酸化性細菌に關する研究 (第4報) : 2-ケトグルコン酸醗酵と窒素源について

概要

論文の詳細を見る
The metabolic change of Pseudomonas depend considerably on its environment and we assume that the effect, which nitrogen source have on the oxidative fermentation, is more noticeable than Acetobacter.As the result of our investigations on the influence of several kinds of nitrogen sources, we reached to the following conclusion.1) Pseudomonas can utilize almost all organic nitrogen sources and such inorganic nitrogen sources as KNO_8,NaNO_8,NH_4NO_8,(NH_4 _2SO_4 etc.2) The optimum concentration of various nitrogen sources are : bouillon 0.004%, peptone 0.01%, KNO_80.014% etc. In other concentrations, the accumulation of 2-ketogluconate is poor.As the result of 2), we have found that there is a relationship between the oxidative fermentation and the nitrogen metabolism, and also the cell respiration. Therefore, the O_2 uptake and RQ of the cells grown in the mediums containing different amounts of nitrogen were measured manometrically, and the results obtained were as follows : (1) The respiartion of the cells goes on parallel with the nitrogen metabolism, and controls mainly their growth, and a conversion to oxidative fermentation takes place afterward.(2) The oxidative fermentation counteracts to the cell respiration and the nitrogen metabolism.
社団法人日本生物工学会の論文
1952-03-15