Enzymatic Hydrolysates of Corn Stover Pretreated by the Ionic Liquids/N-Methylpyrrolidone Solution for Microbial Lipid Production

	Enzymatic Hydrolysates of Corn Stover Pretreated by the Ionic Liquids/N-Methylpyrrolidone Solution for Microbial Lipid Production
	Xie HB(谢海波) ; Shen HW(沈宏伟) ; Gong ZW(龚志伟) ; Wang Q(王倩) ; Zhao ZB(赵宗保) ; Bai FW(白凤武)
	2011
会议名称	the 6th sino-us joint conference of chemical engineering
会议日期	2011-11-7
会议地点	北京
页码	1-0
通讯作者	谢海波 ; 赵宗保
中文摘要	efficient transformation of lignocellulosic materials into sugars has been intensively pursued for the production of biofuels and chemicals by microbial conversion.[1] in this study, we show that corn stover can be effectively dissolved in the solution of ionic liquids in n-methylpyrrolidone (nmp), and that the enzymatic hydrolysates of the regenerated materials are suitable for microbial lipid production by the oleaginous yeast rhodosporidium toruloides y4 (r. toruloides y4). up to 10 wt% corn stover was dissolved in emimac/nmp (xils=0.2, mole fraction of ionic liquids in the mixed solution) at 140 °c after 60 min. physiochemical analysis showed major differences in terms of cellulose crystallinity, compositional distribution and surface morphology between raw corn stover samples and the regenerated materials, indicating that dissolution in the emimac/nmp system followed by regeneration with anti-solvents could be used as an effective pretreatment technology. enzymatic saccharification of the regenerated corn stover afforded an 82.9% total reducing sugars yield and a 60.8% glucose yield within 24 h. the hydrolysates were used, without detoxification, as the carbon sources for the cultivation of r. toruloides y4 for lipid production. glucose and xylose in the hydrolysates were both consumed in our process. the overall lipid yield was estimated as 0.071 g lipid per g raw corn stover, but it is expected to be greatly improved in the future. our study provides an integrated process to convert lignocellulosic biomass into lipid and should be an appealing route for further optimization and development.
合作状况	分会口头报告
会议主办者	中国石化，经济与发展研究所
会议录	the 6th sino-us conference of chemical engineering
会议录出版者	待补充
会议录出版地	待补充
学科主题	有机化学工程
内容类型	会议论文
源URL	[http://159.226.238.44/handle/321008/116045]
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
推荐引用方式 GB/T 7714	Xie HB,Shen HW,Gong ZW,et al. Enzymatic Hydrolysates of Corn Stover Pretreated by the Ionic Liquids/N-Methylpyrrolidone Solution for Microbial Lipid Production[C]. 见:the 6th sino-us joint conference of chemical engineering. 北京. 2011-11-7.