酒糟中耐高温酵母菌的筛选及分类鉴定

Isolation and Identification of Thermotolerant Yeast Strains from Maotai Distiller's Grains

从茅台酒酒糟中分离得到12株酵母菌，在37 47℃条件下进行培养观察。用菌落形态、生理生化实验分析鉴定菌株。结果表明，2株酵母菌能在47℃的高温下生长，分别为1号和2号。根据形态特征（菌落、细胞、子囊孢子、假菌丝、掷孢子）和生理生化特征等，初步将1号和2号酵母菌鉴定为球拟酵母属和酒香酵母属。1号和2号菌株在47℃时生长良好，具有一定的研究价值。

In this study, 12 yeast strains were isolated from Maotai distiller’s grains, then they were cultivated at 37 to 47℃, and they were identified through colony morphology analysis and physiological and biochemical analysis. The results suggested that, 2 yeast strains grew well at 47℃and named No.1 and No.2 strain, and they were identified as Torulopsis and Brettanomyces according to their morphological features （colony, cells, ascospores, pseudohyphae and ballistospore） and their biological and biochemical characteristics. Those 2 strains were of certain research values.