Figure 1

Radical scavenging activity of the extracts as evaluated by the DPPH and ABTS assays. (A) BHT, PapE, PomPE and SE scavenged DPPH free radicals formation in a dose-dependent manner, and reached plateau at a concentration of 30 μg/ml. The dose-dependent effect of PapPE was higher than PomPE and SE. Results are the means ± SD of 6 measurements. (B): Free radicals scavenging ability of vitamin E analog (Trolox), PapPE, PomPE and SE against ABTS radical formation. PapPE, PomPE and SE showed inhibition of ABTS radical formation in a dose-dependent manner. The IC₅₀ of PapPE was comparable for Trolox standard, and significantly higher than PomPE and SE, P < 0.05. Results are the means ± SEM of 6 measurements.