麹菌の胞子形成に關する研究(第2報) : CZAPEK改変培地について(1)

概要

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The conditions for the sporulation of Asp. oryzae have been investigated with the modified CZAPEK-agar. The results are summarized as follows.1) Optimum pH for sporulation is 3.0〜6.02) Trace elements in soil, added in the form of soil extarcts, have no influence upon sporulation in cultures with media prepared from compounds of "extra-pure" grade.3) Variation in concentration of KH_2PO_4 within the range of 0.05〜1.0% produces no effect.4) Superior carbon-sources are sucrose, fructose, maltose and soluble starch ; glucose is less superior and lactose is inferior for sporulation. Optimum concentrations of sucrose and glucose for sporulation are 2〜6 and 6%, respectively. The effect of glucose concentration examined within the range of 3〜25% is almost imperceptible.5) Basal cencentration of the ingredients in CZAPEK-agar is optimal for sporulation. The higher the concentration is made, the later the sporulation takes place.
公益社団法人日本生物工学会の論文
1954-11-15