Research Article

Inhibitory and Acceleratory Effects of Inonotus obliquus on Tyrosinase Activity and Melanin Formation in B16 Melanoma Cells

Table 2

Effects of test compounds and kojic acid on cell viability and apoptosis rate in B16 melanoma cells. Control groups (from wells without test material or kojic acid) were set as 100% for cell viability and set as 0% for apoptosis rate. Experimental groups were expressed as a percentage of controls (mean ± SD).

CompoundsCell viabilityApoptosis rate
100 μM200 μM400 μM100 μM200 μM400 μM

Control100100100000
Fa-a88.31 ± 3.21*75.13 ± 2.65*65.32 ± 4.419.01 ± 2.2112.21 ± 3.0315.31 ± 2.90
Fa-b96.45 ± 3.08*85.32 ± 4.13*70.02 ± 2.055.11 ± 4.016.51 ± 3.3110.09 ± 4.31
Fb-a99.34 ± 1.53*99.43 ± 1.4198.24 ± 1.353.91 ± 3.275.10 ± 2.61*6.07 ± 3.53**
Fb-b99.98 ± 2.56**96.26 ± 2.6194.56 ± 3.030.31 ± 4.37***2.62 ± 3.33***5.12 ± 2.35*
Fc-a73.53 ± 3.11**45.31 ± 2.5640.51 ± 2.1210.12 ± 1.1425.44 ± 1.53***30.51 ± 1.11***
Fd-a96.70 ± 1.0197.12 ± 1.1285.03 ± 1.511.21 ± 2.312.15 ± 3.927.34 ± 3.28
Kojic acid 92.43 ± 4.41***86.08 ± 2.12**70.91 ± 3.12**9.45 ± 1.1512.36 ± 1.1915.05 ± 2.21

< 0.001, < 0.01, and < 0.05 compared with the control.