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|Title:||Microbial oil produced from biodiesel by-products could enhance overall production||Authors:||Uçkun Kiran, Esra
|Keywords:||DRNTU::Engineering::Chemical engineering::Biotechnology||Issue Date:||2012||Source:||Uçkun Kiran, E., Trzcinski, A., & Webb, C. (2013). Microbial oil produced from biodiesel by-products could enhance overall production. Bioresource Technology, 129, 650-654.||Series/Report no.:||Bioresource technology||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 produced, 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.||URI:||https://hdl.handle.net/10356/96617
|ISSN:||0960-8524||DOI:||http://dx.doi.org/10.1016/j.biortech.2012.11.152||Rights:||© 2012 Elsevier Ltd.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||IESE Journal Articles|
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