Fig. 1
The inhibition effects of isoeugenol, shikonin, baicalein, rosmarinic acid, and dihydromyricetin on the diphenolase activity of mushroom tyrosinase. The IC50 values of the five compounds on the tyrosinase diphenolase activity were respectively 33.33 μmol/L, 26.67 μmol/L, 13.33 μmol/L, 6.67 μmol/L, and 3.33 μmol/L (n = 5, P < 0.05)