METHODS FOR EXTRACTION, PROCESSING, AND PURIFICATION OF MINOR CANNABINOID COMPOUNDS FROM COMPLEX MIXTURES
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United States of America Patent
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Issued Date -
Jun 13, 2024
app pub date -
Dec 6, 2021
filing date -
Dec 4, 2020
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Abstract
Disclosed are methods for separating, recovering, and purifying CBGA, CBDVA, THCVA, CBCVA, and CBCA from dewatered and desolventized crude complex extracts or mixtures of metabolites, cannabinoids, and Cannabis phytochemicals. The methods comprise solubilizing the extracts or mixtures of cannabinoids in a selected solvent, adding a selected amine to precipitate a CBGA-amine or CBDVA-amine or THCVA-amine or CBCVA-amine or CBCA-amine salt therefrom, dissolving the recovered amine salt in a selected solvent, and adding a selected antisolvent to recrystallize a purified amine salt therefrom. The recrystallized amine salt may be decarboxylated to form a mixture of CBG or CBDV or THCV or CBCV or CBC and amine. The cannabinoid and amine mixture may be acidified to separate the amine from CBG or CBDV or THCV or CBCV or CBC. The recovered CBG or CBDV or THCV or CBCV or CBC may then be concentrated.
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