西藏牦牛曲拉中高产酒精酵母菌株的分离及鉴定

摘要

In the experiment, 80 yeast strains were separated from yak Qula samples in different altitude regions in Tibet. Through TTC primary screening, glucose tolerance secondary screening, and alcohol fermentation third screening, a yeast strain named XZ3 with good fermenting per-formance was finally obtained. Its morphological and physiological characterization and 26S rDNAD1/D2 sequences analysis indicated that such strain was Saccharomuces crevisiae.%从西藏不同海拔地区的曲拉样品分离得到80株酵母菌，经过TTC一级筛选、糖浓度耐性二级筛选和酒精发酵三级筛选获得1株发酵性能较好的菌株XZ3，结合生理生化特征和26S rDNAD1/D2序列分析，鉴定该菌株为Saccharomyces cerevisiae。