期刊
RSC ADVANCES
卷 4, 期 66, 页码 34944-34949出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra01453g
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资金
- National Nature Science Foundation of China [81371223]
- Research Fund for the Doctoral Program of Higher Education of China [20122105110010]
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.
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