Journal
INDIAN JOURNAL OF MICROBIOLOGY
Volume 55, Issue 4, Pages 415-422Publisher
SPRINGER
DOI: 10.1007/s12088-015-0533-9
Keywords
Microbial lipids; Fatty acids; Crude glycerol; Biodiesel
Categories
Funding
- State Research Foundation of Rio Grande do Sul (FAPERGS)
- Brazilian Council for Scientific and Technological Development (CNPq)
- Brazilian Federal Agency for the Support and Evaluation of Graduate Education (CAPES)
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In this work, 12 different yeast strains were evaluated to gauge their ability to accumulate lipids using raw glycerol as the main carbon source. Lipomyces lipofer NRRL Y-1155 stood out above the other strains, achieving 9.48 g/l biomass, 57.64 % lipid content and 5.46 g/l lipid production. The fatty acid profile was similar to vegetable oils commonly used in the synthesis of biodiesel, with the predominance of polyunsaturated acids, especially linoleic acid, reaching 68.3 % for Rhodotorula glutinis NRRL YB-252. The occurrence of palmitic acid (39.3 % for Lipomyces starkeyi NRRL Y-11557) was also notable. Thus, yeast biomass with high lipid content can be a sustainable and renewable alternative as a raw material for the biodiesel industry.
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