Results 11 to 20 of about 75,591 (199)

Determination of Antioxidants by DPPH Radical Scavenging Activity and Quantitative Phytochemical Analysis of Ficus religiosa

open access: yesMolecules, 2022
The use of F. religiosa might be beneficial in inflammatory illnesses and can be used for a variety of health conditions. In this article, we studied the identification of antioxidants using (DPPH) 2,2-Diphenyl-1-picrylhydrazylradical scavenging activity
Siddartha Baliyan   +6 more
doaj   +1 more source

Antioxidant Activity and Discrimination of Organic Apples (Malus domestica Borkh.) Cultivated in the Western Region of Romania: A DPPH· Kinetics–PCA Approach

open access: yesPlants, 2021
Apple (Malus domestica Borkh.) is one of the most used fruit for beverages in Romania. The goal of the study was to evaluate the antioxidant activity and discrimination of various parts of organic and non-organic apple varieties cultivated in the western
Olimpia Alina Iordănescu   +8 more
doaj   +1 more source

ICH Validation of DPPH Assay Method: Some Interesting Medicinal Drugs

open access: yesEurasian Journal of Science and Engineering, 2020
Background and Aim: As part of our antioxidant plants screening project, we conducted a phytochemical study on their antioxidant activity to provide a standard and reliable assessment tool.
Fatiha El Babili   +4 more
doaj   +1 more source

Determination of DPPH Radical Oxidation Caused by Methanolic Extracts of Some Microalgal Species by Linear Regression Analysis of Spectrophotometric Measurements

open access: yesSensors, 2007
The demonstrated modified spectrophotometric method makes use of the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and its specific absorbance properties. Theabsorbance decreases when the radical is reduced by antioxidants.
Ulf-Peter Hansen   +5 more
doaj   +1 more source

Synthesis and DPPH Radical Scavenging Activity of Prenylated Phenol Derivatives

open access: yesMolecules, 2012
The synthesis of twenty six prenylated phenols derivatives is reported. These compounds were obtained under mild conditions via Electrophilic Aromatic Substitution (EAS) coupling reactions between phenol derivatives containing electron-donor subtituents ...
Héctor Carrasco   +9 more
doaj   +1 more source

Synthesis, DPPH and ABTS Activity of Novel Furfuryl-Chalcone Derivatives

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, novel furfuryl-chalcone derivatives substituted sulfonyl chloride or sulphonamide were synthesized. Their antioxidant properties were investigated via DPPH and ABTS assays. All furfuryl-chalcones had high antioxidant properties. Among them,
Zuhal Şahin, Enes Akgün, Fatih Sönmez
doaj  

Potensi Antioksidan Rumput Laut Gracilaria verrucosa Dari Pantai Gunung Kidul, Yogyakarta

open access: yesJurnal Kelautan Tropis, 2019
Gracilaria verrucosa is red algae that has been widely used as an antioxidant. This research was conducted to test antioxidant activity, total phenolic content and bioactive compound of Gracilaria verrucosa obtained from Pok Tunggal Beach and Ngandong ...
Wahyu Febrianto   +4 more
doaj   +1 more source

Kinetics of DPPH• scavenging by bacterioruberin from Haloferax alexandrinus GUSF-1 (KF796625)

open access: yesJournal of Analytical Science and Technology, 2021
This is the first account of the kinetics of free radical scavenging by bacterioruberin obtained from cells of Haloferax alexandrinus GUSF-1(KF796625), grown at optimum conditions of 25% NaCl, pH 7, 42 °C, 150 rpm in NaCl Tryptone yeast extract medium ...
Jyothi Judith Alvares   +1 more
doaj   +1 more source

Aktivitas Penangkapan Radikal DPPH (1,1-Diphenyl-2-picrylhydrazyl) Ekstrak Madu Sebelum dan Sesudah Pemanasan

open access: yesJRST: Jurnal Riset Sains dan Teknologi, 2023
Pemanasan pada suhu dan waktu optimum dapat meningkatkan aktivitas antioksidan pada madu apis dan trigona karena meningkatnya total fenolik, total flavonoid dan pigmen coklat.
La Ode Sumarlin   +6 more
doaj   +1 more source

DPPH-Scavenging Activities and Structure-Activity Relationships of Phenolic Compounds

open access: yesNatural Product Communications, 2010
Thirty-eight phenolic compounds (including 31 flavonoids) were examined for their DPPH radical-scavenging activities, and structure-activity relationships were evaluated.
Cheng-Dong Zheng   +5 more
doaj   +1 more source

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