| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high purity tyrosinase activity inhibitor which shows high safety to the human body, prossesses excellent stability, e.g. thermostability, or the like, and is free from troubles such as coloration. SOLUTION: This tyrosinase activity inhibitor is obtained by including at least one of the compounds represented by general formula (1) (wherein, R1 and R2 stand for each a 1-2C alkyl group), general formula (2) (wherein, R3 stands for methoxy group; R4 stands for an aldehyde or methoxy group), general formula (3) (wherein, R5 and R6 stand for each H or OH group and contain at least one of OH groups), general formula (4) (wherein, R7 to R10 stand for each H or methyl group and contain at least one of methyl groups), general formula (5) (wherein, either R11 or R12 is methoxy group and the other is H) or general formula (6) (wherein, the dotted line shows the position of double bonds and has at least one of double bonds). |
