水産動物のL-アスコルビン酸に関する生化学的研究-IV : コイにおけるL-アスコルビン酸-1-14Cの代謝

概要

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In the present investigation an attempt has been made to provide some feature of L-ascorbic acid (AsA) utilization in the intact carps. The results obtained are as follows. 1) The body pool size and the turnover rate of AsA were obtained by introducing labeled 14C-AsA directly into the body. The subsequent fall in the specific activity of visceral AsA with time provided the data from which the turnover measurements were calculated. The results indicate that the body pool of AsA in carps averaged 16.1mg per 100g of body weight, the turnover time averaged 5.5 days, and the turnover rate averaged 2.9mg per 100g of body weight per day. 2) AsA was administered to carps, and the metabolic products excreted was measured on successive day. The results indicate that the excretion of oxalic acid increased, the excretion of fumaric acid, succinic acid and citric acid did not change, and no AsA appeared.
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