title: Changes of biomass, lipid content and fatty acids composition under a light-dark cyclic culture of Chlorella pyrenoidosa in response to different temperature.
abstract: 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 °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 °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.
authors: Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China. sophyfeifei@126.com
authors: Feifei
authors: F
authors: Han
authors: Weiliang
authors: W
authors: Wang
authors: Yuanguang
authors: Y
authors: Li
authors: Guomin
authors: G
authors: Shen
authors: Minxi
authors: M
authors: Wan
authors: Jun
authors: J
authors: Wang
mesh_terms: D000704:Analysis of Variance; D056804:Biofuels; D018533:Biomass; D002708:Chlorella / Q000378:metabolism*; D005227:Fatty Acids / Q000096:biosynthesis*; D008055:Lipids / Q000096:biosynthesis*; D017440:Photoperiod; D013696:Temperature
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D008055:Lipids