BioChem - DOS

High productivity cultivation of a heat-resistant microalga Chlorella sorokiniana for biofuel production

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Li, T.; Zheng, Y.; Yu, L.; Chen, S.

To augment biomass and lipid productivities of heterotrophic cultured microalgae Chlorella sorokiniana, the influence of environmental temperature and medium factors, such as carbon source, nitrogen source, and their initial concentrations was investigated in this study. The microalga C. sorokiniana could tolerate up to 42<SUP>o</SUP>C and showed the highest growth rate of 1.60d<SUP>-1</SUP> at 37<SUP>o</SUP>C. The maximum dry cell weight (DCW) and corresponding lipid concentration was obtained with 80gL<SUP>-1</SUP> of initial glucose and 4gL<SUP>-1</SUP> of initial KNO<SUB>3</SUB> at 37<SUP>o</SUP>C. In 5-L batch fermentation, the DCW increased dramatically from 0.9gL<SUP>-1</SUP> to 37.6gL<SUP>-1</SUP> in the first 72h cultivation, with the DCW productivity of 12.2gL<SUP>-1</SUP>d<SUP>-1</SUP>. The maximum lipid content of 31.5% was achieved in 96h and the lipid productivity was 2.9gL<SUP>-1</SUP>d<SUP>-1</SUP>. The results showed C. sorokiniana could be a promising strain for biofuel production.

2013

Elsevier Applied Science

0960-8524

131

pp.60-67

10.1016/j.biortech.2012.11.121

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65597236

Chlorella sorokiniana; Algae; Heterotrophic; Heat-resistant; Lipid