Isolation and characterization of novel Chlorella species with cold resistance and high lipid accumulation for biodiesel production.

In this study, two novel Chlorella strains (ABC-002, ABC-008) were isolated from a freshwater lake in South Korea during the winter season and were examined for possible use in the biofuel production process. The comparison of ABC-002 and ABC-008 strains with Chlorella vulgaris UTEX265 under two different temperatures (10 °C, 25 °C) revealed their cold-tolerant phenotypes as well as high biomass yields. The maximum quantum yields of UTEX265, ABC-002, and ABC-008 at 10 °C were 0.5594, 0.6747, and 0.7150, respectively, providing evidence of the relatively higher cold resistance capabilities of these two strains. Furthermore, both the biomass yields and lipid contents of the two novel strains were found to be higher than those of UTEX265; the overall lipid productivities of ABC-002 and ABC-008 were 1.7 ~ 2.8 fold and 1.6 ~ 4.2 fold higher compared to that of UTEX265, respectively. Thus, the high biomass and lipid productivity over a wide range of temperatures indicate that C. vulgaris ABC-002 and ABC-008 are promising candidates for applications in biofuel productions via outdoor biomass cultivation. PMID: 31154744 [PubMed - as supplied by publisher]
Source: Journal of Microbiology and Biotechnology - Category: Biotechnology Authors: Tags: J Microbiol Biotechnol Source Type: research