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Relationship between substrate inhibition and maintenance energy ofChlamydomonas reinhardtii in heterotrophic culture

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Abstract

The relationship between substrate inhibition and maintenance energy ofChlamydomonas reinhardtii grown heterotrophically on acetate was investigated. At low acetate concentrations (<0.4 g l−1), where no inhibition of cell growth was observed, the cell growth yield and specific growth rate could be represented by the Pirt model, 1/Y=1/Y g +m/μ with a constant value of maintenance energy coefficient m. However, at high acetate concentrations (>0.4 g l−1), inhibition of cell growth occurred, in which m became variable and dependent on the acetate concentration. A simple mathematical model was proposed to predict the actual maintenance energy coefficient m in the inhibited cultures and experimentally validated.

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Chen, F., Johns, M.R. Relationship between substrate inhibition and maintenance energy ofChlamydomonas reinhardtii in heterotrophic culture. J Appl Phycol 8, 15–19 (1996). https://doi.org/10.1007/BF02186216

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  • DOI: https://doi.org/10.1007/BF02186216

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