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730 results about "Cannabidiol" patented technology

Cannabidiol (CBD) is a phytocannabinoid discovered in 1940. It is one of 113 identified cannabinoids in cannabis plants and accounts for up to 40% of the plant's extract. In 2018, clinical research on cannabidiol included preliminary studies of anxiety, cognition, movement disorders, and pain.

Method for extracting cannabidiol from cannabis

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.
Owner:YUNNAN HANSU BIO TECH CO LTD

Method for extracting cannabidiol from industrial hemp floral leaves

The invention discloses a method for extracting cannabidiol from industrial hemp floral leaves. The method comprises the following steps: grinding and drying floral leaves of industrial hemp, thereby obtaining medicinal powder; extracting the medicinal powder by adopting 30-100v% of ethanol, thereby obtaining extracting solution; concentrating the extracting solution to obtain extract; performing water precipitation on the extract, removing the impurities, thereby obtaining water precipitation solution; centrifuging the water precipitation solution, adding 10-100v% of ethanol into the obtained precipitate, dissolving to obtain an alcoholic solution of the precipitate; performing column chromatography on the alcoholic solution of the precipitate; concentrating the eluent obtained by eluting after column chromatography, adding ethanol to perform supersaturation dissolving, thereby obtaining a crystal; adding the crystal into purified water or ethanol for washing, thereby obtaining a primary product; uniformly mixing the primary product by using the purified water, drying, thereby obtaining the cannabidiol. According to the method disclosed by the invention, the highly safe ethanol serves as a solvent, so that the purity of the cannabidiol in the finished product is improved, a psychotoxic component, namely tetrahydrocannabinol, is removed, the product safety is improved, and the method is suitable for industrial production.
Owner:YUNNAN HANSU BIO TECH CO LTD

Method for extracting and purifying cannabidiol from China-hemp

The invention belongs to the technical field of extraction and purification of plant ingredients and particularly relates to a method for extracting and purifying cannabidiol from China-hemp. In the method, an ingredient of cannabidiol is extracted from floral leaves in a mature period of the China-hemp according to a supercritical CO2 extraction technique, a cannabidiol extract is further purified by macroporous adsorbent resin and a rapid purification system, a cannabidiol content of an obtained product is 98% or higher, and the cannabidiol product does not contain a psychotoxic ingredient tetrahydrocannabinol. According to the method, a chemical organic solvent is not used in an extraction process, so that the method is environment-friendly and is low in toxicity and high in efficiency; the loss of cannabidiol in an adsorption elution process is reduced in a purification process, so that the impurity ingredients such as tetrahydrocannabinol and the like are effectively removed, and the use of an organic regent is decreased, so that the purification cost is lowered, and the environmental pollution is reduced. The product is high in yield and purity, and the requirement for development of a value-added product of the China-hemp, in particular to the market requirement of the active ingredient of the cannabidiol product in the China-hemp, can be met, and especially, the cannabidiol product has the great application advantage in the pharmaceutical field.
Owner:DAQING BRANCH OF HEILONGJIANG ACAD OF SCI

Extraction method and extraction device for cannabidiol-enriched industrial hemp essential oil

The invention discloses an extraction method and an extraction device for cannabidiol-enriched industrial hemp essential oil. By adopting devices such as a screening machine, an oven, a soaking tank, a rotary evaporator, an ultrasonic agitation tank, a butterfly centrifuge, a first climbing-film evaporator, a proportioning tank, a pressurized chromatography silica gel column, an eluate tank, a second climbing-film evaporator, a rotary evaporator, a finished product tank and a solvent recovery tank which are sequentially connected by virtue of pipelines, industrial hemps are stepwise subjected to the operation steps comprising screening, baking, extracting, re-treating, filtering, monitoring, sampling, chromatography and concentrating to obtain the finished product and the effective component cannabidiol-enriched industrial hemp essential oil is finally extracted. By virtue of the extraction device disclosed by the invention, the defects of low efficiency, large consumption and inconvenience in scale production of the conventional process are overcome, the semi-finished product containing tetrahydrocannabinol in the processing does not artificially contact and flow, is legal, safe and efficient, the process method is simple and can be easily promoted and the product has high purity, complete active ingredients and low cost.
Owner:HANKANG YUNNAN BIOTECH
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