| 摘要 |
PROBLEM TO BE SOLVED: To obtain a formation inhibitor which is effective in inhibiting the formation of and in removing melanin due to black aspergillus, or the like, appearing in bathrooms, or the like, liable to be wet by using, as the effective component, a compd. selected from among triterpenes, retinolic acid derivs., sphingoid compds., and sulindac. SOLUTION: Triterpenes are classified into theα-amyrin group, theβ-amyrin group, the lupeol group, the nosterin group, and the squalene group, among which the lupeol group is suitable, more specifically, betulic acid is esp. suitable. As the retinolic acid deriv., 4-hydroxyphenylretinamide is esp. suitable. As the sphingoid compd., for example, 16-20C sphingolipids are listed; more specifically, ceramides, sphingoglycolipids, sphingophospholipids, or the like, are listed as sphingolipids. At least one of these compds. is compounded pref. in am amt. of 0.01-50 wt.% of the compsn.
|
