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Issue 66, 2014
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Microbial lipid production by oleaginous yeast in D-xylose solution using a two-stage culture mode

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Abstract

The economical production of biodiesel from lignocellulose hydrolysates requires a robust D-xylose fermentation path. The present work found that Lipomyces starkeyi AS 2.1560 and Rhodosporidium toruloides AS 2.1389 could produce micro-lipid effectively from D-xylose solution by a two-stage culture mode. Results demonstrated that both L. starkeyi and R. toruloides could achieve high lipid production in xylose solution. High cell density fermentation was carried out by a feed-batch fermentation mode. After fermentation for 48 h in a bioreactor using unsterile xylose solution by L. starkeyi, the biomass, lipid and lipid content reached 97.4 g L−1, 63.9 g L−1, and 65.5%, respectively. Accordingly, the lipid productivity reached 1.3 g L−1 h−1 in the second stage. And the overall lipid productivity was 0.55 g L−1 h−1. Therefore, L. starkeyi and R. toruloides are highly effective D-xylose-fermenting oleaginous yeasts for lipid production in xylose solution. The two-stage culture method should provide a new opportunity to make the industrial production of biodiesel possible in the future.

Graphical abstract: Microbial lipid production by oleaginous yeast in d-xylose solution using a two-stage culture mode

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Publication details

The article was received on 19 Feb 2014, accepted on 30 Jul 2014 and first published on 30 Jul 2014


Article type: Paper
DOI: 10.1039/C4RA01453G
Citation: RSC Adv., 2014,4, 34944-34949
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    Microbial lipid production by oleaginous yeast in D-xylose solution using a two-stage culture mode

    J. Lin, S. Li, M. Sun, C. Zhang, W. Yang, Z. Zhang, X. Li and S. Li, RSC Adv., 2014, 4, 34944
    DOI: 10.1039/C4RA01453G

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