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学科主题: 物理化学
题名: On the mass and energy yields of heterotrophic lipid production
作者: Zhao ZB(赵宗保)
会议名称: 2009 International Conference for Bioeconomy
会议日期: 2009-6-26
出版日期: 2009-06-26
会议地点: 中国
其他题名: 异养油脂生产的质量和能量转化率
通讯作者: 赵宗保
部门归属: 十八室
主办者: 中华人民共和国科学技术部, 等
摘要: On the mass and energy yields of heterotrophic lipid production Zongbao Kent Zhao Dalian Institute of Chemical Physics, CAS, Dalian 116023, P. R. China Keywords: Biodiesel, microbial lipid, mass yield, energy yield, fermentation Abstract: Biodiesel, a mixture of long-chain fatty acid methyl esters made from vegetable oil and fats, is a renewable biofuel with outstanding combustion profile. It will be beneficial to meet ever-growing energy demanding and lessen the structural problem in liquid fuel consumption if biodiesel is widely applied in China. On the other hand, carbohydrates, either from starchy material or lignocellulosic biomass, are the most abundant renewable resources. In this context, it is pivotal to convert carbohydrates into products with similar properties to conventional fossil fuel. Microbial lipid production is an aerobic biochemical process that generates intracellular lipid using organic substrates. It is very important to understand the mass balance and energy balance. We did preliminary analysis of the lipid production process by oleaginous yeast Rhodosporidium toruloides Y4 using glucose as the sole carbon source. The relationships between energy yield, mass yield, lipid yield and cellular lipid content were established. We then compared the two typical biofuel-related biochemical processes, lipid production and ethanol fermentation. Some microorganisms can accumulate lipid to more than 20% of their biomass when carbohydrates or related carbon sources are metabolized. Microbial lipid, especially produced by yeast, 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 and an important topic for industrial biotechnology.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113952
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zhao ZB. On the mass and energy yields of heterotrophic lipid production[C]. 见:2009 International Conference for Bioeconomy. 中国. 2009-6-26.
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