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学科主题物理化学
Biodiesel-oriented microbial lipid research: Recent progress
Zhao ZB(赵宗保); Hu CM(胡翠敏); Wu SG(吴思国); Shen HW(沈宏伟)
会议名称2010 World Bioenergy Symposium
会议日期2010-9-15
2010-09-15
会议地点中国
页码39/2
部门归属十八室
主办者清华大学
英文摘要Some microorganisms can accumulate lipid to more than 20 wt% of their biomass when carbohydrates or related carbon sources are metabolized. Microbial lipid, especially produced by yeasts, consists mainly of triacylglycerides with fatty acid compositional profile similar to those of the commercial vegetable oils. Because it can be obtained from renewable raw materials, and be produced continuously with no extensive arable land requirement, microbial lipid has been considered as potential feedstock for biodiesel industry. Microbial lipid production is an aerobic biochemical process that generates intracellular lipid using organic substrates. During the past few years, we have advocated the proposal of Biomass-to-Biodiesel that produces biodiesel using lignocellulosic materials. This proposal included three steps, 1) Hydrolysis of lignocellulose to carbohydrates; 2) Lipid production with oleaginous microorganisms; and 3) Transesterification of microbial lipid to biodiesel. We identified a hand of outstanding oleaginous yeasts, including Rhodosporidium toruloides, Lipomyces starkeyi, and Cryptococcus curvatus. These yeasts produced microbial lipid using materials including glucose, xylose, N-acetylglucosamine, raw glycerol, corn stalk hydrolysates and Jerusalem artichoke juice. We optimized lipid production processes. When using the yeast R. toruloides Y4 as the lipid producer in a 15-L bioreactor, we achieved lipid content, production titer and lipid productivity of over 65 wt%, 100 g/L and 0.8 g/l/h, respectively. We also demonstrated that biodiesel can be produced using either oleaginous microbial biomass or microbial lipid as the feedstock. Taken together, we will report the most recent progresses in biodiesel-oriented microbial lipid research in Dalian Institute of Chemical Physics, Chinese Academy of Sciences.
语种中文
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/114502
专题中国科学院大连化学物理研究所
通讯作者Zhao ZB(赵宗保)
推荐引用方式
GB/T 7714
Zhao ZB,Hu CM,Wu SG,et al. Biodiesel-oriented microbial lipid research: Recent progress[C],2010:39/2.
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