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Simultaneous improvement in production of microalgal biodiesel and high-value alpha-linolenic acid by a single regulator acetylcholine

文献类型: 外文期刊

作者: Parsaeimehr, Ali 1 ; Sun, Zhilan 1 ; Dou, Xiao 2 ; Chen, Yi-Feng 1 ;

作者机构: 1.Jiangsu Acad Agr Sci, Inst Biotechnol, Lab Biosyst Engn, Nanjing 210014, Jiangsu, Peoples R China

2.Targetong Energy Co Ltd, Nanjing 211800, Jiangsu, Peoples R China

关键词: Acetylcholine;Chlorella sorokiniana U2-9;Lipids;Alpha-linolenic acid;Biodiesel

期刊名称:BIOTECHNOLOGY FOR BIOFUELS ( 影响因子:6.04; 五年影响因子:6.485 )

ISSN: 1754-6834

年卷期: 2015 年 8 卷

页码:

收录情况: SCI

摘要: Background: Photoautotrophic microalgae are a promising avenue for sustained biodiesel production, but are compromised by low yields of biomass and lipids at present. We are developing a chemical approach to improve microalgal accumulation of feedstock lipids as well as high-value alpha-linolenic acid which in turn might provide a driving force for biodiesel production. Results: We demonstrate the effectiveness of the small bioactive molecule "acetylcholine" on accumulation of biomass, total lipids, and alpha-linolenic acid in Chlorella sorokiniana. The effectiveness exists in different species of Chlorella. Moreover, the precursor and analogs of acetylcholine display increased effectiveness at higher applied doses, with maximal increases by 126, 80, and 60% over controls for biomass, total lipids, and alpha-linolenic acid, respectively. Production of calculated biodiesel was also improved by the precursor and analogs of acetylcholine. The biodiesel quality affected by changes in microalgal fatty acid composition was addressed. Conclusion: The chemical approach described here could improve the lipid yield and biodiesel production of photoautotrophic microalgae if combined with current genetic approaches.

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