Study on antioxidant property in selected medicinal plant extracts.

Abstract

The Clitoria ternatea, Solanum nigrumand Aloe vera leaves were extracted serially by the solvents of increa s- ing polarity (petroleum ether, chloroform and ethano l) were tested for their free radical scavenging activity against DPPH. The petroleum ether extracts of Clitoria ternatea, Solanum nigrum and Aloe vera leaves were the most effective scavenging of DPPH. These plant extracts were also analyzed for the activ ities of selected enzymic antioxidants such as catalase, polyphenol oxidase and the non -enzymic antioxidants were ascorbic acid and total phenols. The results showed the leaves of Solanum nigrumpossess higher levels of antio xidants.