抄録
It has been observed that, in the culture medium, the toxicity of p-benzoquinone on bakers' yeast decreases with time, and the decreasing process was examine from the view point of chemical reaction of quinone with thecomponent of the medium.
As a result, it was shown that quinone concentration decreases by its 1, 4-addition reaction with amino radicals of the component of the medium, and it was concluded that the inhibiting effect of quinone on the yeast growth is determined by the velocity of death of the yeast by the toxicity of quinone and that of inactivation of the toxicity by the addition reaction.
