一株产己酸乙酯香酯液的生产菌株的鉴定及其生理生化特性研究

摘要

从贵州某知名白酒企业浓香大曲中分离筛选得到1株产己酸乙酯的菌株IS518。根据其形态特征、培养特征、18S rDNA分子克隆测定及系统发育分析,鉴定菌株IS518为红曲属的紫色红曲霉（Monascus purpureus）。对该菌株进行生理生化试验测定,结果表明,IS518菌株己酸乙酯酯化力较高,在实验室条件下可达62.79 mg/g。%A ethyl-caproate-producing strain IS518 was isolated successfully from Luzhou-flavor Daqu made in Guizhou. It was identified as Monuscus purpureus by the analysis of its morphology, its culture characteristics, and by cloning measurement of its 18S rRNA. Physiological and biochemical test indicated that strain IS518 had strong ethyl caproate-producing capcity （up to 62.79 mg/g in the Lab）.（Tran. by YUE Yang）