ソルビン酸によるみその防湧防かびについて : (第1報) みそ酵母に対するソルビン酸の効果

概要

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The influence of sorbic acid on the growth of miso-yeasts was studied. The results obtained were as follows : 1) At the level of 10^5/ml of viable cells, each yeast was inhibited by addition of 1 : 1000〜1500 sorbic acid at pH 50. in 5% NaCl broth madia.2) The effectiveness of sorbic acid was enhanced as the NaCl concentration of a media was increased or as the pH of a media was lowered. Calculated from the concentration of sorbic acid which can inhibit the growth of Saccharomyces rouxii and Torulopsis miso at each pH, ca. 25 mg of undissociated sorbic acid in 100 ml of 5% NaCl broth media was required to suppress the growth.3)However, sorbic acid was not effective at the inoculum size more than 10^6/m, even though ca. 25mg of undissociated sorbic acid was added to 100ml of culture media.4) CO_2-production of S. rouxii suspended in pH 5.0 phosphate buffer was measured with the Warburg manometer. Sorbic acid was not effective for inhibiting CO_2-production, but CO_2-production of viable cells less than 10^5/ml was negligible.
社団法人日本生物工学会の論文
1965-11-25