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.
Appl Environ Microbiol. 1982 Dec;44(6):1318-24. doi: 10.1128/aem.44.6.1318-1324.1982.
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.
研究了合成培养基中各成分浓度对丙酮丁醇梭菌 ATCC824 发酵丙酮和丁醇的影响。细胞生长依赖于培养基中镁、铁和钾的存在。过量的镁和锰会产生有害影响。过量的乙酸铵会导致酸发酵。该代谢过程由两个阶段组成:酸相和溶剂相。低浓度的葡萄糖仅允许进行第一阶段。用以下培养基可获得葡萄糖到溶剂的理论转化率为 28%至 33%:硫酸镁,50 至 200 毫克/升;硫酸锰,0 至 20 毫克/升;氯化钾,0.015 至 8 克/升(以 KH2PO4 和 K2HPO4 的形式提供相当于 K 的浓度);硫酸亚铁,1 至 50 毫克/升;乙酸铵,1.1 至 2.2 克/升;对氨基苯甲酸,1 毫克/升;生物素,0.01 毫克/升;葡萄糖,20 至 60 克/升。