Abstract:
PURPOSE: A composition containing dehydroglyasperin C, dehydroglyasperin D, or isoangustone A as an active ingredient for skin whitening is provided to suppress tyrosinase activity and melanogenesis, and to ensure excellent skin whitening effect. CONSTITUTION: A cosmetic composition for skin whitening contains dehydroglyasperin C of chemical formula 1 as an active ingredient. The cosmetic composition contains dehydroglyasperin D of chemical formula 2 as an active ingredient. The cosmetic composition for skin whitening contains isoangustone A of chemical formula 3 as an active ingredient. The compounds are derived from Glycyrrhizae radix.
Abstract:
The present invention relates to a pharmaceutical composition comprising quercetagetin as an active ingredient for preventing and treating skin diseases or a food composition for alleviating skin diseases. Since the composition comprises quercetagetin, as an active ingredient, which inhibits phosphorylation of JNK and PI3K signaling proteins by combining with JNK-1 and PI3K which are important signaling proteins for regulating inflammatory responses and shows an effect of suppressing the activity of AP-1 and NF-κB which are indicators of inflammation, the composition has an excellent effect for preventing or treating skin diseases such as skin inflammation and skin cancer.