ビタミンB_2脂肪酸エステルにかんする研究 : (XIV)ビタミンB_2テトラらく酸エステル<-14>C注射後のネズミ尿中ビタミンB_2の排泄について

概要

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Riboflavin-2^<14>C and its tetrabutyrate were injected to rats and the excretion of riboflavin into urine was studied. In the case of riboflavin-2^<14>C injection (400μg. total counts 2.19×10^5cpm), 301.6μg (total counts 4.89×1.0^4 cpm) of riboflavin was excreted into urine during 24 hours after the injection. In the case of riboflavin tetrabutyrate-2^<14>C injection (400μg, total counts 2.19×10^5cpm), only 182.0μg (total counts 1.74×10^4cpm) of riboflavin was excreted into urine during 72 hours after the injection. These results confirmed the previously reported fact that riboflavin-^<14>C moiety of riboflavin tetrabutyrate-^<14>C is effectively incorporated into FAD and FMN of organs and stayed in animal body for a long time.
日本ビタミン学会の論文
1967-01-25