摘要
在固态乙醇发酵中,产物乙醇浓度和发酵温度的升高影响酵母菌的发酵性能,为解除产物乙醇对酵母菌的抑制作用,本实验利用酵母菌在固态发酵中产生的另一重要产物二氧化碳作为循环载体,将乙醇从发酵基质中抽离出来,通过冷凝器的分离,二氧化碳再重新利用,这样既解除了乙醇对酵母发酵的抑制作用,又将发酵培养基的温度稳定在酵母发酵适宜的温度,从而提高了发酵效率。
The increase of ethanol content and the rise of fermentation temperature would seriously inhibit the fermenting performance of yeast in solid ethanol fermentation. To relieve the inhibition of ethanol on the yeast, CO2, the other important product in solid fermentation, was used as circle carrier to draw ethanol from fermenting substrate, then ethanol could be separated by condensing apparatus and CO2 could be reused. Such method could not only achieve the derepression of ethanol but also keep stable temperature of fermenting culture medium for yeast fermentation, which could increase fermenting efficiency.
出处
《酿酒科技》
北大核心
2007年第7期20-22,25,共4页
Liquor-Making Science & Technology
基金
山东省科技攻关计划项目
关键词
白酒
酵母
固态发酵
气栽乙醇发酵
解除抑制
liquor
yeast
solid fermentation
gas-stripping ethanol fermentation
derepression
