Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions
- 13k Downloads
Biomass and lipid productivities of Chlorella vulgaris under different growth conditions were investigated. While autotrophic growth did provide higher cellular lipid content (38%), the lipid productivity was much lower compared with those from heterotrophic growth with acetate, glucose, or glycerol. Optimal cell growth (2 g l−1) and lipid productivity (54 mg l−1 day−1) were attained using glucose at 1% (w/v) whereas higher concentrations were inhibitory. Growth of C. vulgaris on glycerol had a similar dose effects as those from glucose. Overall, C. vulgaris is mixotrophic.
KeywordsAlgal fuels Autotrophic Biodiesel Chlorella vulgaris Glycerol Heterotrophic Lipid productivity
This research is supported by Southern Illinois University Carbondale (SIUC)’s new faculty start-up funds. Financial support from SIUC Material Technology Center is also greatly acknowledged.
- Benemann JR, Oswald WJ (1996) Systems and economic analysis of microalgae ponds for conversion of CO2 to biomass. Final report, USDOEGoogle Scholar
- Harder R, von Witsch H (1942) Bericht ueber versuche zur fettsynthese mittels autotropher mikroorganisme. Forschungsdienst Sonderheft 16:270–275Google Scholar
- Harris P, James AT (1969) The effect of low temperatures on fatty acid biosynthesis in plants. Biochem 112:325–330Google Scholar
- Sheehan J, Dunahay T, Benemann J, Roessler P (1998) A look back at the U.S. Department of Energy’s aquatic species program: biodiesel from algae. National Renewable Energy Laboratory, NREL/TP-580-24190, USAGoogle Scholar
- Shen Y, Yuan W, Pei Z, Mao E (2008) Culture of microalga Botryococcus in livestock wastewater. Trans ASABE 51:1395–1400Google Scholar
- Thompson JC, He B (2006) Characterization of crude glycerol from biodiesel production from multiple feedstocks. Appl Eng Agric 22:261–265Google Scholar