抄録
Attempt was made to offer a standard physico-chemical method of detecting and identifying hemp plant or its extract by comparing the applicabilities of such methods as color reactions, thin-layer chromatography, gas-chromatography etc. Thin-layer of silicagel impregnated with dimethylformamide could efficiently separate three major components, cannabinol (CBN), cannabidiol (CBD), tetrahydrocannabinol (THC), and the gas liquid chromatography with the stationary liquid of SE-30 was satisfactorily employed for detection and determination of each component. Further, using these methods some fifteen samples prepared from hemps gathered in various areas of north eastern Japan were examined in comparison with those from the U.S.A. and Nepal. It was found that the relative amount of the three major components in the extracts of the hemp from Japan was almost consistant, namely THC was predominant. They were, however, different from those of the U.S.A. and nepal as well as from those of various origins already described in some foreign reports.
