Extraction and purification of cannabinoid compounds
AssigneeBeleave Inc.
InventorsJohn G. Marshall, Lesley G. Campbell
Life of this patent
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Abstract
Disclosed are effective methods for activating, washing, specifically extracting and purifying cannabinoids from Cannabis plant tissues using heat activation, washing impurities away with a polar solvent, optionally modified with an organic acid, base, surfactant or inorganic salt, extracting the activated non-polar cannabinoids with a potable selective solvent such as ethanol. The extracted active ingredients may be purified by chromatography and detected and quantified by mass spectrometry with external or isotopic or otherwise labelled standards.
Claims15
A method of extracting a cannabinoid from a plant tissue comprising the steps:
- a. Heating the plant tissue to convert carboxylated forms of the cannabinoid to a decarboxylated active non-polar form;
- b. washing the Cannabis tissue with a polar solvent to selectively remove components soluble in the polar solvent, leaving the activated cannabinoid;
- and
- c. selectively extracting the activated cannabinoid using a potable selective solvent.
Dependencies are inferred from the claim text.