Abstract
The purpose of this study was to research the whitening effects of the extract from Angelica gigas Nakai, which is one of the most widely used herbal medicines in Asia. For whitening effects, the tyrosinase inhibition effect of the A. gigas Nakai extract was shown to be greater than 70% at 1,000 concentration. The result of measuring the cell toxicity effect of the extract from A. gigas Nakai on melanoma cells showed 99% toxicity at 500 concentration. The microphthalmia-associated transcription factor (MITF), tyrosinase related protein-1 (TRP-1), tyrosinase related protein-2 (TRP-2), and tyrosinase mRNA expression inhibitory effect by reverse transcription-PCR of the extract from A. gigas Nakai were decreased by 85.7%, 123.9%, 68.8%, and 208%, respectively, at 50 concentration. All these findings could verify that extract from A. gigas Nakai could have an effect on whitening. Moreover, extract from A. gigas Nakai has great potential as a cosmetic ingredient.
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