抄録
The following findings were obtained by the histochemical study of thiamine in excised intestines of rats, which were kept alive in 50 ml of Ringer solution containing 500μg of thiamine, 525μg of thiamine allyldisulfide and 525μg of thiamine propyldisulfide at 38℃, for 5,15,or 20 minutes. (1) In 5 minutes, thiamine diffusion was observed only in the mucous epithelium. The extent of diffusion was similar in the duodenum, the jejunum, and the ileum. There was no difference between thiamine allyldisulfide and thiamine. (2) In 15 and 20 minutes : (a) An obvious absorptionpicture was observed. (b) The increased thiamine in the mucous membranes was chiefly of the free form, and the increase of ester form was very slight. (c) The thiamine allyldisulfide group was more easily absorbed by the intestines than thiamine-hydrochloride. (d) With regard to phosphorylation in the mucous membranes of the intestines, there was no marked difference between thiamine allyldisulfide and thiamine.
