グルタミン酸生産菌群の分類学的研究(第1報)

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タイトル別名
  • Taxonomical Studies on Glutamic Acid Producing Bacteria Part I
  • グルタミンサン セイサンキングン ノ ブンルイガクテキ ケンキュウ 1 3
  • On the Taxonomical Characters
  • 菌学的性質について

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The taxonomical and comparative studies of the glutamic acid producing bacteria were undertaken, using two hundred and seven strains. The following results were obtained. (1) The organisms change their cell-forms during the growth successively to short rods, rods and ellipsoidal spheres. (2) The organisms are Gram-positive. However, negatively stained cells, which are considered to be non-viable are observed in some samples. (3) The organisms grow well on a tellurite agar medium and form gray to black colored colonies. (4) The organisms are not thermoduric in the skim milk. (5) Hydrogen sulfide is produced by all strains when they are cultured aerobically in the medium containing cystine. (6) The organisms are resistant to relatively high concentration of sodium chloride. (7) Some differences of acid production from carbohydrates are observed in these strains. These acid productivities are found to be stable physiological characters in these micro-organisms. (8) The all strains require biotin for growth but some of these strains are found to require thiamine or para-amino benzoic acid in addition to biotin. (9) Some physiological characters described in this paper are different from those reported by the other anthers. The differences are probably due to cultivation times or to the presence of contaminant.

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