Abstract
The husked rice was stored under low (13℃) and natural temperature conditions from February to December in 1959. Chemical assays of thiamine were carried out on three parts of rice (embryo, bran layer and endosperm), and the distribution of thiamine in embryo was studied by the histochemical method. Decrease of thiamine content in each part during low temperature storage was less than natural temperature storage and was not affected with season. On the other hand, decrease of thiamine content in each part during natural temperature storage was affected with season, namely thiamine contents in embryo and bran layer decreased more than in endosperm from spring to summer. And in all cases, decreased thiamine was almost free thiamine. Regarding to the thiamine distribution in embryo, it was recognized the tendency that the distribution of thiamine became homogeneous during storage. And this tendency was remarkable in natural temperature storage.
