Tyrosinase is an enzyme involved in melanin production. To identify inhibitors of this enzyme in natural products, extracts and fractions of hemp seed husk were screened for tyrosinase inhibition. Phenylpropionamides 1-9, which were isolated from the ethyl acetate fraction, had inhibitory effects; compounds 3 and 4 had the greatest inhibitory effects. Cannabisin A (3) was a non-competitive and cannabisin B (4) was a competitive inhibitor. The binding site and interaction on tyrosinase of each inhibitor were calculated by computational chemistry. Potential inhibitor 3 decreased the melanin content and tyrosinase activity in B16F10 melanoma cells. Therefore, cannabisin A (3) has potential as a tyrosinase inhibitor.
Keywords: Hemp seed husk; Phenylpropionamides; Tyrosinase.
Copyright © 2024. Published by Elsevier B.V.