Journal
APPLIED ENERGY
Volume 88, Issue 1, Pages 138-142Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2010.07.028
Keywords
Trichosporon capitatum; Microbial oil; High oleic acid content; Cane molasses; Biodiesel
Categories
Funding
- Industry. Education and Academy [2008A010700006]
- Science and Technology Project of Guangdong Province [200913080701085]
- SCUT [2009zm0199, 2009zz0026, 2009zz0018]
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology [200823]
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Microbial oils with high unsaturated fatty acids content, especially oleic acid content, are good feedstock for high quality biodiesel production. Trichosporon capitatum was found to accumulate lipid with around 80% oleic acid and 89% total unsaturated fatty acids content on nitrogen-limited medium. In order to improve its lipid yield, effects of medium components and culture conditions on cell growth and lipid accumulation were investigated. Optimization of media resulted in a 61% increase in the lipid yield of T. capitatum after cultivation at 28 degrees C and 160 rpm for 6 days. In addition, T. capitatum could grow well on cane molasses and afford a lipid yield comparable to that on synthetic nitrogen-limited medium. The biodiesel from the microbial oil produced by T. capitatum on cane molasses displayed a low cold filter plugging point (-15 degrees C), and so T. capitatum might be a promising strain to provide lipid suitable for high quality biodiesel production. (C) 2010 Elsevier Ltd. All rights reserved.
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