Abstract
In the previous reports1-3), the authors found that a polarographically reducible organic base from water soluble extractives of cuttle fish meat has an absorption muximum at 272mμ in water or McIlvaine's buffer solution (pH 7.0), and its reaction with ninhydrin is negative. In this paper, we have studied on the separation (Figs. 1-2) or the crystallization of this base and compared it with some authentic organic bases by the technique of polarography or spectrophotometry. According to the results, it was found that this organic base which is soluble in alcohol and insoluble in ether is not identical with anyone of several organic bases such as adenine, hypoxanthine, xanthine, thymine, thiamine, glycol-betaine, choline, creatinine (Table 1 and Figs. 3-4) and 5-hydroxy-tryptamine (Figs. 5-6).
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