Evaluación de la capacidad antioxidante de siete plantas medicinales peruanas.

We evaluated the antioxidant activity of twentynine extracts of the following medicinal plants: Cinnamomum zeylanicum "canela", Calophyllum brasiliense "lagarto caspi", Myrciaria dubia "camu camu", Minthostachys mollis "muña", Alchornea castaneifolia "hiporuro", Smallanthus sonchifolius "yacón", Lepidium peruvianum and Lepidium meyenii "maca", by the bleaching method of 2,2-diphenyl-1-picrylhidrazyl (DPPH) radical. The antioxidant capacity obtained at the concentrations of 1 ug/mL, 50 ug/mL, 100 ug/mL and 200 ug/mL were: canela (ethanolic extract from bark) 97,59% at 1 ug/mL concentration, lagarto caspi (methanolic extract from leaves) 99,76% at 50 ug/mL, camu camu (methanolic extract from the fruit) 98,09% at 50 ug/mL, muña (watery extract from leaves) 92,41% at 50 ug/mL, hiporuro (methanolic extract from leaves) 100,57% at 100 ug/mL, Lagarto caspi (watery extract from leaves) 110,56% at 100 ug/mL, Lepidium peruvianum (watery extract from hypocotyl) 95,55% at 200 ug/mL and Lepidium meyenii (methanolic extract from hipocotyl) 88,21% at 200 ug/mL, in comparison with ascorbic acid (Vitamin C) that presented an antioxidant activity of 92,82%. [ABSTRACT FROM AUTHOR]