Investigation of DPPH Radical Scavenging, Antioxidant and Melanogenesis Stimulating Activities of Various Pigment Extracts from Thai Herbal Plants.

摘要

ABSTRACT The purpose of this study was to investigate the DPPH radical scavenging, antioxidant and melanogenesis stimulating activities of various pigment extracts from Thai herbal plants. All ethanolic extracts were determined for their antioxidant activity by DPPH assay and FRAP assay. The melanogenesis stimulating activities were studied by the stimulation of tyrosinase enzyme activity and melanocyte proliferation of these extracts at various concentrations (50, 100 and 500 g/mL) was evaluat.