Fig. 2.

Ginseng berry extract reduces melanogenesis by inhibiting tyrosinase activity, and this effect is mainly derived from its effective component, syringaresinol. (A) The amount of syringaresinol in ginseng root or ginseng berry extract. The mean value (ug/mL) is presented. The melanin levels were visualized after dissolving the cell pellets in 1N NaOH (B) and quantified (C). The tyrosinase activity was also measured (D). Ginseng root, ginseng berry extract, or syringaresinol were used to treat MNT1 cells for 48 h. Data are presented as mean ± standard deviation. * p < 0.05 by two-tailed Student t test.