Journal
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume 28, Issue 4, Pages 1074-1077Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-010-0484-0
Keywords
Depigmenting; Melanin; Melanogenesis; Tyrosinase
Funding
- Ministry of Health & Welfare, Republic of Korea [103017]
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To develop a novel skin depigmenting agent from natural sources, the inhibition of melanogenesis by the Chinese herb, Sterculia lynchnophera (SL), was evaluated. Treatment of B16F10 melanoma cells and melan-a cells with SL exhibited a 32.9% and 68.2% inhibition of melanin synthesis without cytotoxicity at a concentration of 200 mu g/ml, respectively. This herb possessed a high free radical scavenging activity with IC50=11.02 mu M. The methanol extract of SL slightly inhibited in vitro mushroom tyrosinase activity (23.4% at a concentration of 200 mu g/ml) and had a significant inhibitory effect on cellular tyrosinase activivity (48.65% and 88.56% inhibition at the concentration 200 mu g/ml in B16F10 cells and C57BL/6 melan-a cells, respectively). From the western blotting results, SL inhibited the expression of tyrosinase and tyrosinase related protein 1 (TRP-1). Taken together, we suggest that SL may be a safe and effective depigmentation agent.
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