Tetracoccus soyaeとBacillus sp.の耐塩性の測定法と耐塩性に及ぼす因子について : 細菌の耐塩性に関する研究(第2報)

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Salt is one of the physicochemical factors which control the growth of microorganisms. Estimation of halotolerance seems to be important for the analysis of effects of salts. The present paper proposes a method for quantitative estimation of halotolerance.It was found that general bacteria could be divided into 3 groups according to their growth in the presence of 10% NaCl : The first comprises bacteria whose growth was not effected; the second, bacteria whose growth rate was reduced; and the third, bacteria most of which were killed but some of which acquired halotolerance and grew. It was shown that growth rate could be a standard for halotolerance of Tetracoccus soyae, which was typical of the second group. Growth lag time was also a standard for Bacillus sp. M-9 which was typical of the third group. Halotolerance of Tc. soyae was found to be affected by initial pH and that of M-9 was by osmotic pressure and initial pH.
社団法人日本生物工学会の論文
1976-11-25