BioChem - DOS

Significance evaluation of the effects of environmental factors on the lipid accumulation of Chlorella minutissima UTEX 2341 under low-nutrition heterotrophic condition

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

Cao, J.; Yuan, H.; Li, B.; Yang, J.

The effects of a variety of environmental factors on lipid accumulation of Chlorella minutissima UTEX 2341 under low-nutrition conditions were investigated. The growth of UTEX 2341 reached the exponential phase on the 1st day in low-nutrition medium. And the highest biomass productivity of 3.07gL<SUP>-1</SUP>d<SUP>-1</SUP> was achieved on the 2nd day. The optimum pH and temperature for lipid accumulation were 6 and 20<SUP>o</SUP>C respectively. 43.69gL<SUP>-1</SUP> of NaCl and 0.11mmolL<SUP>-1</SUP> of Fe(III) resulted in higher lipid content, analyzed by Design-Expert. And then under nitrogen starvation stress, the lipid content reached 22.84%. Meanwhile, the lipid yield was 2.5gL<SUP>-1</SUP>. The yield coefficient against carbon was 0.36gg<SUP>-1</SUP>, which was 4.68 times as much as that in OM medium. With the high proportion of C16 and C18 in the lipids, C. minutissima UTEX 2341 was proved to be a potential option for renewable biodiesel production.

2014

Elsevier Applied Science

0960-8524

152

pp.177-184

10.1016/j.biortech.2013.10.084

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART68367063

Microalgae; Heterotrophic cultivation; Environmental factors; Biofuel; Central Composite Design