抄録
As it has been known that cyanothiamine has biological thiamine activity. Cyanothiamine may be thought to reverse to thiamine in the liver. When cyanothiamine was incubated with rat liver slice, about 90% of it was reversed to thiamine and liver homogenate gave the same results. On the other hand about 80% of cyanothiamine added was reversed to thiamine when treated with heated rat liver homogenate. Such results showed that the reversion of cyanothiamine did not depend on enzyme in rat liver but on reduction with SH group of cysteine, glutathione etc. in rat liver.
