文献类型：期刊文献

英文题名：Lipid fermentation of corncob residues hydrolysate by oleaginous yeast Trichosporon cutaneum

作者：Gao, Qiuqiang[1];Cui, Zhenyang[1];Zhang, Jian[1];Bao, Jie[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：152

起止页码：552

外文期刊名：BIORESOURCE TECHNOLOGY

收录：;EI(收录号：20140117161066);WOS:【SCI-EXPANDED(收录号:WOS:000331460400078)】；

基金：This research was supported by the National Basic Researcsh Program of China (2011CB707406), the Natural Science Foundation of China (31300070/21306048), the China Postdoctoral Science Foundation (2012M520850), the Fundamental Research Funds for the Central Universities of China (WF1314036/0913005/1114054/1214025), the Open Funding Project of the State Key Laboratory of Bioreactor Engineering.

语种：英文

外文关键词：Microbial lipid; Corncob residues (CCR); Trichosporon cutaneum; Lignocellulose; Lipid titer

摘要：Corncob residues (CCR) are cellulose residues of corncob after xylan (hemicellulose) is extracted for production of xylitol. Here, an oleaginous yeast Trichosporon cutaneum ACCC 20271 was screened for lipid fermentation using CCR hydrolysate. The initial carbon-to-nitrogen molar ratio (C/N ratio) and the initial sugar concentration of the CCR hydrolysate were investigated in the lipid fermentation of T. cutaneum ACCC 20271. A C/N ratio gradient was generated by changing the corn steep liquor (CSL) addition and an optimal C/N ratio of 49.3 was obtained. The different initial sugar concentration was obtained by changing the cellulase amount and the lipid titer was enhanced by the increased sugar concentration. To our knowledge, this is the first report on using CCR as the feedstock for lipid fermentation. The lipid titer of 12.3 g/L and dry cell weight (DCW) of 38.4 g/L were the highest values among the studies using lignocellulose for lipid production. (C) 2013 Elsevier Ltd. All rights reserved.