highly significantp < 0.001
Compared with the blank group, arbutin group showed a highly significant tyrosinase activity of 75.056 ± 2.846 ( p < 0.001), the 400 μg/mL RGBs showed a tyrosinase activity of 84.545 ± 0.783, and the 400 μg/mL YGB showed a tyrosinase activity of 84.184 ± 2.240 ( p < 0.001), and it decreased with the increase in concentration. 2.6.