魚類筋肉内燐化合物の生理化学的研究-8-

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The present studies were carried out on the effect of urethan on phosphorus compounds in muscles of mackerel. The results are summarised as follows: (1) The muscles of mackerels treated with 0.5% urethan for 2.0min., 1.0% urethan for 1.5min. and 2.0% urethan for 1.0min. contained 20.8-22.1mg% of 7'P in ordinary muscle and 7.0-9.7mg% of 7'P in dark muscle, respectively, more than in those of the control. But there was perceived little difference in CP content. (2) The vigorous post-mortem degradation of 7'P and CP in the fish narcotized with urethan began a few hours later than that in the fish which were numbed with cold temperatures such as 0°C. and -20°C. and lasted longer. But there was little difference in them between the mackerel numbed with cold and the control (Table 2, Figs. 1-4). (3) The author proposed that the narcotizing or cold-numbing method be applied to the method of catching fish from a view point of keeping the freshness of fish.
社団法人日本水産学会の論文