In vitro antioxidant activity of Psidium guajava Linn. by using ethanolic extract fraction of leaves and bark

Abstract

Guava is most popular and commonly available plant all over the India. This study is about the evaluation of in vitro antioxidant activity of Psidium guajava Linn. The leaves and bark of the Psidium guajava Linn. are used for study of the antioxidant activity. Ethanolic extract of these leaves and bark is used for this evaluation study. Nitric oxide and DPPH methods are used to evaluate free radical scavenging activity.