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Faife E.,Cuban Institute for Research on Sugarcane By Products ICIDCA | Otero M.A.,Cuban Institute for Research on Sugarcane By Products ICIDCA | Alvarez A.,Cuban Institute for Research on Sugarcane By Products ICIDCA | Pena M.A.,Cuban Institute for Research on Sugarcane By Products ICIDCA | And 3 more authors.
International Sugar Journal | Year: 2011

Different molasses/slops and slops/glycerol ratios were used as substrate to investigate single cell protein and total lipids production by five yeasts strains: Yarrowia lipolytica, Rh. mucilaginosa, S. cerevisiae, Rhodotorula glutinis and Candida vini. The media utilized were: a) 30:70 (molasses/slops) and; b) 30:70 (slops/glycerol) both on Chemical Oxygen Demand (COD) basis. The highest single cell protein production was obtained by Y. lipolytica (23.8 g/L) and C. vinis (24.2 g/L) both on slops/glycerol mixtures. COD reduction in both cases was higher than 40%. Highest lipid concentrations were achieved for Rh. glutinis (20%) on slops/glycerol media and C. vini (19%) in molasses/slops media. Glycerol, a waste from triacyl-glycerides trans-esterification, leads to a better results than cane molasses at equal COD contribution. The growth of Y. lipolytica on slops/glycerol mixtures yielded a carbon number fatty acid profile very similar to those expected for biodiesel according to ASTM standards.

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