摘要
木材在亚硫酸盐法制浆过程中，占木材干重２０％～３０％的半纤维素降解成单糖而溶于废液中，废液中单糖的利用，不仅能够充分利用生物质资源，而且对于后续产品木质素的深加工十分必要。废液中糖主要由己糖和戊糖组成，近年来，随着阔叶材在制浆原料中的比例不断增加，废...
Pentoses and hexoses in spent sulfite liquor were fermented to ethanol simultaneously with a pentose fermentable yeast Candida shehatae R in a batch system based on the results of 1.5 L fermentor.The spent sulfite liquor was neutralized to pH 5.20～5.50,followed by fermentation for 22 h at 38℃±1℃ controlling the amount of air supply in 5m 3 fermentor.The concentration of sugars in the spent liquor was decreased from 25 0～26 0 g/L to 1.9～2.6 g/L,with a sugars consumption of 89%～93%.The final ethanol concentration was 1.15%～1.38%,which is 81%～94% of the theoretical yield.
出处
《生物工程学报》
CAS
CSCD
北大核心
1999年第1期124-127,共4页
Chinese Journal of Biotechnology
关键词
亚硫酸盐废液
戊糖
已糖
酒精
发酵
Spent sulfite liquor,pentose,hexose,ethanol,fermentation
