Improving Cell Growth and Lipid Accumulation in Green Microalgae Chlorella sp via UV Irradiation
文献类型： 外文期刊
作者： Liu, Shuyu 1 ; Zhao, Yueping 1 ; Liu, Li 3 ; Ao, Xiyong 1 ; Ma, Liyan 4 ; Wu, Minghong 1 ; Ma, Fang 2 ;
作者机构： 1.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China
2.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
3.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA
4.Chinese Acad Fishery Sci, Key Lab East China Sea & Ocean Fishery Resources, Minist Agr, Shanghai 200090, Peoples R China
关键词： Microalgae;Radiation;UV mutagenesis;Lipid;Biodiesel
期刊名称：APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY （ 影响因子：2.926； 五年影响因子：2.685 ）
ISSN：
年卷期：
页码：
收录情况： SCI
摘要： Microalgae with high biomass and high lipid content are the ideal feedstock for biodiesel production. To obtain such microalgae, ultraviolet (UV) irradiation was applied to Chlorella sp. to induce mutagenesis. The growth characteristics, total nitrogen (TN), and biochemical compositions of the control and UV mutation strains were analyzed. Compared to the control strain, the biomass for the UV mutation strain was 7.6 % higher and it presented a higher growth rate. The lipid content of the UV mutation strain showed different levels of increase and reached the maximum value of 28.1 % on day 15. Furthermore, the lipid productivity of the UV mutation strain showed a desired increase. The nitrogen consumption and Acetyl-CoA carboxylase (ACC) activity contributed to the lipid production by UV. All these results indicate that UV mutagenesis is an efficient method to improve probability for using Chlorella sp. as the potential raw material for biodiesel production.
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