名称:
                                Biotransformation of monoterpenoids, (−)- and menthols, terpinolene and carvotanacetone by Aspergillus species
                             
                            
                                摘要:
                                Four monoterpenoids. (-)- and (+)-menthols, terpinolene and carvotanacetone were biotransformed by Aspergillus niger and several related species. Aspergillus niger converted (-)-menthol to 1-, 2-, 6-, 7-, and 9-hydroxymenthols and the mosquito repellent-active 8-hydroxymenthol. On the other hand, (+)-menthol was smoothly biotransformed by A. niger to give 7-hydroxymenthol. Aspergillus cellulosae biotransformed (-)-menthol specifically to 4-hydroxymenthol. Terpinolene and (-)-carvotanacetone were converted by A. niger to two alpha,beta-unsaturated ketones, a fenchane-type compound and diastereoisomeric p-menthane-2,9-diols and 8-hydroxycarvomenthol, respectively.