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Method for extracting industrial hemp oil rich in cannabidiol

A technology of cannabidiol and industrial hemp, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of cannabidiol solvent residue, large consumption of organic solvent, high extraction cost, etc., and achieves short extraction cycle and low solvent consumption , No environmental pollution effect

Inactive Publication Date: 2016-04-20
GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction of industrial hemp oil is mostly carried out by solvent extraction. The existing extraction method needs to consume a large amount of valuable organic solvents, high energy consumption, high extraction cost, and the extracted cannabidiol has solvent residues and odor. low purity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven and dried at 50°C for 12 hours; then the pre-dried hemp Put the industrial hemp into the pulverizer and crush it into 20-mesh industrial hemp powder, put the industrial hemp powder in the oven, and dry it at 50°C for 12 hours; the dried industrial hemp powder remains in the drying furnace to naturally Cool to normal temperature; Weigh 132.0g of industrial hemp powder after cooling and put it into the material bucket of the extraction kettle, and CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 60°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 200kg / h, and the extraction time is 1.5h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp powder is dissolved in supercritical CO 2 In the fluid, the CO of the indu...

Embodiment 2

[0019] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven, and the industrial hemp is dried at 55°C for 11 hours, and then the pre-dried The industrial hemp powder is put into the pulverizer and crushed into 30-mesh industrial hemp powder, then the industrial hemp powder is put into the oven, and the industrial hemp powder is dried at 55°C for 11 hours; the dried industrial hemp powder remains in the oven. Naturally cool to normal temperature in a dry furnace; weigh 131.0 g of cooled industrial hemp powder and put it into the material barrel of the extraction kettle, and put CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 55°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 180kg / h, and the extraction time is 1.5h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp p...

Embodiment 3

[0021] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven, and the industrial hemp is dried at 60°C for 10 hours, and then the pre-dried Put the industrial hemp into the pulverizer and crush it into 40-mesh industrial hemp powder; then put the industrial hemp powder in the oven and dry it at 60°C for 10 hours, and the dried industrial hemp powder remains in the drying furnace Naturally cool to normal temperature; Weigh 130.0g of cooled industrial hemp powder and put it into the material barrel of the extraction kettle, and put CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 50°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 150kg / h, and the extraction time is 2h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp powder is dissolved in supercritical CO 2 In the fl...

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Abstract

The invention discloses a method for extracting industrial hemp oil rich in cannabidiol. The method includes the steps that supercritical carbon dioxide fluid is adopted for extracting industrial hemp oil from industrial hemp, during extraction, cooled industrial hemp powder is placed in a material barrel of an extraction kettle, CO2 gas is injected into the extraction kettle, the temperature and pressure in the extraction kettle are kept, the CO2 gas makes contact with raw materials in a supercritical state, the industrial hemp oil and other ingredients in the industrial hemp powder are dissolved in the supercritical fluid, the fluid containing cannabidiol and other ingredients throttles and expands in the extraction kettle and enters a separation kettle to be analyzed, and the industrial hemp oil is obtained and collected. The CO2 fluid in the supercritical state is used as an extraction solvent, reuse is achieved in the same system, the process is simple, energy consumption is low, the extraction period is short, is only 1-2 h and is 1 / 4 of the production period in the prior art, and the extracted industrial hemp oil has the advantages of being good in quality, high in purity, free of abnormal smells, solvent residues and environmental pollution and the like.

Description

technical field [0001] The invention relates to a method for extracting industrial hemp oil rich in cannabidiol, belonging to the technical field of substance extraction. Background technique [0002] Cannabidiol is extracted from industrial hemp. It is the main active ingredient in cannabinoids. It has neuroprotective effects, is non-addictive, and has anti-spasmodic, anti-rheumatic arthritis and anti-anxiety effects. It is used in medicine It has attracted extensive attention and has become a research hotspot in recent years. At present, the extraction of industrial hemp oil is mostly carried out by solvent extraction. The existing extraction method needs to consume a large amount of valuable organic solvents, high energy consumption, high extraction cost, and the extracted cannabidiol has solvent residues and odor. Low purity. Contents of the invention [0003] The purpose of the present invention is to provide a method for extracting industrial hemp oil rich in canna...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10
CPCC11B1/04C11B1/104
Inventor 滕春娟朱成业宋大为
Owner GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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