Fig. 4From: Cosmeceutical bioactivities of isolated compounds from Ligularia fischeri Turcz leavesTyrosinase inhibition assay of compounds 1–6. Values are expressed as the mean ± SD (* p < 0.05, n = 3). No effect on tyrosinase inhibition was observed with 7 or 8. Kojic acid was used as a positive controlBack to article page