The reduction capacity of stable DPPH radicals was determined
by decrease in its absorbance at 517 nm induced by the
antioxidants present in extracts and the results are illustrated
in Fig. 1. All extracts showed tendency to quench the DPPH
radicals in a concentration-dependent fashion. AqME
proved a potent free radical scavenger and showed DPPH
inhibition followed by AqE, ME and AE, respectively, at
1 mg/ml concentration. Many authors have attributed higher
free radical scavenging ability of plants to their phenol contents
and their ability to donate hydrogen atom.2,6,16 Likewise biological end-point of oxidative damage and showed 97%
lipid peroxidation inhibition at 1 mg/ml concentration.