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Enhanced Accumulation of Carbohydrate and Starch in Chlorella zofingiensis Induced by Nitrogen Starvation
Zhu, Shunni1; Wang, Yajie1,2; Huang, Wei1,2; Xu, Jin1; Wang, Zhongming1; Xu, Jingliang1; Yuan, Zhenhong1,3
2014-12-01
发表期刊APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
卷号174期号:7页码:2435-2445
摘要Though less attention has been paid to microalgae as a feedstock for bioethanol production, many microalgae seem to have this potential since they contain no lignin, minor hemicellulose, and abundant carbohydrate. The objective of this study was to investigate the effect of nitrogen starvation on carbohydrate and starch accumulation in green microalga Chlorella zofingiensis and assess the feasibility of using this microalga as a bioethanol feedstock. The results showed that the specific growth rate under nitrogen starvation (0.48 day(-1)) was much lower than that under nitrogen repletion (1.02 day(-1)). However, nitrogen starvation quickly induced the accumulation of carbohydrate, especially starch. After merely 1 day of nitrogen starvation, carbohydrate and starch increased 37 % and 4.7-fold, respectively. The highest carbohydrate content reached 66.9 % of dry weight (DW), and 66.7 % of this was starch. In order to obtain enough carbohydrate productivities for bioethanol production, two-stage cultivation strategy was implemented and found to be effective for enhancing biomass, carbohydrate, and starch simultaneously. The optimal biomass, carbohydrate, and starch productivities of C. zofingiensis were obtained after 5 days of cultivation, and their values were 699, 407, and 268 mg L-1 day(-1), respectively.
文章类型Article
关键词Chlorella Zofingiensis Nitrogen Starvation Starch Carbohydrate Bioethanol
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1007/s12010-014-1183-9
研究领域[WOS]Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology
关键词[WOS]OBLIQUUS CNW-N ; MICROALGA TETRASELMIS-SUBCORDIFORMIS ; NUTRIENT LIMITATION ; CO2 FIXATION ; PYROPHOSPHORYLASE ; CULTIVATION ; VULGARIS ; GROWTH
收录类别SCI
语种英语
WOS类目Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology
WOS记录号WOS:000345331100008
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10755
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
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Zhu, Shunni,Wang, Yajie,Huang, Wei,et al. Enhanced Accumulation of Carbohydrate and Starch in Chlorella zofingiensis Induced by Nitrogen Starvation[J]. APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY,2014,174(7):2435-2445.
APA Zhu, Shunni.,Wang, Yajie.,Huang, Wei.,Xu, Jin.,Wang, Zhongming.,...&Yuan, Zhenhong.(2014).Enhanced Accumulation of Carbohydrate and Starch in Chlorella zofingiensis Induced by Nitrogen Starvation.APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY,174(7),2435-2445.
MLA Zhu, Shunni,et al."Enhanced Accumulation of Carbohydrate and Starch in Chlorella zofingiensis Induced by Nitrogen Starvation".APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY 174.7(2014):2435-2445.
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