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Method for extracting rhubarb total dihydrodiketoanthracene from rhubarb

A technology for total anthraquinone of rhubarb and rhubarb is applied in the field of extracting total anthraquinone of rhubarb, which can solve the problems of staying, no new drug development and the like.

Inactive Publication Date: 2009-04-08
江西百神昌诺药业有限公司
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  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of effective parts of rhubarb is still in the stage of hospital preparation, and there is no report on the development of new drugs according to the requirements of new drug review.

Method used

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  • Method for extracting rhubarb total dihydrodiketoanthracene from rhubarb

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Embodiment Construction

[0023] In the present invention, the total anthraquinone of rhubarb is extracted and separated by a solvent method by using rhubarb as a raw material, and the preparation method is as follows:

[0024] (1) crushing:

[0025] Take rhubarb pieces or rhubarb slices, and add them evenly into the pulverizer to make 1000g of rhubarb coarse powder.

[0026] (2) Percolation:

[0027] a) Impregnation: take rhubarb coarse powder and place it in a percolation tank, add 0.8 times the amount of 95% ethanol (volume ratio), moisten evenly, and impregnate in an airtight manner for 48 hours.

[0028] b) Primary dehydration: add 95% ethanol at a constant speed for percolation, the percolation speed is 1-1.5ml per minute, slowly percolate, collect 5000ml of primary dehydration liquid, and set aside.

[0029] c) Continued filtration: collect 10000ml of the continued filtrate, recover ethanol under reduced pressure to a relative density of 0.90-0.91 (60-65°C), let cool, let stand, filter, collec...

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Abstract

The invention relates to a preparation method for extracting rhubarb total anthraquinone from traditional Chinese medicine material rhubarb. The method adopts a solvent method to extract main active components of the rhubarb total anthraquinone of rhubarb from the traditional Chinese medicine material rhubarb. The main active components of the rhubarb total anthraquinone comprise emodin, chrysophanol, rhein, emodin methyl ether and aloe emodin. The method comprises process methods of crushing of the rhubarb, percolation, precipitating by alkali, refining of precipitate and concentrate, drying and collection of the rhubarb total anthraquinone, and the like.

Description

technical field [0001] The invention relates to a method for extracting rhubarb total anthraquinones from rhubarb, a traditional Chinese medicinal material. It belongs to the field of traditional Chinese medicine pharmacy. Background technique [0002] Rhubarb is a commonly used traditional Chinese medicine. It has been used for more than 2,000 years. It has a prominent position in traditional medicine. Together with ginseng, rehmannia, and aconite, it is called "the four dimensions of medicine". Rhubarb has the effects of purging heat and clearing the intestines, cooling blood and detoxifying, removing blood stasis and stimulating the menstrual flow, promoting gallbladder and reducing jaundice. In traditional Chinese medicine, rhubarb has been used as the main drug of "breaking blood stasis, promoting blood circulation, and attacking diarrhea heat" since ancient times. Strength, the power to seize the pass and kill the general." More than 2,000 years of clinical practice ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/708
Inventor 付志高
Owner 江西百神昌诺药业有限公司
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