期刊
BIORESOURCE TECHNOLOGY
卷 101, 期 20, 页码 7988-7990出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.05.054
关键词
Yeast; Biodiesel; Waste molasses; Microbial oil
资金
- Research Foundation of Ankara University [09B4240007]
- Scientific and Technological Research Council of Turkey (TUBITAK-BIDEB)
In this article the high lipid accumulation potential of Candida lipolytica, Candida tropicalis and Rhodotorula mucilaginosa cells were shown in molasses medium. Four different pH values were examined (4-7) to discover the optimum lipid accumulation medium. Varied concentrations of (NH4)(2)SO4 (0.5, 1.0, 1.5 g/L) and molasses (6%, 8%, 10%) were tested to find the optimum carbon and nitrogen amounts for the highest cellular lipid production. It is shown that the maximum lipid content could be achieved in the medium containing 8% molasses solution and 1.0 g/L (NH4)(2)SO4 at pH 5 after four days of incubation time. The maximum lipid contents and methyl ester yields were measured as 59.9% and 84.9% for C. lipolytica, 46.8% and 93.2% for C. tropicalis, 69.5% and 92.3% for R. mucilaginosa. Because of the dominant fatty acids were C16 and C18 in the lipids of yeast cells, these crude lipids could be promising feedstock for biodiesel production. (c) 2010 Elsevier Ltd. All rights reserved.
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