Sensors, 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
Demonstration of a 1/4 cycle phase shift in the radiation-induced oscillatory-magnetoresistance in GaAs/AlGaAs devices [PDF]
, 2004 We examine the phase and the period of the radiation-induced oscillatory-magnetoresistance in GaAs/AlGaAs devices utilizing in-situ magnetic field calibration by Electron Spin Resonance of DiPhenyl-Picryl-Hydrazal. The results confirm a $f$-independent 1/
J. H. Smet +12 more
core +3 more sources
Synthesis and DPPH Radical Scavenging Activity of Prenylated Phenol Derivatives
Molecules, 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
In vitro ion chelating, antioxidative mechanism of extracts from fruits and barks of tetrapleura tetraptera and their protective effects against fenton mediated toxicity of metal ions on liver homogenates [PDF]
, 2015 The aim of the present study was to investigate the antioxidant activity and protective potential of T. tetraptera extracts against ion toxicity. The antioxidant activity of the extracts was investigated spectrophotometrically against several radicals (1,
Biapa, P. C. N. +6 more
core +3 more sources
Synthesis, DPPH and ABTS Activity of Novel Furfuryl-Chalcone Derivatives
Sakarya 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
Antioxidants, 2020 Essential oils are an important source of natural antioxidants and multiple methods have been established for evaluation of their overall antioxidant activity, however, the antioxidant activities of their compounds are less investigated.
Xiang Wang +5 more
doaj +1 more source
JRST: 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
Potensi Antioksidan Rumput Laut Gracilaria verrucosa Dari Pantai Gunung Kidul, Yogyakarta
Jurnal 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
Chemical composition, antioxidant and alpha-Glucosidase-Inhibiting activities of the aqueous and hydroethanolic extracts of Vaccinium myrtillus Leaves [PDF]
, 2017 Vaccinium myrtillus (bilberry) leaf is traditionally used in southeastern Europe for the treatment of diabetes. In the present study, the ability of bilberry leaf extracts to inhibit carbohydrate-hydrolyzing enzymes and restore glutathione concentration ...
Bljajic, Kristina +7 more
core +1 more source
Kinetic behaviour of DPPH radical scavenging activity of tomato waste extracts [PDF]
Journal of the Serbian Chemical Society, 2012 The kinetic behaviour of tomato waste extracts (obtained from six genotypes) and standard antioxidant compounds (ascorbic and caffeic acid) were investigated using 2,2-diphenyl-1-picrylhydrazyl radical test.
Ćetković Gordana S. +3 more
doaj +1 more source