ANTIOXIDANT PROPERTY OF ANDROGRAPHIS PANICULATA AND GYMNEMA SYLVESTRE

Abstract

A study was conducted to estimate the antioxidant property of methanolic extracts of the selected herbal plants like Andrographis paniculata and Gymnema sylvestre. The antioxidant activity was evaluated by DPPH radical scavenging activity method. The Gymnema sylvestre methanolic extract showed more or less the same antioxidant activity by inhibiting DPPH than the methanolic extract of Andrographis paniculata.The quantitative analysis of flavonoids showed a value of 0.863mg/ gram in Gymnema sylvestre which was close to the standard value of 1.163 mg/ gram and Andrographis paniculata showed 0.545 mg/ gram of flavonoid content.The XRD analysis peaks may also be due to this high flavonoid content in the plant material. The study concludes that the antioxidant property may be due to the flavonoids present in the selected herbal plants.