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Method for extracting cannabidiol-containing hemp extract

A technology of cannabidiol and hemp is applied in the field of preparation of hemp extract, and achieves the effects of good color and luster, simple preparation process, good physiological value and added value

Inactive Publication Date: 2018-04-13
云南谷益美农业开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent adopts subcritical fluid extraction active substance technology has unique advantages, such as low temperature, non-toxic environmental protection, low energy consumption, etc., but this technology has not been tried for CBD extraction at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Spread the dried hemp seeds in an oven for dry heat treatment, the temperature is set at 80° C., and the time is 2 hours, and then it is ground with a pulverizer. Take 3 kilograms of dry heat-treated hemp seeds, pack them with several filter bags, place them in the extraction tank of the subcritical extraction device, inject the industrial grade ethanol in the solvent tank into the material according to the ratio of material to liquid 1:10 (W / V) In the tank, extract for 40 minutes at a subcritical state with a temperature of 35°C and an extraction pressure of 0.4 MPa, and repeat the extraction for 3 times to obtain the hemp seed extract. The hemp seed extract was dissolved in ethanol at a solid-to-liquid ratio of 1:5 (W / V); then placed in a refrigerator at -10°C for winterization for 60 minutes. Then it was transferred to a centrifuge whose temperature was set to -6°C in advance and whose rotation speed was 4500 rpm, and centrifuged for 30 minutes. Activated carbon was ...

Embodiment 2

[0038] Spread the dried hemp seeds in an oven for dry heat treatment, the temperature is set at 85° C., and the time is 2 hours, and then it is ground with a pulverizer. Get 5 kilograms of dry heat-treated hemp seeds, pack them with several filter bags, place them in the extraction tank of the subcritical extraction device, inject the industrial grade ethanol in the solvent tank into the material according to the ratio of material to liquid 1:15 (W / V) In the tank, extract for 40 minutes at a subcritical state with a temperature of 40°C and an extraction pressure of 0.4 MPa, and repeat the extraction for 3 times to obtain the hemp seed extract. Add a certain amount of ethanol to the ethanol solution of the hemp seed extract obtained so that the solid-liquid ratio reaches 1:7, and then place it in a refrigerator at -10°C for winterization for 45 minutes. Centrifuge at -10°C for 30 minutes in a centrifuge with a rotational speed of 4000 rpm. Activated carbon was added into the o...

Embodiment 3

[0040] Spread the dried hemp seeds in an oven for dry heat treatment, the temperature is set at 90° C., and the time is 2 hours, and then it is ground with a pulverizer. Take 3 kilograms of dry heat-treated hemp seeds, pack them with several filter bags, place them in the extraction tank of the subcritical extraction device, inject the industrial grade ethanol in the solvent tank into the material according to the ratio of material to liquid 1:8 (W / V) In the tank, extract for 40 minutes at a subcritical state with a temperature of 30°C and an extraction pressure of 0.4 MPa, and repeat the extraction for 3 times to obtain the hemp seed extract. Add a certain amount of ethanol to the ethanol solution containing the extract so that the solid-to-liquid ratio reaches 1:7, and then place it in a refrigerator at -10°C for 45 minutes of winterization. Then use -10°C, centrifuge for 20 minutes. The speed is 4500 rpm. The obtained supernatant was decolorized by adding activated carbon...

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Abstract

The invention discloses a method for preparing cannabidiol-containing hemp extract. The method comprises the following steps: taking mature industrial hemp seeds, drying the hemp seeds, removing impurities, and crushing the hemp seeds for later use; carrying out extraction on the crushed hemp seeds with ethanol with the concentration being 95-100% (V / V) according to a solid-liquid ratio of 1:5 to1:20; filtering the obtained extract, and carrying out reduced pressure concentration to obtain industrial hemp seed extract; dissolving the obtained hemp seed extract in ethanol, and carrying out low-temperature winterization; centrifuging the obtained winterized suspension by using a centrifuge or a filtration technique; decolorizing a supernatant obtained after the centrifugation by using activated carbon, and filtering the supernatant; and carrying out rotary evaporation on a filtrate obtained after the filtration to obtain the cannabidiol-containing hemp extract. The product obtained in the invention has the advantages of high CBD content, good color and good physiological characteristics. The method has the advantages of simple process, easiness in industrial application, and promotion of the development and utilization of high added value products of hemp.

Description

technical field [0001] The invention relates to the technical field of medicine preparation, in particular to a preparation method of hemp extract containing cannabidiol. Background technique [0002] Hemp, also known as hemp and industrial hemp, is one of the traditional medicinal materials and health food raw materials in my country. The 2002 document of the Ministry of Health included hemp seed in the "list of items that are both medicine and food", which makes the development and utilization of hemp food legally guaranteed. This also makes condition and support provided to the development of hemp plant mosaic. In recent years, with the deepening of people's understanding of hemp and the in-depth research on the strong physiological functions of its processed products, countries have generally reopened the restrictions on the development of hemp and its products. What follows is that the planting area of ​​hemp is continuously expanding and the output of hemp is increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/60A23L33/105A61K131/00
CPCA23L33/105A61K36/60A61K2236/333A61K2236/37A61K2236/51A61K2236/53
Inventor 李如敏
Owner 云南谷益美农业开发有限公司
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