Acetone-butanol production by Clostridium acetobutylicum in an ammonium-limited chemostat at low pH values |
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Authors: | W. Andersch H. Bahl G. Gottschalk |
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Affiliation: | (1) Institut für Mikrobiologie der Universität Göttingen, Grisebachstr. 8, 3400 Göttingen, West-Germany |
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Abstract: | Clostridium acetobutylicum was grown in continuous culture under ammonium limitation (15.15 mM NH4+). At a pH of 6.0 and at various dilution rates only acetate, butyrate and ethanol were formed as non-gaseous products. A decrease of the pH to values between 5.2 and 4.3 resulted in a shift of the fermentation towards acetone-butanol formation. |
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