耐高温酒精酵母的筛选  

Study on screening of thermotolerant yeast strains

作　　者：易弋[1] 黎娅[2] 容元平[1] 李凯[3] 

机构地区：[1]广西工学院生物与化学工程系,广西柳州545006 [2]广西工学院科技处,广西柳州545006 [3]四川省中医药高等专科学校,四川绵阳621000

出　　处：《广西工学院学报》2009年第3期26-29,共4页Journal of Guangxi University of Technology

基　　金：广西工学院博士基金项目(0818001);广西工学院科学基金项目(0840202)资助

摘　　要：从酒精厂废液、糖厂废糖蜜、土壤及淤泥等七种不同样品中,经富集、分离、纯化,筛选得到3株耐高温酵母菌TM6、TM10和TM20.实验结果表明,3株菌都能在50℃的高温下生长,但高温会明显影响酵母菌的发酵能力.30℃下,TM10的发酵酒精终浓度最高,达到了7.82%(v/v).而在40℃下TM20的发酵能力要高于TM6和TM10,且发酵酒精终浓度仅比30℃时降低了约6%.Three thermotolerant yeast strains,TM6,TM10 and TM20,were isolated from nature.The results showed that the three strains can survive at 50 ℃ and fermentation would be restrained obviously at high temperature.The alcohol ferment strength of TM6 was better than the others at 30 ℃ and the alcohol concentration reached 7.82%（v/v）.But the ferment strength of TM20 was higher than TM6 and TM10 at 40 ℃.The alcohol concentration was just reduced about 6% compared with the concentration at 30 ℃.

关 键 词：耐高温 酒精发酵 酵母 筛选 

分 类 号：TS262.2[轻工技术与工程—发酵工程]