Vitalized yeast with high ethanol productivity

	Vitalized yeast with high ethanol productivity
	Liu, Xiumei; Xu, Wenjuan; Zhang, Chao; Yan, Peifang; Jia, Songyan; Xu, Zhanwei; Zhang, Z. Conrad
刊名	rsc advances
	2014
卷号	4 期号:94 页码:52299-52306
通讯作者	张宗超
英文摘要	fuel ethanol is an attractive alternative to fossil-based fuels or fuel additives. very-high-gravity (vhg) ethanol fermentation is a promising technology to reduce energy consumption in distillation. however, yeast cells subjected to a high concentration of ethanol and osmotic stress readily lose cell viability, resulting in reduced ethanol productivity. here we report the beneficial effect of fully water-soluble polyethylene glycol (peg) in chemically exo-protecting yeast cells during fermentation, resulting in largely boosted cell vitality and tolerance to high ethanol concentration. the final ethanol concentration and the yeast cell viability were substantially increased as compared to peg-free fermentation. the recovered exo-protected yeast was further demonstrated to continue to deliver superior bio-catalytic performance in subsequent fermentations over that recovered from peg-free broth. furthermore, the water-soluble peg was readily recycled for reuse after distillation of ethanol.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	saccharomyces-cerevisiae ; fermentation processes ; alcohol production ; fuel alcohol ; wheat mashes ; supplementation ; glucose ; sugar
收录类别	SCI
语种	英语
WOS记录号	WOS:000344389000064
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/144072]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiumei,Xu, Wenjuan,Zhang, Chao,et al. Vitalized yeast with high ethanol productivity[J]. rsc advances,2014,4(94):52299-52306.
APA	Liu, Xiumei.,Xu, Wenjuan.,Zhang, Chao.,Yan, Peifang.,Jia, Songyan.,...&Zhang, Z. Conrad.(2014).Vitalized yeast with high ethanol productivity.rsc advances,4(94),52299-52306.
MLA	Liu, Xiumei,et al."Vitalized yeast with high ethanol productivity".rsc advances 4.94(2014):52299-52306.