Repeated-batch production of omega-3 enriched biomass of Chlorella sorokiniana via calcium-induced homeoviscous adaptation.

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ID: 96793
2020
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Abstract
This study aimed to improve valuable omega-3 fatty acids production in freshwater microalgae at normal temperature by inducing homeoviscous adaptation using CaCl, which could have a role in decreasing the cellular membrane fluidity followed by increasing the rigidity of cell wall and membranes. At 10 mM CaCl, simultaneous biomass and lipid production was obtained by Ca-based single strategy without considerable sacrifice of cellular logarithmic growth in Chlorella sorokiniana. The cells cultured at 10 mM CaCl (1-stage) showed relatively high levels of cellular membrane fluidity, caused by increased content in unsaturated fatty acids, compared to the conventional culture strategy (2-stage). Moreover, when this process was recycled by repeated-batch fermentation, the EPA productivity of 1-stage was 4.338 mg L d, conspicuously increased by over 1300% compared to 2-stage. This strategy enhances the valuable omega-3 production, which can be commercially used for mass cultivation of omega-3-enriched biomass in the microalgae industry.
Reference Key
shim2020repeatedbatchbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Shim, Sung Jin;Hong, Min Eui;Chang, Won Seok;Sim, Sang Jun;
Journal Bioresource technology
Year 2020
DOI
S0960-8524(20)30213-3
URL
Keywords
omega-3 fatty acids eicosapentaenoic acid (epa) chlorella sorokiniana ca(2+)-based 1-stage recycling strategy ca(2+)-induced homeoviscous adaptation

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