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题名: Identification of carbohydrates as the major carbon sink of the marine microalga Isochrysis zhangjiangensis (Haptophyta) and optimization of its productivity by nitrogen manipulation
作者: Wang, Hai-Tao1, 2;  Yao, Chang-Hong1;  Ai, Jiang-Ning1;  Cao, Xu-Peng1;  Xue, Song1;  Wang, Wei-liang3
关键词: Isochrysis zhangjiangensis ;  Carbohydrate production ;  Nitrogen limitation ;  Microalga carbohydrate
刊名: BIORESOURCE TECHNOLOGY
发表日期: 2014-11-01
DOI: 10.1016/j.biortech.2014.08.090
卷: 171, 页:298-304
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine ;  Technology
类目[WOS]: Agricultural Engineering ;  Biotechnology & Applied Microbiology ;  Energy & Fuels
研究领域[WOS]: Agriculture ;  Biotechnology & Applied Microbiology ;  Energy & Fuels
英文摘要: Microalgae represent a potential feedstock for biofuel production. During cultivation under nitrogen-depleted conditions, carbohydrates, rather than neutral lipids, were the major carbon sink of the marine microalga Isochrysis zhangjiangensis (Haptophyta). Carbohydrates reached maximum levels of 21.2 pg cell(-1) on day 5, which was an increase of more than 7-fold from day 1, while neutral lipids simultaneously increased 1.9-fold from 4.0 to 7.6 pg cell(-1) during the ten-day nitrogen-depleted cultivation. The carbohydrate productivity of I. zhangjiangensis was improved by optimization of the nitrate supply mode. The maximum carbohydrate concentration was 0.95 g L-1 under batch cultivation, with an initial nitrogen concentration of 31.0 mg L-1, which was 2.4-fold greater than that achieved under nitrogen-depleted conditions. High performance liquid chromatography (HPLC) analysis showed that the accumulated carbohydrate in I. zhangjiangensis was composed of glucose. These results show that I. zhangjiangensis represents an ideal carbohydrate-enriched bioresource for biofuel production. (C) 2014 Elsevier Ltd. All rights reserved.
关键词[WOS]: OBLIQUUS CNW-N ;  CHLAMYDOMONAS-REINHARDTII ;  TETRASELMIS-SUBCORDIFORMIS ;  SEMICONTINUOUS CULTURES ;  BIOCHEMICAL-COMPOSITION ;  NUTRIENT LIMITATION ;  STARCH PRODUCTION ;  OIL ACCUMULATION ;  LIPID-CONTENT ;  CO2 FIXATION
语种: 英语
WOS记录号: WOS:000343091700043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145913
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Marine Bioprod Engn Grp, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

Recommended Citation:
Wang, Hai-Tao,Yao, Chang-Hong,Ai, Jiang-Ning,et al. Identification of carbohydrates as the major carbon sink of the marine microalga Isochrysis zhangjiangensis (Haptophyta) and optimization of its productivity by nitrogen manipulation[J]. BIORESOURCE TECHNOLOGY,2014,171:298-304.
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