LIPIDS ACCUMULATION BY OLEAGINOUS YEASTS USING MOLASSES MEDIUM AS BIODIESEL PRODUCTION
Keywords:
Biodiesel, lipid, molasses, oleaginous yeastAbstract
Oleaginous yeasts show promise as a feedstock to satisfy the current demand for biodiesel production. They can utilize a large number of cost-effective renewable substrates for growth and lipid accumulation. The lipid production potential of eight isolated oleaginous yeasts was investigated under molasses medium (12%w/v molasses concentration) with pH 5.5 at 30C for 144 h Rhodotorula mucilaginosa BJMK43 gave highest lipid content was determined as 65.48%w/v . Main cellular fatty acids of the yeast were oleic, palmitic, linoleic and stearic. Yeast lipids are a promising feedstock for biodiesel production due to their high content of C16 and C18 fatty acids. Lipid composition was found to be similar to that of vegetable oils. Results demonstrated the feasibility of simultaneous biovalorization of volatile fatty acids and glycerol, as cheap industrial by-products.
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