Method for extracting cannabidiol from cannabis

A technology of cannabidiol and marijuana, applied in the field of cannabidiol extraction, can solve the problems of psychotoxic component tetrahydrocannabinol residue and low purity of cannabidiol
CN106831353AActive Publication Date: 2017-06-13YUNNAN HANSU BIO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YUNNAN HANSU BIO TECH CO LTD
Publication Date
2017-06-13

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Abstract

The invention discloses a method for extracting cannabidiol from cannabis. The method comprises the following steps: smashing and drying extraction fractions of cannabis to obtain medicine material powder; extracting the medicine material powder with 30% to 100% (V / V) of ethanol to obtain an extracting solution; concentrating the extracting solution to obtain an extract; carrying out water precipitation on the extract, and removing impurities to obtain a water precipitation solution; centrifuging the water precipitation solution and adding 10% to 100% (V / V) of ethanol into an obtained precipitate, and dissolving the precipitate to obtain an alcoholic solution of the precipitate; carrying out column chromatography on the alcoholic solution of the precipitate; eluting an obtained eluant after the concentration column chromatography, and adding ethanol for supersaturated dissolution to obtain a crystal substance; adding the crystal substance into purified water or ethanol for washing to obtain a primary product; blending the primary product with purified water, and drying to obtain the cannabidiol. Only highly safe ethanol is adopted as a solvent, the purity of the cannabidiol in a finished product is improved, and the psychotoxic component of tetrahydrocannabinol is also removed, so that the product safety is improved, and the method is applicable for industrial production.
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Description

technical field

[0001] The invention relates to a method for extracting cannabidiol from cannabis, in particular to a method for extracting cannabidiol from industrial hemp flowers and leaves. Background technique

[0002] Cannabis (scientific name: Cannabis sativa L.) is a plant of the Cannabis family and the genus Cannabis, also known as hemp, hemp, hemp, mountain silk seedlings, and jute. It has important agricultural and medicinal values. Marijuana contains a toxic component THC (tetrahydrocannabinol), which can make people hallucinogenic and addictive, and can be used as a drug. It was banned for a long time.

[0003] Due to the high economic and medicinal value of hemp, the raw material hemp exclusively for industrial use is referred to as "industrial hemp". The value of the toxic component tetrahydrocannabinol or directly as a drug can be legally carried out in large-scale cultivation and industrial development and utilization.

[0004] At present, more than 500 sub...

Claims

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