The invention discloses a preparation method for decarboxylating
cannabidiolic acid in industrial hemp, belongs to the technical field of
plant component extraction and purification, and particularlyrelates to a pretreatment process method for preparing
cannabidiol by decarboxylating
cannabidiolic acid. A
microwave radiation method is used for converting
cannabidiolic acid into
cannabidiol through
cannabidiol acid
decarboxylation. The optimal
decarboxylation conditions are as follows: the
microwave radiation temperature is 60 DEG C, the
microwave power is 600W, the microwave
radiation time is30 minutes. The
decarboxylation rate of the cannabidiol acid is 98 percent or more through liquid
chromatography analysis, the conversion rate of the cannabidiolic acid into the cannabidiol is 99 percent, and the cannabidiol structure is analyzed through
mass spectrometry. The microwave radiation method is adopted for cannabidiolic acid decarboxylation, cannabidiol can be simply and efficiently obtained through convertion, compared with a heating decarboxylation method, the method has the advantages of being short in time, high in efficiency, low in
energy consumption, small in environmentalpollution and the like, and the method is suitable for
raw material pretreatment in the pharmaceutical field and industrial production.