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学科主题: 物理化学
题名: Effects of biomass hydrolysis by-products on oleaginous yeast Rhodosporidium toruloides
作者: Hu CM(胡翠敏) ;  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: Feedstock supply presents the major hurdle for large-volume biodiesel industry, because triacylglycerides (TAG) productivity by oil plants is quite limited. It is pivotal to develop non-conventional TAG production method. Lipid fermentation using oleaginous microorganisms can be an alternative, as these microbes are able to assimilate carbohydrates derived from lignocellulosic biomass [1]. For example, Rhodosporidium toruloides Y4 were found to accumulate large quantity of intracellular lipids with very high cell density [2]. Moreover, microbial lipids closely resemble vegetable oils in that they are composed of C16 and C18 series long-chain fatty acids [3]. However, biomass hydrolysis produces monosaccharides along with toxic by-products [4]. This work investigated the effects of these inhibitors on lipid fermentation by R. toruloides Y4. Our data showed that acetic acid, hydroxylmethylfurfural and syringaldehyde had slightly inhibitory effects; vanillin and p-hydroxybenzaldehyde were toxic at concentration over 10 and 12 mM, respectively; and that furfural gave the most toxic effect. Cell growth was inhibited by about 50% in the presence of 1 mM furfural. Furthermore, furfuryl alcohol and furoic acid showed similar inhibitory effects. Compositional analysis confirmed that the majority were C16 and C18 series long-chain fatty acids, suggesting that those inhibitors had little effects on the biosynthetic pathways for lipids.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113178
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:
Hu CM,Zhao ZB. Effects of biomass hydrolysis by-products on oleaginous yeast Rhodosporidium toruloides[C]. 见:13th International Biotechnology Symposium and Exhibition. 中国. 2008-10-12.
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