水産動物のビタミンB12についてI : 魚類のビタミンB12含量(其の一)

概要

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The vitamin B12 content of several fishes was determined by microbiological assay using Euylena glacitis as test organism. The results are summarized in Table 4. The values in the table are obtained by determining the B12 content in the water extracts of the materials, and the values in gothic letter are obtained by determining the B12 content in the water extracts of the materials which are previously digested by pancreatin. From the data of Table 4 following facts are revealed. 1) The B12 content of liver is higher than that of other bodily parts, and the value for ordinary flesh is low. But time B12 content of dark flesh is remarkably higher than that of ordinary flesh. 2) Individual fishes of same species vary considerably in B12 potency of tissues. 3) The B12 content of livers of gray mullet, Mugil cephalus, and yellow tail, Seriola qunqueradiata, is very high, and that of shark, Carcharinus japonicus, and alaska pollack, Theragra chalcogramma, is very low. 4) The B12 content of flesh of pacific sanry Cololabis saira is high. The B12 in flesh of shark, Carcharinus japonicus, could not he detected.
公益社団法人日本水産学会の論文