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Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions

Abstract

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.

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Acknowledgments

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.

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Correspondence to Yanna Liang.

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Liang, Y., Sarkany, N. & Cui, Y. Biomass and lipid productivities of Chlorella vulgaris under autotrophic, heterotrophic and mixotrophic growth conditions. Biotechnol Lett 31, 1043–1049 (2009). https://doi.org/10.1007/s10529-009-9975-7

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Keywords

  • Algal fuels
  • Autotrophic
  • Biodiesel
  • Chlorella vulgaris
  • Glycerol
  • Heterotrophic
  • Lipid productivity