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Microbial lipid production by the oleaginous yeast Cryptococcus curvatus O3 grown in fed-batch culture

文献类型： 外文期刊

作者： Zhang, Jie 1 ; Fang, Xu 2 ; Zhu, Xiao-Ling 3 ; Li, Yan 1 ; Xu, Hai-Peng 1 ; Zhao, Bao-Feng 1 ; Chen, Lei 1 ; Zhang, Xiao- 1 ;

作者机构： 1.Shandong Acad Sci, Energy Res Inst, Jinan 250014, Peoples R China

2.Shandong Univ, Natl Glycoengn Res Ctr, Jinan 250100, Peoples R China

3.Shandong Acad Agr Sci, Anim Sci & Vet Med Inst, Jinan 250100, Peoples R China

关键词： Biodiesel;Microbial lipids;Cryptococcus curvatus O3;Fed-batch culture;Stearic acid;Oleic acid

期刊名称：BIOMASS & BIOENERGY （ 影响因子：5.061； 五年影响因子：4.815 ）

ISSN： 0961-9534

年卷期： 2011 年 35 卷 5 期

页码：

收录情况： SCI

摘要： This study investigates the capability of the oleaginous yeast Cryptococcus curvatus O3 to synthesize microbial lipids using glucose as its sole carbon source. Both glucose concentration and varying nitrogen sources have a significant effect on cell growth and microbial lipid accumulation in batch and fed-batch cultures. When cultivated in a shaking flask at 30 degrees C with glucose as sole carbon source, the cellular biomass and lipid content reached 51.8 kg m(-3) and 651 g kg(-1), respectively. The fed-batch culture in a 30 x 10(-3) m(3) stirred-tank fermentor run for 185 h produced a cellular biomass, lipid content, and lipid productivity rate of up to 104.1 kg m(-3), 827 g kg(-1), and 0.47 kg m(-3) h(-1), respectively. These data indicate that C. curvatus O3 can be used as an ideal oleaginous yeast for microbial lipid production. Gas chromatography analysis of the synthesized microbial lipids revealed that the major constituents are long-chain fatty acids, such as palmitic acid, stearic acid, oleic acid, and linoleic acid. The results suggest that the microbial lipids produced by C. curvatus O3 can be used to produce biodiesel. (C) 2011 Elsevier Ltd. All rights reserved.

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