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Method for dewaxing and decoloring cannabidiol extract

A technology of cannabidiol and extract, which is applied in the field of extraction and separation of natural phytochemical components, can solve problems such as increased requirements for operators, difficult extraction and purification, complex back-end treatment, etc., and achieves reasonable process, small amount of solvent usage, and decolorization effect significant effect

Pending Publication Date: 2020-11-17
滇麻生物科技(曲靖)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the industry usually adopts the following methods to produce cannabidiol crystals: column chromatography, supercritical fluid or subcritical fluid extraction technology, (enzyme-assisted) solvent extraction, biosynthesis, chemical synthesis, etc. It is now possible to obtain high-purity CBD in China, but because industrial hemp contains a large number of non-essential ingredients in addition to CBD ingredients, such as plant pigments, plant polysaccharides, and plant waxes, etc., it brings new benefits to the extraction and purification of CBD. Huge difficulties, if these impurities are not removed, it will not only lead to low yield and low content of CBG extraction, but also lead to very complicated back-end processing, which seriously affects product quality, increases equipment investment, and requires operators. increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method for the dewaxing and decolorization of cannabidiol extract extractum described in present embodiment 1 comprises the following steps:

[0019] ① Raw material pretreatment: first crush the industrial hemp flower leaves into flower leaf powder, the particle size of industrial hemp flower leaves is 10 mesh, and then decarboxylate the flower leaf powder, the baking temperature is 100°C, and then bake After the roasted flower leaf powder and the extraction agent are fed according to the volume ratio of 1:8, the extraction agent is n-hexane or ethanol with a mass concentration of 85%, and the extraction is carried out at room temperature, and the temperature at room temperature is 18-28°C. After the extraction is completed, the extraction agent is recovered to obtain the crude extract of the extract;

[0020] ②Dewaxing: Dissolve the crude extract of the extract prepared in step ① with ethanol with a mass concentration of 80% ethanol. The volume ratio of the extract...

Embodiment 2

[0024] The method for the dewaxing and decolorization of cannabidiol extract extractum described in present embodiment 2 comprises the following steps:

[0025] ① Raw material pretreatment: first crush the industrial hemp flower leaves into flower leaf powder, the particle size of industrial hemp flower leaves is 25 mesh, then decarboxylate the flower leaf powder, the baking temperature is 120°C, and then bake After the roasted flower and leaf powder and the extraction agent are fed according to the volume ratio of 1:9, the extraction agent is n-hexane or ethanol with a mass concentration of 93%, and the extraction is carried out at room temperature. The temperature at room temperature is 25°C, and the extraction is completed After recovering the extraction agent, the crude extract of the extract can be obtained;

[0026] ②Dewaxing: Dissolve the crude extract of the extract prepared in step ① with ethanol with a mass concentration of 85% ethanol, the volume ratio of the extrac...

Embodiment 3

[0030] The method for the dewaxing and decolorization of cannabidiol extract extractum described in present embodiment 3 comprises the following steps:

[0031] ① Raw material pretreatment: first crush the industrial hemp flower leaves into flower leaf powder, the particle size of the crushed industrial hemp flower leaves is 40 mesh, and then decarboxylate the flower leaf powder, the baking temperature is 130°C, and then bake After the roasted flower and leaf powder and the extraction agent are fed according to the volume ratio of 1:10, the extraction agent is n-hexane or 100% ethanol in mass concentration, and the extraction is carried out at room temperature. The temperature at room temperature is 28°C, and the extraction is completed After recovering the extraction agent, the crude extract of the extract can be obtained;

[0032] ②Dewaxing: Dissolve the crude extract of the extract obtained in step ① with ethanol with a mass concentration of 90% ethanol. The volume ratio of...

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Abstract

The invention discloses a method for dewaxing and decoloring cannabidiol extract, which is characterized by comprising the following steps: (1) pretreatment of raw materials: crushing industrial hempflower leaves, conducting baking for decarboxylation, and conducting extracting with an extracting agent at normal temperature to obtain crude extract; (2) dewaxing: dissolving the extract crude extract with ethanol to obtain an extract mixed solution, then adding a filter aid into the extract mixed solution, and carrying out freezing, cold filtration, washing, evaporation and concentration to obtain a wax-free extract crude product; and (3) decolorization: dissolving the wax-free extract crude product with ethanol to obtain a dissolved solution, adding a decolorizing agent into the dissolvedsolution, and conducting decolorizing, filtering, washing, filtering again, evaporating and concentrating to obtain golden yellow or yellowish-brown wax-free CBD extract. The method has the advantagesof simplicity in operation, lower requirement on personnel, small solvent consumption, low equipment requirement, remarkable dewaxing and decoloring effects, reasonable process, environmental protection and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of extraction and separation of natural phytochemical components, and in particular relates to a method for dewaxing and decolorizing extracts of cannabidiol extracts. Background technique [0002] Industrial hemp refers to cannabis that has been legally grown and contains less than 0.3% tetrahydrocannabinol (THC). At present, industrial hemp has been cultivated on a large scale in Yunnan Province and Heilongjiang Province, and the scale of cultivation has been expanding year by year. Studies have shown that cannabidiol (CBD), a non-addictive component in industrial hemp, has anti-inflammatory, bactericidal, analgesic, anti-anxiety, anti-psychotic, anti-oxidant, improved learning and memory, neuroprotection and reduced intestinal motility, etc. It can be used to treat multiple arteriosclerosis and Parkinson's disease, prevent myocardial infarction, block breast cancer metastasis, inhibit glioma cell metasta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C37/68C07C37/70C07C37/72C07C37/82C07C39/23
CPCC07C37/004C07C37/685C07C37/70C07C37/72C07C37/82C07C2601/16C07C39/23
Inventor 尹升权唐瑛高建慎杨成周张岚燕
Owner 滇麻生物科技(曲靖)有限公司
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