ABSTRACT
This work mainly focus on the anti-oxidant potency of aqueous, methanolic and ethanolic extracts of two Indian
medicinal plants (Andrographis paniculata and Tinospora cordifolia). The methanolic extracts of leaves of Andrographis
paniculata showed promising anti-oxidant activity followed by ethanolic extracts of leaves of Tinospora cordifolia. Results
suggest that the active anti-oxidant compounds are better extracted in methanol for Andrographis paniculata and in ethanol
for Tinospora cordifolia. Results also suggest that there is a direct co-relation between the total polyphenols extracted and
anti-oxidant activity. Free radical scavenging potential of various extracts (methanol, ethanol and aqueous) of A.paniculata
and T. cordifolia were evaluated by using reducing power. In this method, ascorbic acid was used as a standard of
determining reducing power. The methanol extract of the leaves of A. paniculata exhibited appreciable activity as compared
to the aqueous and ethanol extracts, indicating that A. paniculata has promising free radical scavenging activity.