Document Detail

Microbial oil produced from biodiesel by-products could enhance overall production.
MedLine Citation:
PMID:  23298770     Owner:  NLM     Status:  Publisher    
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 13g/L lipids could be produced, compared with 9.4g/L when crude glycerol was used with yeast extract. When 100g/L pure glycerol was used, the final lipid concentration was 19.7g/L with the novel biomedium compared to 16.2g/L for yeast extract. The novel biomedium also resulted in higher lipid yields (0.19g lipid/g glycerol consumed compared to 0.12g/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.
Esra Uçkun Kiran; Antoine Trzcinski; Colin Webb
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-17
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2013-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
School of Chemical Engineering and Analytical Science, University of Manchester, UK; Middle East Technical University, Biotechnology Department, 06531 Ankara, Turkey. Electronic address:
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