Processes and apparatus for extraction of active substances and enriched extracts from natural products
First Claim
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1. A process for preparing a cannabinoid-rich extract from cannabis plant material or a primary extract thereof loaded onto an inert matrix material, comprising contacting the cannabis plant material or primary solvent extract with a heated gas at a temperature which is greater than 100°
- C. and sufficient to volatilise one or more cannabinoids but does not cause pyrolysis of the cannabis plant material or primary solvent extract thereby volatising one or more cannabinoids to form a vapour, and condensing the vapour to form an extract rich in cannabinoids.
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Abstract
Processes for preparing extracts of natural products such as plant material, and for preparing purified extracts from crude extracts of natural products, by extraction with hot gas. Apparatus suitable for use in preparing extracts of natural products are also described.
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Citations
34 Claims
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1. A process for preparing a cannabinoid-rich extract from cannabis plant material or a primary extract thereof loaded onto an inert matrix material, comprising contacting the cannabis plant material or primary solvent extract with a heated gas at a temperature which is greater than 100°
- C. and sufficient to volatilise one or more cannabinoids but does not cause pyrolysis of the cannabis plant material or primary solvent extract thereby volatising one or more cannabinoids to form a vapour, and condensing the vapour to form an extract rich in cannabinoids.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
- 29. A cannabinoid-rich extract which is substantially free of volatile terpenes, has a high content of cannabidiol (CBD) and wherein the majority of the cannabinoids are present in the decarboxylated neutral form, said extract having a profile by gas chromatographic analysis substantially as illustrated in FIG. 6 fraction B, FIG. 7 fraction B, FIG. 8 fraction A or FIG. 8 fraction B.
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31. A cannabinoid-rich extract which is substantially free of volatile terpenes, has a high content of tetrahydrocannabinol (THC) and wherein the majority of the cannabinoids are present in the decarboxylated neutral form, said extract having a profile by gas chromatographic analysis substantially as illustrated in FIG. 10, fraction B.
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32. A cannabinoid-rich extract which is substantially free of volatile terpenes and which comprises about 98% tetrahydrocannabinol (THC), 2.5% cannabidiol (CBD), 0.5% cannabinol (CBN) and only trace amounts of tetrahydrocannabinolic acid (THCA), cannabidiolic acid (CBDA) and ballast.
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33. A cannabinoid-rich extract which is substantially free of volatile terpenes and which comprises about 98% cannabidiol (CBD), 1.5% tetrahydrocannabinol (THC), 0.5% cannabinol (CBN) and only trace amounts of tetrahydrocannabinolic acid (THCA), cannabidiolic acid (CBDA) and ballast.
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34. A cannabinoid-rich extract which is substantially free of volatile terpenes and has a ratio of tetrahydrocannabinol (THC):
- cannabinol (CBN) in the range of from 12.6;
1 to 5.5;
1 and a Δ
8 tetrahydrocannabinol content of less than 0.7%.
- cannabinol (CBN) in the range of from 12.6;
Specification