Abstract
WhenClostridium acetobutylicum was grown in batch culture under iron limitation (0.2 mg·l−1) at a pH of 4.8, glucose was fermented, to butanol as the major fermentation end product, and small quantities of acetic acid were produced. The final conversion yield of glucose into butanol could be increased from 20% to 30% by iron limitation. The acetonebutanol ratio was changed from 3.7 (control) to 11.8. Hydrogenase specific activity was decreased by 40% and acetoacetate decarboxylase specific activity by 25% under iron limitation. Thus, iron limitation affects carbon and electron flow in addition to hydrogenase.
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Junelles, A.M., Janati-Idrissi, R., Petitdemange, H. et al. Iron effect on acetone-butanol fermentation. Current Microbiology 17, 299–303 (1988). https://doi.org/10.1007/BF01571332
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DOI: https://doi.org/10.1007/BF01571332