Abstract
In the polarographic studies of glutathione involved in marine products, the authors found a new polarographic reduction wave. This polarographic reduction wave has a half wave potential of nearly -1.25 V vs. S. C. E. in McIlvaine's buffer soln. of PH 7.0. In this paper we examined the charcteristics of this reduction wave, and the following results were obtained. 1) The reduction wave was observed only in the muscles of mollusca and crustacea and not in common fish flesh. (Fig. 1 and 2) 2) The substance responsible for reduction wave was found to be readily soluble in water and insoluble in ether, and it was stable to heat (100°C) and had no volatility. (Fig. 3) 3) The potential of this wave was effected by the pH value of the electrolytic soln. and shifted to the positive side according to the decrease of the pH value (Fig. 4)
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