Antimelanogenic activities

This fraction showed the highest antioxidant activity by dose-dependent free radical scavenging action (IC50 69.50 ± 1.55 µg/mL). R. tomentosa leaf extracts, especially the n-hexane fraction, also exhibited strong antimicrobial activity against Gram-negative and Gram-positive bacteria and fungi as well as moderate inhibitory effect on L-DOPA (L-3,4-dihydroxyphenylalanine) oxidase activity of tyrosinase in the melanin biosynthesis pathway.

9p tamynhan8 04-11-2020 13 1   Download