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Co-fermentation of a sugar mixture for microbial lipid production in a two-stage fermentation mode under non-sterile conditions

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Abstract

The economical production of biodiesel from lignocellulose requires an effective co-fermentation of lignocellulose-derived sugars, such as glucose and xylose. Our present work discovered that Lipomyces starkeyi AS 2.1560 could produce microbial lipid effectively from co-fermentation of glucose and xylose in a two-stage culture mode under non-sterile conditions. High lipid production was achieved by a feed-batch fermentation process without sterility in the second fermentation stage. After incubation for 46 h in a bioreactor utilizing unsterile glucose and xylose solution, the cell biomass, lipid and lipid content reached 98.3 g Lāˆ’1, 62.7 g Lāˆ’1 and 63.8%, respectively. The results showed that the two-stage fermentation method should be a promising process to produce lipid from lignocellulose hydrolysates.

Graphical abstract: Co-fermentation of a sugar mixture for microbial lipid production in a two-stage fermentation mode under non-sterile conditions

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Article information


Submitted
01 Jan 2020
Accepted
01 Mar 2020
First published
10 Mar 2020

Sustainable Energy Fuels, 2020, Advance Article
Article type
Paper

Co-fermentation of a sugar mixture for microbial lipid production in a two-stage fermentation mode under non-sterile conditions

W. Liu, W. Mao, C. Zhang, X. Lu, X. Xiao, Z. Zhao and J. Lin, Sustainable Energy Fuels, 2020, Advance Article , DOI: 10.1039/D0SE00003E

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