Journal name: Journal of Biologically Active Products from Nature / Subject term: 2,2-diphenyl-1-picrylhydrazyl and quercetin

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

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
: https://doi.org/10.1080/22311866.2013.782754

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
: https://doi.org/10.1080/22311866.2018.1511381

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
: https://doi.org/10.1080/22311866.2018.1485513

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
: https://doi.org/10.1080/22311866.2018.1516569

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