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Patent US10729734
Issued 2020-08-04
Freeze Dry Process
A process includes rupturing plant cells of cannabis by freeze-drying the cannabis at a temperature below 0° C. in order to expose or release one or more chemicals including at least cannabinoids in the plant cells of the cannabis, after rupturing the cannabis plant cells, extracting the one or more chemicals including at least cannabinoids from the cannabis by pressurizing the cannabis in a pressure vessel with along with a solvent, the solvent dissolving the one or more chemicals including at least cannabinoids, followed by depressurizing the cannabis in the pressure vessel, where the depressurizing precipitates the one or more chemicals including at least cannabinoids out of the solvent, and then isolating the one or more chemicals including at least cannabinoids that precipitated from the solvent.
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USPTO Full Text Publication >
- 1. A process consisting essentially of:
drying raw cannabis; rupturing the cannabis cells in the raw cannabis by freeze-drying the dried raw cannabis at a temperature below 0° C. in order to expose or release one or more cannabinoids in the cells of the cannabis; after rupturing the cannabis cells, extracting one or more cannabinoids in the cannabis by pressurizing the cannabis in a pressure vessel with along with a solvent, the solvent dissolving the one or more cannabinoids in the cannabis followed by depressurizing the cannabis in the pressure vessel, wherein the depressurizing precipitates the one or more cannabinoids out of the solvent; and isolating the one or more cannabinoids that precipitated from the solvent, wherein the cannabinoids are selected from the group consisting of tetrahydrocannabinol, cannabidiol, cannabinol, cannabavarin, cannabigerol, cannabichromene, delta-8-THC, cannabicyclol, cannabitriol, and cannabielsoin.
