Method for extracting and separating resveratrol from polygonum cuspidatum root

A technology of resveratrol and Polygonum cuspidatum, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry and other directions, can solve the problems of product residues, affecting product use, etc., and achieve the effect of high content and high yield

Inactive Publication Date: 2014-09-17
YONGZHOU YIDONG BIOTECH
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Problems solved by technology

In order to reduce the emodin in the product, many companies use chloroform, resulting in residual chloroform in the product, which affects the use of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] (1) Raw material processing: remove impurities from the raw material of Polygonum cuspidatum root, and crush it into coarse powder of 1-3 mm. Add the prepared enzymolysis solution containing 0.2% of yeast and aminoase respectively, so that the coarse powder contains 55% of the enzymolysis solution. Mix well, press and seal, and use natural enzymatic hydrolysis for 15-30 days for later use. After enzymatic hydrolysis, it will produce a strong mellow aroma;

[0022] (2) Extraction: Put the Polygonum cuspidatum raw material equivalent to 500KG of dry powder into a multifunctional extraction tank, add 6 times the amount of ethyl acetate mixed solvent for the first time, reflux extraction for 3 hours, and collect the extract; the second time Add 5 times the amount of ethyl acetate mixed solvent, reflux for extraction for 2 hours, and collect the extract. Add 5 times the amount of ethyl acetate mixed solvent for the third time, extract for 2 hours, collect the extracts, and ...

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Abstract

The invention discloses a method for extracting and separating resveratrol from polygonum cuspidatum root. The method comprises the following steps: crushing polygonum cuspidatum root as a raw material, carrying out enzymatic hydrolysis, extracting the polygonum cuspidatum root by an ethyl acetate mixed solvent, concentrating, separating the obtained crude product with ethanol, allowing the obtained material to go through alumina, decoloring with active carbon, removing impurities, and crystallizing with ethanol to obtain resveratrol with the content of 98-99%. The method has the advantages of high yield, mature technology and suitableness for industrialized production.

Description

technical field [0001] The invention relates to extracting and isolating resveratrol, an antioxidant biologically active substance, from plants. Specifically, it relates to extracting and separating resveratrol from Chinese medicinal material Polygonum cuspidatum root. Background technique [0002] Polygonum Cuspidatum Sied etzuce is a traditional Chinese medicine used to treat dermatitis, abscess, etc. It is a perennial herb of Polygonaceae, widely distributed in my country. There are wild in East China, Central South, Sichuan, Yunnan, Guizhou and other places. Its application prospect as an extraction raw material is very broad. [0003] Resveratrol (trans-3,4,5 trihydroxystilbene, resveratrol) is an active polyphenolic substance. It has significant anti-oxidation and free radical scavenging effects, which can effectively prevent arteriosclerosis and coronary heart disease; reduce serum and liver lipids and protect the liver; it has an inhibitory effect on cell and tis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/21C07C37/68
CPCC07C37/004C07C39/21
Inventor 窦家琨盘斌
Owner YONGZHOU YIDONG BIOTECH
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