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Method for preparing polyphenol

A technology of ratio and plum, which is applied in the field of preparing polyphenols from plum dregs, can solve problems such as the lack of data on plum polyphenols, the lack of suitable industrial production materials, and restrictions on wide application, and achieve simple and economical equipment, high reproducibility, The effect of high sample recovery

Inactive Publication Date: 2017-06-27
宋容
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with water extraction, the organic solvent extraction method consumes less energy, has a higher extraction rate, and can effectively reduce the denaturation of polyphenols during the extraction process, but the residual organic solvent and the pressure on the environment have always restricted this method. widespread application of the law
[0005] At present, there are not many published data on the separation and purification of plum polyphenols, and there is no data suitable for industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for preparing polyphenols from plum dregs includes the following steps:

[0016] (1) Mix 150 g of dry plum dregs powder with 750 mL of ethanol in proportion, stir, extract for 4 hours, stand still, filter, and extract twice, combine the extracts, and evaporate the extracts to dryness at 40°C; the ethanol is the volume ratio 99.0:1.0 mixture of methanol and concentrated hydrochloric acid;

[0017] (2) According to the ratio of 1g:5mL, mix the product obtained in step (1) with petroleum ether, extract 3 times, combine the supernatants and recover the petroleum ether; add the extract in the ratio of 1g:5mL Ethyl acetate was extracted three times, and the combined supernatant was evaporated at 40°C to evaporate ethyl acetate. The solid was frozen and freeze-dried to obtain a crude plum residue polyphenol extract. The extraction rate is 91.2%.

[0018] The crude plum dregs polyphenol extract can be purified by a variety of well-known methods, and the following methods do...

Embodiment 2

[0024] (1) Mix 150g of dry plum dregs powder with 700mL of ethanol in proportion, stir, extract for 5h, stand still, filter, extract once, and evaporate the extract at 35℃ to dry;

[0025] (2) According to the ratio of 1g:4mL, mix the product obtained in step (1) with petroleum ether, extract 4 times, combine the supernatant and recover the petroleum ether; add the extract according to the ratio of 1g:4mL Ethyl acetate was extracted 4 times, and the combined supernatant was evaporated at 35°C to evaporate ethyl acetate. The solid was frozen and freeze-dried to obtain a crude plum residue polyphenol extract. The extraction rate is 89.9%.

[0026] The crude plum dregs polyphenol extract can be purified by a variety of well-known methods, and the following methods do not limit the present invention:

[0027] (1) According to the proportion, dissolve 100mg of the crude plum dregs polyphenol extract in 45mL ethanol and filter with a 45μm organic filter membrane;

[0028] (2) Use a constan...

Embodiment 3

[0033] A method for preparing polyphenols from plum dregs includes the following steps:

[0034] (1) Mix 150g of dry plum dregs powder with 800mL ethanol in proportion, stir, extract for 3h, stand still, filter, extract 3 times, combine the extracts, and evaporate the extracts to dryness at 45°C;

[0035] (2) According to the ratio of 1g:6mL, mix the product obtained in step (1) with petroleum ether, extract twice, combine the supernatant and recover the petroleum ether; add the extract in the ratio of 1g:6mL Ethyl acetate was extracted twice, and the combined supernatant was evaporated at 45°C to evaporate ethyl acetate. The solid was frozen and freeze-dried to obtain a crude plum residue polyphenol extract. The extraction rate is 90.6%.

[0036] The crude plum dregs polyphenol extract can be purified by a variety of well-known methods, and the following methods do not limit the present invention:

[0037] (1) According to the ratio, dissolve 100mg of the crude plum dregs polyphenol...

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PUM

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Abstract

The invention discloses a method for preparing polyphenol from plum residues. The method comprises the following steps: (1) mixing plum residue dry powder with ethanol, carrying out stirring, extraction, standing, filtration and extraction, combining extracted solutions, and carrying out evaporation drying; and (2) mixing a product obtained in the step (1) with petroleum ether, extracting supernate, recycling petroleum ether, adding an extracted product into ethyl acetate, carrying out extraction, combining supernate, evaporating to remove ethyl acetate, and freezing solids, and carrying out freeze drying, so as to obtain a plum residue polyphenol crude extract. The plum residue polyphenol crude extract is extracted from the plum residues, and the preparation method is simple, high in extraction efficiency, low in production cost, high in safety and applicable to industrial production.

Description

Technical field [0001] The invention belongs to the technical field of preparation of polyphenols, and specifically relates to a method for preparing polyphenols from plum residue. Background technique [0002] Polyphenols refer to plant phenols with multiple phenolic hydroxyl groups in the molecule. There are high content of natural polyphenols in plum dregs fruits. Plant polyphenols have strong antioxidant capacity, which is 20 times the antioxidant capacity of vitamin C under the same dose, so it can effectively remove the body Oxygen free radicals reduce the damage of oxygen free radicals to normal cells and play a protective role. At the same time, polyphenol compounds can also prevent the formation and accumulation of potential carcinogens in the human body, improve metabolism, and have a significant anti-cancer effect. In addition, some special structure polyphenols in plum dregs fruits have some special effects. [0003] The application of polyphenols in the food industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K36/736A23L33/105
CPCA61K36/736A61K2236/33A61K2236/39A61K2236/51A61K2236/53
Inventor 宋容
Owner 宋容
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