Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院等离子体物理研究所

	Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk
	Yan, SB ; Chen, XS ; Wu, JY ; Wang, PC
刊名	applied microbiology and biotechnology
	2012
中文摘要	the aim of the present study was to examine ethanol production from concentrated food waste hydrolysates using whole cells of s. cerevisiae immobilized on corn stalks. in order to improve cell immobilization efficiency, biological modification of the carrier was carried out by cellulase hydrolysis. the results show that proper modification of the carrier with cellulase hydrolysis was suitable for cell immobilization. the mechanism proposed, cellulase hydrolysis, not only increased the immobilized cell concentration, but also disrupted the sleek surface to become rough and porous, which enhanced ethanol production. in batch fermentation with an initial reducing sugar concentration of 202.64 similar to 1.86 g/l, an optimal ethanol concentration of 87.91 similar to 1.98 g/l was obtained using a modified corn stalk-immobilized cell system. the ethanol concentration produced by the immobilized cells was 6.9% higher than that produced by the free cells. ethanol production in the 14th cycle repeated batch fermentation demonstrated the enhanced stability of the immobilized yeast cells. under continuous fermentation in an immobilized cell reactor, the maximum ethanol concentration of 84.85 g/l, and the highest ethanol yield of 0.43 g/g (of reducing sugar) were achieved at hydraulic retention time (hrt) of 3.10 h, whereas the maximum volumetric ethanol productivity of 43.54 g/l/h was observed at a hrt of 1.55 h.
学科主题	等离子体物理与核聚变研究
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn/handle/334002/5656]
专题	合肥物质科学研究院_中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Yan, SB,Chen, XS,Wu, JY,et al. Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk[J]. applied microbiology and biotechnology,2012.
APA	Yan, SB,Chen, XS,Wu, JY,&Wang, PC.(2012).Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk.applied microbiology and biotechnology.
MLA	Yan, SB,et al."Ethanol production from concentrated food waste hydrolysates with yeast cells immobilized on corn stalk".applied microbiology and biotechnology (2012).