Abstract
The conversion of O-benzoylthiamine (OBT) to thiamine in various organs was studied by means of the procedure for the determination of OBT which is deviced by the author. The liver homogenates of albino rat and rabbit have the enzyme, capable of converting OBT to thiamine. Its optimum pH is 7.0-7.5. The enzymatic potency is strogest in liver, followed by kidney, while that in brain is negligible. The enzymatic power of blood varies with the animal species. For example, in rat blood it is negligible, while in human blood it is relatively strong.
