種麹菌の貯藏について (第1報) : 湿度条件の檢討

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Tane-koji (Seed koji, i.e., conidia of Aspergillus flavus-oryzae) stored at 8°〜24℃ for 15 months under various relative humidities (R.H.) was tested for the durability of germination power and the results obtained were as follows : 1) The germination power of the conidia of normal strain generally didn't fall of after their storage for 4 months.2) The safe R.H. for the storage of tane-koji was found to be under 70%, above 80% it tends to absorb more moisture and to be contaminated by other molds, so that the surviving conidia decrease at 90〜100% R.H. rapidly in number.3) After storage for 15 months under 25〜70% R.H., about 30% of the codidia were died out. 4)As the desiccating agent for the perfect dryness, CaCl_2 was more suited than H_2SO_4.5) The conidia stored in powder were more durable in the germination power than those adhered on a medium, e.g. rice.
公益社団法人日本生物工学会の論文
1956-01-15