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Extraction method of cannabis sativa flower and leaf oil, and cannabis sativa flower and leaf oil product

A cannabis flower and extraction technology, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of reducing environmental pollution, increasing extraction costs, and consuming organic solvents

Inactive Publication Date: 2017-11-07
YUNNAN HEMPSON BIO-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for extracting hemp flower leaf oil and the hemp flower leaf oil product rich in cannabidiol, which solves the problem of using a solution extraction method to extract hemp flower leaf oil in the prior art, which consumes a large amount of organic solvents, The problem of reducing the quality of cannabidiol while increasing extraction costs and environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for extracting cannabis leaf oil, comprising:

[0031] Pretreatment: drying the flowers and leaves of cannabis at 125 degrees Celsius for 0.1 hour to obtain raw material A with a moisture content of 6%;

[0032] Pulverization: Pulverize raw material A to 30-35 mesh to obtain powder B;

[0033] Drying: Dry powder B at 125 degrees Celsius for 0.2 hours to obtain powder C with a moisture content of less than 4%, and cool powder C to 18 degrees Celsius and keep its moisture content less than 5%;

[0034] Extraction: Supercritical carbon dioxide extraction is carried out on powder C. The extraction temperature is 30 degrees Celsius, the pressure is 10 MPa, the extraction time is 2 hours, and the flow rate of carbon dioxide is 300 kg / hour. After extraction, liquid D and residue E are obtained;

[0035] Separation: Liquid D decomposes cannabis flower leaf oil under the condition of temperature of 30 degrees Celsius and pressure of 2 MPa, and recovers solvent F; after...

Embodiment 2

[0038] A method for extracting cannabis leaf oil, comprising:

[0039] Pretreatment: drying the flowers and leaves of cannabis at 135 degrees Celsius for 0.4 hours to obtain raw material A with a moisture content of 4.8%;

[0040] Pulverization: Pulverize raw material A to 40-45 mesh to obtain powder B;

[0041] Drying: Dry powder B at 135 degrees Celsius for 0.4 hours to obtain powder C with a moisture content of 3.6%, and cool powder C to 25 degrees Celsius and maintain its moisture content at 4%;

[0042] Extraction: Supercritical carbon dioxide extraction is carried out on the powder C, the extraction temperature is 40 degrees Celsius, the pressure is 20 MPa, the extraction time is 5 hours, the flow rate of carbon dioxide is 600 kg / hour, and liquid D and residue E are obtained after extraction;

[0043] Separation: The liquid D decomposes the cannabis flower leaf oil under the condition of 40 degrees Celsius and a pressure of 10 MPa, and recovers the solvent F; after the ...

Embodiment 3

[0046] A method for extracting cannabis leaf oil, comprising:

[0047] Pretreatment: drying the flowers and leaves of cannabis at 132 degrees Celsius for 0.25 hours to obtain raw material A with a moisture content of 5.7%;

[0048] Pulverization: Pulverize raw material A to 35-40 mesh to obtain powder B;

[0049] Drying: Dry powder B at 132 degrees Celsius for 0.3 hours to obtain powder C with a moisture content of less than 4%, and cool powder C to 22 degrees Celsius and keep its moisture content less than 5%;

[0050] Extraction: Supercritical carbon dioxide extraction is carried out on powder C, the extraction temperature is 37 degrees Celsius, the pressure is 15 MPa, the extraction time is 3.5 hours, the flow rate of carbon dioxide is 450 kg / hour, and liquid D and residue E are obtained after extraction;

[0051]Separation: Liquid D decomposes cannabis flower leaf oil under the condition of temperature of 36 degrees Celsius and pressure of 7 MPa, and recovers solvent F; a...

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Abstract

The invention discloses an extraction method of cannabis sativa flower and leaf oil. The method comprises the steps of pretreating: drying flowers and leaves of cannabis sativa for 0.5-4h at the temperature of 105-120 DEG C so as to obtain a raw material A having the water content of less than 7%; crushing: crushing the raw material A into 50-100 meshes to obtain powder B; drying: drying the powder B for 0.5-1h at the temperature of 105-120 DEG C to obtain powder C having the water content of less than 5%; extracting: carrying out supercritical CO2 extraction on the powder C, and obtaining liquid D and residue E after extraction; separating: carrying out throttling expansion analysis on the liquid D to obtain cannabidiol, and recovering to obtain a solvent F. The cannabis sativa flower and leaf oil in the cannabis sativa is extracted by means of the supercritical CO2 extraction; the maximum extraction rate of the cannabidiol can reach 90%, and the purity of the cannabidiol is 20% or above.

Description

technical field [0001] The invention relates to the field of substance extraction, in particular to an extraction method of hemp flower leaf oil and a hemp flower leaf oil product thereof. Background technique [0002] marijuana( Cannabis sativa L.) Also known as hemp or thread hemp, it is a plant of the genus Moraceae and Cannabis, an annual erect herb, 1-3 meters high. Cannabidiol (CBD) contained in cannabis is a phenolic compound that has not been isolated from other animals and plants. Cannabidiol (CBD) is a non-addictive component and has high medicinal value. Studies have shown that if cannabidiol is used reasonably in medicine, it will have antiepileptic, antipsychotic, antidepressant, pain relief, relieve nausea caused by cancer chemotherapy, and treat asthma. In recent years, scientists have also discovered that cannabidiol (CBD) is a powerful antioxidant, which can block the adverse effects of certain polyphenols on human nerves, and has a series of functions su...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10
CPCC11B1/04C11B1/104
Inventor 项伟刘绍兴顾文云李泳霖
Owner YUNNAN HEMPSON BIO-TECH CO LTD
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