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Preparation method for extracting resveratrol from reynoutria japonica

A technology of resveratrol and polygonum cuspidatum is applied in the field of preparation of extracting resveratrol from polygonum cuspidatum plants, which can solve the problems of expensive column packing material, unsuitable for industrialized production, etc. short cycle effect

Pending Publication Date: 2018-11-30
CHENGDU WAGOTT BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that the yield of resveratrol is about 1-2% and the purity can reach 70%-99% by using the column separation preparation method, but the column packing material is very expensive, and various and large amounts of organic solvents are used for rinsing , obviously not suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Put the Polygonum cuspidatum raw material in an extractor, add ethyl acetate to soak at a constant temperature of 50°C for 3 hours, pass the mixed solution in the extractor through a 18-mesh sieve to obtain a filtrate; heat the filtrate to 70°C, evaporate and concentrate to The solid content is 20%, to obtain a solid-liquid mixture, then add methanol, through alcohol precipitation, discard the solid, the obtained liquid solid content reaches 45%; dissolve the obtained solid with ethyl acetate to 1% solid alumina adsorption , the color of the lost liquid is controlled to be clear and the solid content of the obtained liquid reaches 98%; then carry out microwave drying, control the temperature of the microwave dryer at 65-75°C, and the vacuum degree> 0.06-0.07MPa, then pulverize with a pulverizer and pass through a 50-mesh sieve. The iron is removed by magnet adsorption, and the powder is evenly mixed after the iron removal, sieved again, and the iron is removed...

Embodiment 2

[0027] Example 2: Put the raw material of Polygonum cuspidatum in an extractor, add ethyl acetate to soak at a constant temperature of 55°C for 3.5 hours, pass the mixed solution in the extractor through a 20-mesh sieve to obtain a filtrate; heat the filtrate to 70°C, evaporate and concentrate When the solid content is 23%, a solid-liquid mixture is obtained, then methanol is added, and the solid is discarded after ethanol precipitation, and the solid content of the obtained liquid reaches 45%; the obtained solid is dissolved in ethyl acetate to 1.5% solid aluminum oxide Adsorption, the color of the lost liquid is controlled to be clear, and the solid content of the obtained liquid reaches 98%; then microwave drying is carried out, the temperature of the microwave dryer is controlled at 65-75°C, and the vacuum degree is > 0.06-0.07MPa, and then crushed with a pulverizer and passed through a 60-mesh sieve , remove iron by magnetic adsorption, mix the powder evenly after iron rem...

Embodiment 3

[0028] Example 3: Put the Polygonum cuspidatum raw material in an extractor, add ethyl acetate to soak at a constant temperature of 60°C for 4 hours, pass the mixed solution in the extractor through a 24-mesh sieve to obtain a filtrate; heat the filtrate to 75°C, evaporate and concentrate to The solid content is 25%, to obtain a solid-liquid mixture, then add methanol, through alcohol precipitation, discard the solid, the obtained liquid solid content reaches 50%; dissolve the obtained solid with ethyl acetate to 2% solid alumina adsorption , the color of the lost liquid is controlled to be clear and the solid content of the obtained liquid reaches 99%; then carry out microwave drying, control the temperature of the microwave dryer at 65-75°C, and the vacuum degree> 0.06-0.07MPa, then pulverize with a pulverizer and pass through a 90-mesh sieve. The iron is removed by magnet adsorption, the powder is evenly mixed after the iron removal, sieved again, and the iron is removed by ...

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Abstract

The invention discloses a method for extracting resveratrol from reynoutria japonica, particularly relates to a preparation method for extracting resveratrol from reynoutria japonica. The method comprises the following steps of extraction,concentration, alcohol-dissolution, alumina adsorption, micro-wave drying and deironing to obtain high-content resveratrol. The preparation method provided by the invention has advantages that the operation is simple, the separation efficiency is high, the cost is low, the product period is short and the produced product is high in purify, and is suitable forfactory large scale production.

Description

technical field [0001] The invention relates to a method for extracting resveratrol, in particular to a preparation method for extracting resveratrol from Polygonum cuspidatum. Background technique [0002] Resveratrol is also known as stilbene triphenols. Scientific research and clinical application have proved that resveratrol has anti-oxidation, anti-free radical, anti-tumor, and cardiovascular protection effects. In addition, resveratrol also has enzyme inducers, delays aging, prevents senile dementia, and inhibits fat Synthetic, anti-inflammatory, anti-bacterial and anti-radiation and many other pharmacological effects. Therefore, it can be added to medicines, food or cosmetics as a new type of beauty care product to delay aging, remove chloasma, acne, and prevent ultraviolet radiation. With the continuous development of biological science and technology, the medicinal value and dosage of resveratrol are also increasing dramatically. At present, resveratrol has been ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C39/21C07C37/68
CPCC07C37/68C07C39/21
Inventor 顾峰
Owner CHENGDU WAGOTT BIO TECH
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