Abstract
This research was carried out to identify the whitening effect of Banana leaf extract. B16F10 cells were used to measure cell viability, mRNA expression, and tyrosinase activity inhibition assay from B16F10 cell. We also carried out clinical test of the cream product containing banana leaf extract. In this study, we elucidated the effects of banana leaf extract on TRP1 / TRP2 / Tyr mRNA expression and tyrosinase activity inhibition. Quantitative real-time PCR showed that banana leaf extract decreased mRNA level of TRP1, TRP2 and Tyr gene and tyrosinase activity inhibition assay also revealed that banana leaf extract 65% decreased melanin production in B16F10 cell. Banana leaf extract cream can whiten the skin darkness induced by ultraviolet. Therefore, we successfully identified the whitening effect of banana leaf extract, and this finding suggested the banana leaf extract is a considerable potent cosmetic ingredient for skin whitening. Based on this, we anticipated further researches about banana leaf extract for mechanism to develop not only cosmetics but healthcare food or medicines.
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