Antioxidant property and phenol content of some medicinal plants from Sonitpur district of Assam

Abstract

The present experiment was conducted in the Department of Molecular Biology and Biotechnology, Tezpur University during 2007-08. In this experiment, nine indigenous medicinal plants are analysed for their total phenolic contents and antioxidant activity viz. Amaranthus spinosus, Centella asiatica, Chenopodium album, Houttuyniacordata, Moringa oleifera, Paederia foetida and Polygonum chinense. The antioxidant activity of methanol extracts of the plants were determined by Spectrophotometric method using the stable free radical DPPH (2, 2-diphenyl-1-picrylhydrazyl). The results revealed that Moringa oleifera leaves recorded highest total phenolic content and exhibited highest percent inhibition of free radical followed by Houttuynia cordata. While, the lowest total phenolic content and lowest percent inhibition of free radical was recorded in Chenopodium album.