Abstract
The volumetric productivity of many fermentations is productlimited.In situ removal of these products with liquid organic extractants is limited by either a low product distribution coefficient or toxicity of the extractant. This paper presents results from studies using mixed extractants, namely mixtures of toxic extractants that have high distribution coefficients for the product and nontoxic extractants that have low distribution coefficients. The production of butanol byClostridium acetobutylicum was chosen as a model system for these studies. The mechanisms of toxicity of mixed extractants and the observed responses to their presence are discussed.
Published Version
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