Cannabinoid extraction method
AssigneeWebsar Innovations Inc.
InventorsG. R. Barrie Webster, Leonard P. Sarna
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Abstract
A method of extracting cannabinoids, cannflavins, and/or essential oils from hemp and/or of producing a whole hemp extract lacking Δ9-THC is herein described. The industrial hemp is harvested and the chaff is threshed from the seeds. The chaff is then ground and the ground chaff is extracted with an organic solvent. The extract is then loaded onto a chromatographic column selected to fractionate specific cannabinoids, cannflavins, and essential oils. In one embodiment, Δ9-THC is fractionated out of the extract, producing a whole hemp extract lacking Δ9-THC. In other embodiments, specific cannabinoids and related compounds of interest are fractionated out, thereby producing purified cannabinoids, cannflavins, and related compounds.
Claims14
A method of preparing a Cannabis extract comprising:
- harvesting Cannabis composed of seed and chaff;
- separating the chaff from the seed;
- extracting the chaff with a solvent, thereby producing an extract;
- passing the extract over a chromatographic column arranged to fractionate at least one cannabinoid, cannflavin or essential oil out of the extract;
- and
- collecting the fractions lacking said at least one cannabinoid, cannflavin or essential oil from the column, thereby producing a hemp extract and at least one purified cannabinoid, cannflavin or essential oil.
The method according to claim 28 wherein the organic solvent is selected from the group consisting of:
- a petroleum derived hydrocarbon;
- toluene;
- trimethylpentane, a low molecular weight alcohol;
- ethanol;
- a low molecular weight chlorinated hydrocarbon;
- and dichloromethane.
Dependencies are inferred from the claim text.