are reported to exhibit a wide variety of biological effects including antioxidant activities. The present study aims to explore the protective effect of the flavonol quercetin against hydrogen peroxide-mediated damage. The effects of quercetin on H ₂O ₂-mediated DNA damage were evaluated using spectrophotometric analyses, DNA damage monitoring by gel electrophoresis, cell viability, CB ...
DOI:
10.1080/22311866.2017.1329665

6. HPLC Analysis and Antioxidant Properties of Algerian Lepidium draba Ethyl acetate Extract

Author:
Bensaid Sara Ouissem; Bicha Sabrina; Benmekhebi Lotfi; Rebbas Khellaf; Bensouici Chawki; Demirtas Ibrahim; Benayache Samir; Benayache Fadila
Source:
Journal of Biologically Active Products from Nature 2018 v.8 no.4 pp. 265-271
ISSN:
2231-1874
Subject:
2,2-diphenyl-1-picrylhydrazyl; 2,5-dihydroxybenzoic acid; Lepidium draba; antioxidant activity; antioxidants; caffeic acid; catechin; chlorogenic acid; ethyl acetate; ferulic acid; gallic acid; hesperidin; high performance liquid chromatography; hydroxybenzaldehyde; inhibitory concentration 50; kaempferol; medicinal properties; p-coumaric acid; protocatechuic acid; quercetin; rosmarinic acid; rutin; vanillic acid
Abstract:
... The aim of this study was to identify and quantify the phenolic compounds of the Ethyl acetate extract from Lepidium draba using HPLC-TOF/MS; and to investigate the antioxidant potencies. In this work, we have found that the Ethyl acetate soluble fraction of L. draba is a good source of antioxidant, which is the result of its phenolic acids and flavonoids. Five methods were conducted, to determine ...
DOI:
10.1080/22311866.2018.1511381

7. Phytochemical, Antioxidant, Antimicrobial, and Protein Binding Qualities of Hydro-ethanolic Extract of Tinospora cordifolia

Author:
Vijay Kumar; Simranjeet Singh; Arjun Singh; Amit Kumar Dixit; Bhavana Srivastava; Gurpreet Kaur Sidhu; Ravindra Singh; Ajay Kumar Meena; Rajesh Pratap Singh; Varanasi Subhose; Om Prakash
Source:
Journal of Biologically Active Products from Nature 2018 v.8 no.3 pp. 192-200
ISSN:
2231-1874
Subject:
2,2-diphenyl-1-picrylhydrazyl; Tinospora cordifolia; anti-inflammatory activity; antifungal properties; antioxidant activity; aspirin; beta-sitosterol; flavanoids; gallic acid; nitric oxide; protein binding; quantitative analysis; quercetin; superoxide anion; therapeutics
Abstract:
... The study was performed to check the chemical, antioxidant, antimicrobial and protein binding qualities of the hydro-ethanolic extract of Tinospora cordifolia (TC). In qualitative and quantitative analysis of extract, the major compounds were tinocordioside, cordifolide A, palmatine, quercetin, β-sitosterol, heptacosanol, and syringin. Hydro-ethanolic extract of TC exhibited low antibacterial and ...
DOI:
10.1080/22311866.2018.1485513

8. Total Phenolic Contents and Antioxidant Activity of Methanol Extract from Leaves, Flowers and Stems of Warionia saharae L. from Morrocco

Author:
Said Khoudali; Abdelhak Essaqui; Said Essediki; Abdelmjid Dari
Source:
Journal of Biologically Active Products from Nature 2018 v.8 no.5 pp. 335-343
ISSN:
2231-1874
Subject:
2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; flower extracts; flowers; inhibitory concentration 50; leaf extracts; leaves; methanol; quercetin; stems; Morocco
Abstract:
... The phenolic contents of metabolic extracts of Warionia saharae L. leaves, flowers and stems from Morocco were measured in this work. The antioxidant activities of these extracts were also evaluated. The leaves methanol extract afforded the highest yield (28.2 g/100 DW) while the lowest yield was obtained from the stems (5.6 g/100 DW). Total phenolic and flavonoid contents were (73.0 ± 0.52 mg Gal ...
DOI:
10.1080/22311866.2018.1516569