杨梅黄素及蛇葡萄素对酪氨酸酶有显著的抑制作用；在２ｍｍｏｌ／Ｌ的Ｌ－多巴浓度下，５０％抑制的药物浓度分别为０．０８２ｍｍｏｌ／Ｌ及０．２０８ｍｍｏｌ／Ｌ，用Ｌ－多巴作底物，蛇葡萄素对酪氨酸酶是竞争性抑制，其Ｋ＿ｉ是０．０８５ｍｍｏｌ／Ｌ；而杨梅黄素对酪氨酸酶则是混合性抑制，其Ｋ＿ｉ与Ｋ′＿ｉ分别是０．０２６ｍｍｏｌ／Ｌ与０．０７２ｍｍｏｌ／Ｌ。 Myricetin and snake grape had a significant inhibitory effect on tyrosinase. Under the concentration of 2mmol / L L-dopa, the concentrations of 50% inhibition were 0.082mmol / L and 0.208mmol / L respectively, L-dopa as a substrate, snake grape gluten competitive inhibition of tyrosinase, the K_i is 0.085mmol / L; and melanin tyrosinase is a mixed inhibition, the K_i and K ’_i are 0.026 mmol / L and 0.072 mmol / L, respectively.