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Supercritical CO2 liquid method for extracting efficient element of golden buckwheat

An active ingredient, golden buckwheat technology, which is applied in the field of supercritical CO2 fluid extraction and separation of active ingredients of Chinese herbal medicine golden buckwheat, can solve the problems of fluid extraction that no one has reported, and achieve the effect of convenient operation and simple process

Inactive Publication Date: 2007-09-19
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently for golden buckwheat supercritical CO 2 Fluid extraction studies have not been reported

Method used

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  • Supercritical CO2 liquid method for extracting efficient element of golden buckwheat

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Experimental program
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Effect test

Embodiment 1

[0026] Process and steps in the present embodiment are as follows:

[0027] In the first stage, supercritical CO 2 Fluid extraction of non-polar and ineffective components in golden buckwheat: put 200 grams of golden buckwheat material with a particle size of 28 to 60 mesh after crushing and sieving into the extraction kettle, and use supercritical CO 2 The fluid is a solvent; CO 2 It is sent out from the steel cylinder, liquefied after passing through the purifier, cold coil and storage tank, boosted by the high-pressure pump to the set extraction pressure of 15MPa, and heated to the set extraction temperature of 55°C through the heat exchanger, so that the CO 2 The fluid becomes a supercritical fluid state with a flow rate of 30kg / h; then the CO 2 The fluid enters the extraction kettle to contact with the golden buckwheat grains and extract; the extract is in CO 2 The belt of the fluid enters the first separation tank together with the lower part for the first-stage analy...

Embodiment 2

[0034] This embodiment is a method for one-time extraction and removal of non-polar and polar invalid components in golden buckwheat. The technological process and steps of the present embodiment are as follows:

[0035] Put 200 grams of golden buckwheat material with a particle size of 28 to 60 mesh after crushing and sieving into the extraction kettle, and use supercritical fluid CO 2 as solvent, extraction solvent CO 2 Sent from steel cylinders, through purifiers, cold coils and storage tanks, CO 2 It is liquefied, boosted by a high-pressure pump to a set extraction pressure of 15MPa, and heated to a set extraction temperature of 55°C through a heat exchanger, so that CO 2 Composition is supercritical fluid state, supercritical CO 2 The flow rate of the fluid is 30kg / h; then the CO 2 Enter the extraction kettle to contact with the golden buckwheat material and extract; at the same time, the effective solvent absolute ethanol as the entrainer is released from the storage...

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Abstract

The invention relates to a process for separating active ingredient of Chinese herbal medicine wild buckwheat rhizome by supercritical CO2 fluid extraction, which belongs to chemistry and chemical engineering technology art for preparing Chinese herbal medicine. The characteristic of the invention is in that: nonpolar invalid components are extracted from the Chinese herbal medicine wild buckwheat rhizome by the supercritical CO2 fluid; polar invalid components are extracted from the Chinese herbal medicine wild buckwheat rhizome by an active solvent of absolute ethyl alcohol as an entrainer; the supercritical fluid extract has two stages of desorption processes, and the final extract remaining in an extraction kettle is active ingredient of the wild buckwheat rhizome in which the inactive components has already been removed. The extract remains are further extracted to obtain the active ingredient extract. The wild buckwheat rhizome extract of the invention has higher activity for inhibiting alpha-glucosaccharase and is applicable for a hypoglycemic drug. The invention has simple process, convenient operation, without harmful solvent remains in the product.

Description

technical field [0001] The present invention relates to a kind of supercritical CO 2 The invention discloses a process method for fluid extraction and separation of effective components of Chinese herbal medicine Golden Buckwheat, which belongs to the technical field of Chinese herbal medicine preparation chemistry and chemical engineering. Background technique [0002] Golden Buckwheat Fagopyrum dibotrys (D.Don) Hara. is the root of the genus Buckwheat in the family Polygonaceae, also known as Chidili, Jinsuoyinkai, Tianbu, Buckwheat Notoginseng, etc. It is produced in Shaanxi, Henan, Jiangsu, Zhejiang, Jiangxi, Hubei, Guangdong, Guangxi, Guizhou, Yunnan, Sichuan and other places. Excavated in autumn, dried in the sun, used raw or fresh, sour in nature, bitter and cool. Golden buckwheat has the functions of clearing away heat and detoxification, reducing swelling and pain, and inhibiting the growth of cancer cells. It can be used for lung abscess, tuberculosis, emphysema,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/70A61P3/10A61K125/00
Inventor 雍克岚吕敬慈栾梅陈旭
Owner SHANGHAI UNIV
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