期刊
BIORESOURCE TECHNOLOGY
卷 132, 期 -, 页码 182-189出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.12.175
关键词
Lipid content; Fatty acids composition; Temperature; Microalgae
资金
- National Basic Research Program of China (973 Program) [2011CB200904]
- National Key Technologies RD Program [2011BAD14802]
- National Natural Science Foundation of China [21076080]
- National Special Fund for State Key Laboratory of Bioreactor Engineering [2060204]
- [GHME2011SW03]
For outdoor culture with light-dark cycle, the biomass and lipid losing at night resulted in lowering the biomass and lipid productivity. Previous studies focused on the contents of carbohydrate and protein in response to temperature for production of animal feed and nutritional supplements. In this study, the effects of temperature on the variations of biomass concentration, lipid content and fatty acids composition for production of biofuels were investigated under a light-dark cyclic culture. The results showed that 30 degrees C was the optimal daytime temperature for achieving high biomass and lipid; raising daytime temperature can lessen night biomass loss and stimulate lipid accumulation. Subsequently, outdoor culture strategy has been improved: keeping culture broth no less than 30 degrees C during the daytime. Consequently, the net biomass and lipid productivity were increased by 37.8% and 44.9% when compared to the former culture process in the same outdoor climatic conditions. (C) 2013 Elsevier Ltd. All rights reserved.
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