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Method for extracting cannabidiol from industrial cannabis sativa leaves

A technology for industrial hemp and cannabidiol, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as waste and inefficiency, increase extraction efficiency, improve extract yield, and achieve practical methods. Effect

Pending Publication Date: 2021-10-19
云南巨漳生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problem of large-scale waste of existing industrial hemp leaves, the present invention provides a method for extracting cannabidiol from industrial hemp leaves. The technical scheme adopted is as follows: (1) drying the leaves of industrial hemp After ultrafine pulverization, sieve to obtain industrial hemp powder; (2) adjust the water content of industrial hemp leaf powder to 8%-10%, and then perform microwave-assisted solvent extraction to obtain a crude extract; (3) process the crude extract through three-phase Separation to obtain the solvent phase; (4) the solvent phase is distilled under reduced pressure to obtain oil containing cannabidiol; (5) cannabidiol is obtained through molecular distillation, but the cannabidiol will be converted into carboxylic acid during the extraction process of this patent form, resulting in low extract yield and cannabidiol content

Method used

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  • Method for extracting cannabidiol from industrial cannabis sativa leaves

Examples

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Effect test

Embodiment 1

[0025] In an embodiment of the present invention, a method for extracting cannabidiol from industrial hemp leaves is characterized in that it comprises the following steps;

[0026] Step 1: Clean the industrial hemp leaves, dry them naturally, place them on a tray covered with aluminum foil, put them in an oven at 110°C for preheating for 2 hours, and cool them down for later use;

[0027] Step 2: Put the preheated industrial hemp leaves in a shaker, add an appropriate amount of enzyme solution to hydrolyze for 45 minutes, and obtain a hydrolyzate;

[0028] Step 3: Put the hydrolyzed solution in a blender, add 360ml of extraction solvent to stir and mix, and then perform rotary evaporation to remove the extraction solvent to obtain an oil;

[0029] Add anhydrous methanol to the oil, place it in a freezer at -37°C for 1 hour, and then centrifuge it in an environment at -5°C to obtain a supernatant;

[0030] Heating 10% activated carbon corresponding to the oil in the supernata...

Embodiment 2

[0041] Completely implement the scheme according to Example 1, the difference from Example 1 is: Step 1: Clean the industrial hemp leaves, dry them naturally, put them into a tray covered with aluminum foil, and put them in a 100°C oven for preheating. Treat for 2h, cool for later use.

Embodiment 3

[0043] Completely follow the scheme of Example 1, the difference from Example 1 and Example 2 is: Step 1: Clean the industrial hemp leaves, dry them naturally, put them in a tray covered with aluminum foil, and put them in a 120°C oven Preheating for 2 hours in the middle, cooling for later use.

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Abstract

The invention relates to the technical field of cannabidiol extraction, and in particular, relates to a method for extracting cannabidiol from industrial cannabis sativa leaves, and for improving the extract yield and the cannabidiol content, the method specifically comprises eight steps. The process is exquisite, the method is practical, carboxylic acid derivatives in cannabidiol are completely subjected to a deacidification reaction through preheating, carboxyl is removed, then the extract yield and the cannabidiol content are greatly increased, protease is used for hydrolysis treatment, cannabis sativa leaf plant cell walls are broken, extraction treatment of active substances or pigments is facilitated, and the extraction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of cannabidiol extraction, in particular to a method for extracting cannabidiol from industrial hemp leaves. Background technique [0002] Cannabidiol is a white crystalline powder extracted from industrial hemp, soluble in organic solvents such as ethanol, methanol, ether, benzene, and chloroform. [0003] After retrieval, the Chinese patent "A Method for Extracting Cannabidiol from Industrial Hemp Leaves" (publication number: CN110041171A) provides a method for extracting cannabidiol from industrial hemp leaves, which belongs to chemical drug intermediates Extract technology fields. In order to solve the problem of large-scale waste of existing industrial hemp leaves, the present invention provides a method for extracting cannabidiol from industrial hemp leaves. The technical scheme adopted is as follows: (1) drying the leaves of industrial hemp After ultrafine pulverization, sieve to obtain industrial h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/68C07C37/72C07C37/82C07C37/84C07C39/21
CPCC07C37/004C07C37/68C07C37/72C07C37/82C07C37/84C07C2601/16C07C39/21
Inventor 古景腾谢佳勋所跃刚
Owner 云南巨漳生物科技有限公司
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