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A kind of extraction method of poria cocos bark

An extraction method, the technology of Poria cocos bark, which is applied in the field of extraction of traditional Chinese medicine, can solve the problems of weak development, low product yield, low purity, and poor extraction effect, and achieve the effect of simple solvent separation

Active Publication Date: 2018-04-27
湖南省中医药研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, Poria cocos medicinal materials are rarely developed and utilized, and the medicinal dosage is only 2000-3000 tons / year, 2-3 yuan / kg, while the annual demand of traditional Chinese medicine Poria cocos is about 40000 tons, and nearly 10000 tons of Poria cocos are produced. The skin is basically not used as a medicinal material, and is discarded in large quantities. Some companies and enterprises are developing and utilizing Poria cocos skin. and relevant patents all adopt ethanol extraction to the extraction method of Poria cocos medicinal material, but the yield of product, purity are not high, and extraction effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Follow the steps below to extract Poria cocos bark:

[0029] (1) Take 0.3kg of Chinese medicine Poria cocos, pulverize after cleaning, and pass through an 8-mesh sieve to obtain Poria cocos granules;

[0030] (2) Take the granules obtained in step (1), add 9 times the volume of sodium hydroxide aqueous solution with pH 7.8, keep boiling under reflux at 100-110°C for 2.5 hours, filter to obtain medicinal residues and filtrate; add 8 times the volume of medicinal residues pH 7.8 sodium hydroxide aqueous solution, keep boiling and reflux at 100-110°C for 2 hours, filter to obtain medicinal residues and filtrate; add 7 times the volume of pH 7.8 sodium hydroxide aqueous solution to the medicinal residues, keep boiling and reflux at 100-110°C for extraction After 1.5 hours, filter to obtain medicinal residues and filtrate; retain medicinal residues, and combine the filtrates obtained from the three extractions to obtain the alkaline water extract;

[0031] (3) Take the alka...

Embodiment 2

[0035] Follow the steps below to extract Poria cocos bark:

[0036] (1) Take 0.3kg of Chinese medicine Poria cocos, pulverize after cleaning, and pass through an 8-mesh sieve to obtain Poria cocos granules;

[0037] (2) Take the granules obtained in step (1), add 10 times the volume of pH 7.5 sodium hydroxide aqueous solution, keep boiling and reflux at 100-110 ° C for 3 hours, filter to obtain medicinal residues and filtrate; add 9 times the volume of pH 7.5 sodium hydroxide aqueous solution, keep boiling under reflux at 100-110°C for 2.5 hours, filter to obtain medicinal residues and filtrate; add 8 times the volume of pH7.5 sodium hydroxide aqueous solution to the medicinal residues, keep boiling under reflux at 100-110°C for 2 hour, filter to obtain medicinal residues and filtrate; retain medicinal residues, and combine the filtrate to obtain the alkaline water extract;

[0038] (3) Take the alkaline water extract obtained in step (2), adjust the pH value to 6.2, and conc...

Embodiment 3

[0042] Follow the steps below to extract Poria cocos bark:

[0043] (1) Take 0.3kg of Chinese medicine Poria cocos, pulverize after cleaning, and pass through an 8-mesh sieve to obtain Poria cocos granules;

[0044](2) Take the granules obtained in step (1), add 8 times the volume of pH 8.0 sodium hydroxide aqueous solution, reflux extraction at 110°C for 2 hours, filter to obtain medicinal residues and filtrate; add 7 times the volume of pH 8.0 hydroxide solution to the medicinal residues Sodium aqueous solution, reflux extraction at 110°C for 1.5 hours, filter to obtain medicinal residues and filtrate; add 6 times the volume of pH 8.0 sodium hydroxide aqueous solution to medicinal residues, reflux extraction at 110°C for 1 hour, filter to obtain medicinal residues and filtrate; keep dregs, combined filtrate to obtain alkaline water extract;

[0045] (3) Take the alkaline water extract obtained in step (2), adjust the pH value to 6.8, and concentrate under reduced pressure t...

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Abstract

The invention relates to a method for extracting Poria cortex. The method comprises the following steps: take the traditional Chinese medicine Poria cocos skin, grind it after washing, and pass through an 8-mesh sieve to obtain the Poria cocos skin granule; take the obtained Poria cocos skin granule, add an aqueous alkali solution with a pH value of 7.5-8.0, and reflux extraction at 100-110°C , filtered to obtain medicinal residues and alkaline water extracts; the obtained alkaline water extracts can be used as raw materials to further prepare Poria polysaccharides; the obtained medicinal residues can be used as raw materials to further prepare Poria cortex alcohol extracts rich in triterpenoids. The present invention further protects the application of the method in extracting Poria cocos cortex, as well as the polysaccharides prepared by the method, Poria cocos cortex alcohol extract and the application of the substances.

Description

technical field [0001] The invention relates to a method for extracting traditional Chinese medicines, in particular to a method for extracting poria cocos. Background technique [0002] Poria cocos bark is the dry outer skin of Poria cocos (Schw.) Wolf. sclerotium. It has the functions of expelling dampness and diuresis, benefiting the spleen and stomach, calming the mind and calming the nerves. . Features. For the treatment of dysuria, edema and fullness, phlegm retention and cough, vomiting, diarrhea, spermatorrhea, stranguria, palpitations, and forgetfulness. Modern studies have shown that Poria Cortex has diuretic, swelling, calming, whitening and anti-tumor functions. It is reported in the literature that the extract of Poria cocos contains proteins, polypeptides, amino acids, polysaccharides and their glycosides, organic acids, saponins, phytosterols and triterpenoids, cardiac glycosides, may contain tannins, alkaloids, and no phenolic properties have been detecte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K36/076C08B37/00A61P37/04A61P35/00A61P7/10A61P25/20A61P17/00
Inventor 谢昭明黄丹周海燕刘塔斯易成玉蔡川
Owner 湖南省中医药研究院
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