Affiliation:
1. Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC, 54042 Nancy, Cedex, France, and Université de Nancy I, Laboratoire de Chimie Biologique I, 54037 Nancy, Cedex, France
Abstract
The effect of the component concentrations of a synthetic medium on acetone and butanol fermentation by
Clostridium acetobutylicum
ATCC 824 was investigated. Cell growth was dependent on the presence of Mg, Fe, and K in the medium. Mg and Mn had deleterious effects when in excess. Ammonium acetate in excess caused acid fermentation. The metabolism was composed of two phases: an acid phase and a solvent one. Low concentrations of glucose allowed the first phase only. The theoretical ratio of the conversion of glucose to solvents, which was 28 to 33%, was obtained with the following medium: MgSO
4
, 50 to 200 mg/liter; MnSO
4
, 0 to 20 mg/liter; KCl, 0.015 to 8 g/liter (an equivalent concentration of K
+
was supplied in the form of KH
2
PO
4
and K
2
HPO
4
); FeSO
4
, 1 to 50 mg/liter; ammonium acetate, 1.1 to 2.2 g/liter;
para
-aminobenzoic acid, 1 mg/liter; biotin, 0.01 mg/liter; glucose, 20 to 60 g/liter.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Cited by
211 articles.
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