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学科主题: 物理化学
题名: BM2BD: Towards a sustainable biodiesel industry
作者: Zhao ZB(赵宗保)
会议名称: 13th International Biotechnology Symposium and Exhibition
会议日期: 2008-10-12
出版日期: 2008-10-12
会议地点: 中国
通讯作者: 赵宗保
ISSN: 0168-1656
部门归属: 十八室
主办者: 中国科学院,中国工程院,中国教育部,中国科技部
摘要: Biodiesel, technically defined as alkyl esters of long-chain fatty acids, is considered as an excellent renewable energy carrier. It is now produced through transesterification of triacylglycerides (TAG) obtained from plant seeds or animal tissues. Feedstock for biodiesel has been included rapeseed oil, soybean oil and palm oil, etc. However, booming biodiesel production has put food and traditional oleochemical industry sectors in threat. It is apparently pivotal to develop non-conventional technology for production of triacylglycerides. Lipids production through fermentation using oleaginous microorganisms can be an alternative way to the traditional oil crop-based practice [1]. Many molds, yeasts and algae exhibit a capacity to assimilate carbohydrates and to accumulate intracellular lipids as high as over 70% (w/w). The major microbial lipids closely resemble vegetable oils in that they are composed of C16 and C18 series long-chain fatty acids. Moreover, it is well documented that oleaginous microbes can metabolize both hexoses and pentoses present in lignocellulosic biomass and other cheap raw materials [2]. Scientists of Dalian Institutes of Chemical Physics, CAS, have advocated the proposal of “biomass-to-biodiesel” (BM2BD) that produces biodiesel using lignocellulosic materials [3]. This proposal included three stages, 1) Hydrolysis of lignocellulose to carbohydrates; 2) Fermentation with oleaginous microbes; and 3) Transesterification of microbial oil to biodiesel. The BM2BD strategy can be operated continuously and with no extensive arable land requirement. Moreover, by utilization of lignocellulosic biomass, it is no longer competing with food and oleochemical industry for raw materials. Lipid fermentation processes now achieved cellular lipid and biomass of over 65% (w/w) and 100 g/L, respectively [4]. Other renewable materials, such as the tuber of Helianthus tuberosus and the shell of shrimp, have also been employed as feedstock for TAG fermentation. In parallel, researchers also obtained in-depth genetic and metabolic information for these oleaginous yeasts, which will facilitate further strain improvement. Apparently, BM2BD approach could produce microbial oil as alternative feedstock, which is crucial for a sustainable biodiesel industry.
语种: 中文
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内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113182
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. BM2BD: Towards a sustainable biodiesel industry[C]. 见:13th International Biotechnology Symposium and Exhibition. 中国. 2008-10-12.
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