乙醇生产酵母菌的选育

Breeding of a High ethanol-producing Yeast Strain

摘要:

巴西燃料乙醇取得巨大成功，原油价格的不断攀升，以及糖价的下跌，以甘蔗为原料的燃料乙醇已经向世人展现出良好的市场潜力。但目前我国国内还尚未见到甘蔗汁乙醇的研究，作为一项储备技术，对甘蔗汁乙醇技术的研究具有十分重要的意义。本文对商业化和实验室筛选的多株酵母发酵甘蔗汁能力进行了研究。结果表明：sy酵母生长速度较快，gw2酵母产酒率较高，gw2酵母死亡率较低。综上，sy酵母和gw2酵母更适合于甘蔗汁发酵酒精的生产。

Abstract:

The production of ethanol by sugarcane juice fermentation had great meaning to the development of our economy due to the rising oil price and lower sugar price. In this paper, a high ethanol-producing strain was screened from several yeasts. Two yeast (gw2 and sy ) were found to be suitable for the ethonal production via sugarcane juice fermentation for their higher ethanol-producing capabilities and lower mortality rate.