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US 11,110,372 B2Granted
Cold extraction method for cannabinoids and terpenes from cannabis by organic solvents
AssigneeNeptune Wellness Solutions Inc.
InventorsFereshteh Farokhi, Pierre St-Jean, Etienne Villeneuve
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Abstract
The invention relates to methods of producing extracts from cannabis plant material, where the extracts comprise cannabinoids and terpenes. The methods comprise extracting fresh or dried plant material with a cold organic solvent. The methods allow for the extraction of cannabinoids and terpenes, while leaving behind impurities such as waxes and chlorophyll that are commonly found in extractions with room temperature (RT) or warm solvent extraction methods. The methods can produce extracts having more than 90% cannabinoids.
Claims20
A method of preparing a cannabis extract comprising:
- a. providing cannabis plant material comprising stems, leaves, seeds, flowers or a combination thereof in an extraction chamber;
- b. contacting an organic solvent at a temperature of between about 0° C. and −80° C. with the cannabis plant material;
- c. extracting at least one bioactive molecule from the cannabis plant material into the organic solvent for a first period of time, thereby producing an organic solvent comprising a cannabis extract, wherein the extraction step takes place at between about 0° C. and −80° C.;
- d. filtering or centrifuging the organic solvent and the cannabis plant material to remove solid materials;
- and
- e. recovering the cannabis extract from the organic solvent;
- thereby producing the cannabis extract.
4 more elements
Dependencies are inferred from the claim text.