Turbidostat cultures of Clostridium acetobutylicum were analysed with respect to their fermentation products after steady states were obtained at various cell densities. It was found that at low densities the fermentation of glucose was essentially acidogenic in nature, whereas acetone and butanol were the major end-products when the cultures were maintained at a high cell density.
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Gottschal, J.C., Morris, J.G. Continuous production of acetone and butanol by Clostridium acetobutylicum growing in turbidostat culture. Biotechnol Lett 4, 477–482 (1982). https://doi.org/10.1007/BF00131568
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DOI: https://doi.org/10.1007/BF00131568