Improved Productivity of Neutral Lipids in Chlorella sp. A2 by Minimal Nitrogen Supply.

ABSTRACT: Nitrogen starvation is an efficient environmental pressure for increasing lipid accumulation in microalgae, but it could also significantly lower the biomass productivity, resulting in lower lipid productivity. In this study, green alga Chlorella sp. A2 was cultivated by using a minimal nitrogen supply strategy under both laboratory and outdoor cultivation conditions to evaluate biomass accumulation and lipid production. Results showed that minimal nitrogen supply could promote neutral lipid accumulation of Chlorella sp. A2 without a significant negative effect on cell growth. In laboratory cultivation mode, alga cells cultured with 18 mg L(-1) d(-1) urea addition could generate 74 and 416% (w/w) more neutral lipid productivity than cells cultured with regular BG11 and nitrogen starvation

SUBMITTER: Zhu J 

PROVIDER: S-EPMC4838625 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature