Topic
DPPH
About: DPPH is a research topic. Over the lifetime, 30196 publications have been published within this topic receiving 759916 citations. The topic is also known as: 2,2-diphenyl-1-(2,4,6-trinitrophenyl)hydrazin-1-yl.
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TL;DR: In this article, the total phenolic content and related total antioxidant capacity of 70 medicinal plant infusions were analyzed, and the effect of infusion time and infusion temperature on the phenolic contents, Ferric Reducing/Antioxidant Power (FRAP) and free radical scavenging ability was tested.
1,071 citations
TL;DR: In this article, a b-carotene-linoleic acid (linoleate) model system was used to evaluate the scavenging effect on the DPPH free radical and capacity to scavenge hydroxyl free radicals.
1,067 citations
TL;DR: The results show promising perspectives for the exploitation of non-traditional tropical fruit species with considerable levels of nutrients and antioxidant capacity, as well as the considerable antioxidant capacity found for acerola – Malpighia emarginata and camu-camu – Myrciaria dubia.
1,044 citations
TL;DR: In this paper, the contribution of l-ascorbic acid (AA) to the total antioxidant activity of fruits was investigated by using RP-HPLC, which measured the change of absorbance of the free radical solution at 414 nm in the test reaction mixture following addition of the fruit extract, as compared with AA.
1,031 citations
TL;DR: In this article, the relative antioxidant activity in selected Iranian medicinal plant species' extracts was determined spectrophotometrically, and the highest radical scavenging effect was observed in Mellilotus officinalis with IC50 = 0.018 mg ml −1.
Abstract: In present study, we carried out a systematic record of the relative antioxidant activity in selected Iranian medicinal plant species' extracts. The total phenol varied from 24.1 ± 1 to 289.5 ± 5 mg g -1 in the extracts. Flavonoid contents were between 25.15 ± 0.8 and 78.3 ± 4.5 mg g-1. 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging effect of the extracts was determined spectrophotometrically. The highest radical scavenging effect was observed in Mellilotus officinalis with IC50 = 0.018 mg ml –1. The potency of radical scavenging effect of M. officinalis extract was about 4 times greater than synthetic antioxidant butylated hydroxy toluene (BHT). The greater amount of phenolic compounds leads to morepotent radical scavenging effect as shown by M. officinalis extract
1,029 citations