The Effect of Astradix-P on the Growth of Yeast for Putrefing Soy Sauce

간장 부패균의 생육에 미치는 Astradix-P의 영향

This experiment was carried out to conform the antseptic effect of Astradix-P, as a yeaststatic substance on the growth of film forming yeasts, which were isolated from denatured home prepared Korean soy sauce. It resulted that Astradix-P did not give any antiseptic effect, if these yeasts were inoculated into soy sauce medium, but in the ordinary medium the yeast growth were strongly inhibited. Consquently the possiblities of the practical application of the Astradix-P into the home-preserving soy sauce was primarily remained in doubt at this moment. This result might be caused from the reason that the basic amino acids, originally existed in soy sauce, eg, arginine, histidine and lysine etc., had anticipated with the antagonistic action and thereby they made the Astradix-P inactive to these yeast, which already they have been recognized in the previous works.

항효모성 물질인 Astradix-P가 간장 유해효모에 대해서 나타내는 항균효과를 조사한 바 통상적인 효모배지에 유효농도의 Astradit-P를 첨가하였을 때는 효모의 증식이 조해되나 간장을 첨가한 효모배지에서는 항균효과를 나타내지 못하므로 본 Astradix-P가 간장부패에 대한 보존효과는 전연 기대할 수 없다고 본다. 이와같이 간장에 Astradix-P를 첨가하여도 그 효과를 얻지 못하는 이유는 간장중에 함유되어 있는 basic amino acid 인 arginine, histidine, lysine 등이 Astradix-P에 길길적으로 작용하여 비활성화시키는 결과라고 추측된다.