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学科主题: 生物化学工程
题名: Increased Lipid Production of the Marine Oleaginous Microalgae Isochrysis zhangjiangensis (Chrysophyta) by Nitrogen Supplement
作者: Feng DN(冯迪娜) ;  Chen ZA(陈兆安) ;  Cao XP(曹旭鹏) ;  Xue S(薛松)
会议文集: 1st International Conference on Algal Biomass ,Biofuels and Bioproducts 2011
会议名称: 1st International Conference on Algal Biomass ,Biofuels and Bioproducts 2011
会议日期: 2011-7-17
出版日期: 2011
会议地点: 圣路易斯
其他题名: 利用氮源补加提高海洋产油微藻湛江等鞭金藻(金藻属)的油脂生产
通讯作者: 薛松
出版者: 待补充
出版地: 待补充
合作性质: 墙报
部门归属: 1812
主办者: Elsevier Inc.
摘要: The most effective culture method is the limitation of the major nutrient nitrogen, termed the ‘‘fattening’’ strategy. However, many high lipid-accumulating microalgal strains show low growth under nitrogen-limiting conditions, which causes little improvement in lipid productivity, even possible decreases. The ideal microalgal strain should be able to produce lipids, without a decrease in biomass. Possibly, this algal strain can accumulate lipids under the nitrogen-repletion conditions associated with high biomass Isochrysis. zhangjiangensis, a marine microalgal strain, is taxonomically very close to I. galbana. We hypothesized that I. zhangjiangensis is able to accumulate carbohydrate in nitrogen-limitating conditions in a similar manner to I. galbana. We wanted to test whether I. zhangjiangensis could accumulate lipid in a nitrogen repletion environment. Effects of nitrate feeding interval times on the cell growth and lipid accumulation of marine microalgae I. zhangjiangensis was studied. It was found that the biomass and lipid content of the 24 h interval feeding treatment were the highest. A two-stage culture model revealed that the algal cell of I. zhangjiangensis can accumulate lipids during the nitrogen-repletion conditions. The maximum lipid content of 53% was obtained through extremely high nitrate concentrations added to the medium. Owing to the special characteristic of lipid accumulation, I. zhangjiangensis is an ideal algal strain for producing biodiesel using N-rich wastewater.
英文摘要: The most effective culture method is the limitation of the major nutrient nitrogen, termed the ‘‘fattening’’ strategy. However, many high lipid-accumulating microalgal strains show low growth under nitrogen-limiting conditions, which causes little improvement in lipid productivity, even possible decreases. The ideal microalgal strain should be able to produce lipids, without a decrease in biomass. Possibly, this algal strain can accumulate lipids under the nitrogen-repletion conditions associated with high biomass Isochrysis. zhangjiangensis, a marine microalgal strain, is taxonomically very close to I. galbana. We hypothesized that I. zhangjiangensis is able to accumulate carbohydrate in nitrogen-limitating conditions in a similar manner to I. galbana. We wanted to test whether I. zhangjiangensis could accumulate lipid in a nitrogen repletion environment. Effects of nitrate feeding interval times on the cell growth and lipid accumulation of marine microalgae I. zhangjiangensis was studied. It was found that the biomass and lipid content of the 24 h interval feeding treatment were the highest. A two-stage culture model revealed that the algal cell of I. zhangjiangensis can accumulate lipids during the nitrogen-repletion conditions. The maximum lipid content of 53% was obtained through extremely high nitrate concentrations added to the medium. Owing to the special characteristic of lipid accumulation, I. zhangjiangensis is an ideal algal strain for producing biodiesel using N-rich wastewater.
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115958
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:
Feng DN,Chen ZA,Cao XP,et al. Increased Lipid Production of the Marine Oleaginous Microalgae Isochrysis zhangjiangensis (Chrysophyta) by Nitrogen Supplement[C]. 见:1st International Conference on Algal Biomass ,Biofuels and Bioproducts 2011. 圣路易斯. 2011-7-17.
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