Use of elephant grass (Pennisetum purpureum) acid hydrolysate for microbial oil production by Trichosporon cutaneum |
| |
Authors: | Xue-Fang Chen Chao Huang Lian Xiong Bo Wang Gao-Xiang Qi Xiao-Qing Lin |
| |
Affiliation: | 1. Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou, China;2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China;3. School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, China |
| |
Abstract: | Elephant grass (Pennisetum purpureum) dilute acid hydrolysate contains 34.6?g/L total sugars. The potential of lipid production by oleaginous yeast Trichosporon cutaneum grown on elephant grass acid hydrolysate was investigated for the first time. During the fermentation process on the elephant grass acid hydrolysate, glucose, xylose, and arabinose could be well utilized as carbon sources by T. cutaneum. Interestingly, xylose was almost no use before glucose was consumed completely. This illustrated that simultaneous saccharification of xylose and glucose by T. cutaneum did not occur on elephant grass acid hydrolysate. The highest biomass, lipid content, lipid yield, and lipid coefficient of T. cutaneum were measured after the sixth day of fermentation and were 22.76?g/L, 24.0%, 5.46?g/L, and 16.1%, respectively. Therefore, elephant grass is a promising raw material for microbial oil production by T. cutaneum. |
| |
Keywords: | Elephant grass (Pennisetum purpureum) elephant grass dilute acid hydrolysate Trichosporon cutaneum biodiesel Trichosporon cutaneum microbial oil production |
|
|