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The antioxidant activity and total contents of phenolic compounds and flavonoids in extracts of several medicinal plants from southeastern Kazakhstan are studied. Antioxidant activity was evaluated in vitro using the cation-radical 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS•+), the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH•), and the FRAP method. The antioxidant and antiradical activities...
This study investigated the superoxide anion and hydroxyl radical scavenger properties, as well as the inhibition of lipid peroxidation by the crude hydroalcoholic extract (CE) and the butanolic (BF) and ethyl acetate (EAF) fractions of Cuphea carthagenensis leaves. In a enzymatic system of O 2- production (xanthine/xanthine oxidase system) the CE, EAF and BF (0.1-100μgml -1...
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