Fig 1. Anti-melanogenic effect of EE-AC in cell-free system.
(A) Determination of Cu+2 reducing power of EE-AC. Vitamin C (Vit C) was used as a reference antioxidant. Values are significantly different by comparison with the negative control (C; 0.1% DMSO), and the data are presented as mean ± SD. **p < 0.01; ***p < 0.001. (B) Determination of mushroom tyrosinase activity. Kojic acid was used as a positive control. Results are represented as percentages of negative control (0.1% DMSO), and the data are presented as mean ± SD. Values are significantly different by comparison with the negative control. *p < 0.05; **p < 0.01; ***p < 0.001.