Microbial oil produced from biodiesel by-products could enhance overall production
Article
Article Title | Microbial oil produced from biodiesel by-products could enhance overall production |
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ERA Journal ID | 3454 |
Article Category | Article |
Authors | Kiran, Esra Uckun (Author), Trzcinski, Antoine (Author) and Webb, Colin (Author) |
Journal Title | Bioresource Technology |
Journal Citation | 129, pp. 650-654 |
Number of Pages | 5 |
Year | 2013 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0960-8524 |
1873-2976 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.biortech.2012.11.152 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0960852412019001 |
Abstract | Glycerol and rapeseed meal, two major by-products of biodiesel production, have been tested for possible use as low-cost raw materials for the production of microbial bio-oil using the oleaginous yeast Rhodosporidium toruloides. Using fed-batch fermentation with crude glycerol and a novel nitrogen rich nutrient source derived from rapeseed meal as feed, it was shown that 13 g/L lipids could be roduced, compared with 9.4 g/L when crude glycerol was used with yeast extract. When 100 g/L pure glycerol was used, the final lipid concentration was 19.7 g/L with the novel biomedium compared to 16.2 g/L for yeast extract. The novel biomedium also resulted in higher lipid yields (0.19 g lipid/g glycerol consumed compared to 0.12 g/L) suggesting it provides a better carbon to nitrogen balance for accumulating lipids. FAMEs produced from the microbial lipids indicated a high degree of unsaturation confirming that the fatty acids produced from the novel biomedium have potential for biodiesel production. |
Keywords | biodiesel; microbial bio-oil; rapeseed meal; crude glycerol; solid state fermentation |
ANZSRC Field of Research 2020 | 410404. Environmental management |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Manchester, United Kingdom |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q34v5/microbial-oil-produced-from-biodiesel-by-products-could-enhance-overall-production
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