title: Bioconversion of Raw Glycerol Generated from the Synthesis of Biodiesel by Different Oleaginous Yeasts: Lipid Content and Fatty Acid Profile of Biomass.
abstract: 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.
authors.affiliation: School of Chemistry and Food, Federal University of Rio Grande, PO Box 474, Rio Grande, RS 96203-900 Brazil.
authors.forename: Franciela
authors.initials: F
authors.lastname: Spier
authors.affiliation: School of Chemistry and Food, Federal University of Rio Grande, PO Box 474, Rio Grande, RS 96203-900 Brazil.
authors.forename: Jaqueline G
authors.initials: JG
authors.lastname: Buffon
authors.affiliation: School of Chemistry and Food, Federal University of Rio Grande, PO Box 474, Rio Grande, RS 96203-900 Brazil.
authors.forename: Carlos A V
authors.initials: CA
authors.lastname: Burkert
keywords: Biodiesel; Crude glycerol; Fatty acids; Microbial lipids