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A kind of extraction solution and extraction method for extracting plant polyphenols

A technology for extracting solution and solution, applied in the field of plant polyphenol extracting solution, which can solve the problems of difficult to meet industrialized production, production process, complex equipment, low yield of plant polyphenols, etc., achieve low equipment requirements, simple method, and easy industrialization The effect of production

Inactive Publication Date: 2015-08-26
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the yield of plant polyphenols extracted by these methods is not high, and the production process and equipment are relatively complicated, and the cost is high, so it is difficult to meet the needs of industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 related extract preparation

[0031] Extract preparation:

[0032] (1) Add sodium hydroxide or potassium hydroxide or calcium hydroxide or ammonia water or phosphate buffer solution or borax-calcium chloride buffer solution or ammonia-ammonium chloride buffer solution to hydrogen peroxide solution to obtain sodium hydroxide hydrogen peroxide solution or hydrogen peroxide solution Potassium oxide hydrogen peroxide solution or calcium hydroxide hydrogen peroxide solution or ammonia hydrogen peroxide solution or hydrogen peroxide solution with phosphate buffer or hydrogen peroxide solution with borax-calcium chloride buffer or hydrogen peroxide solution with ammonia-ammonium chloride buffer ;

[0033] (2) Add sodium hydroxide or potassium hydroxide or calcium hydroxide or ammonia water or phosphate buffer saline or borax-calcium chloride buffer or ammonia-ammonium chloride buffer in sodium hypochlorite solution to obtain sodium hydroxide sodium hypochlorite s...

Embodiment 2

[0044] Take 1g of pretreated rapeseed cake or rapeseed skin (there is no limit to the variety of rapeseed, the method of raw material pretreatment is: use a conventional pulverizer to pulverize the above raw materials, place them in 30-60 °C and dry them to reduce their moisture content. to less than 5%, then cross 20-100 mesh sieves to obtain pretreated raw material powder) powder, then add the hydrogen peroxide solution extract (pH is 7.77), wherein the pH of the phosphate buffer is 7.7, the volume of the plant polyphenol extract used is 25mL (the mass volume ratio of the raw material to the plant polyphenol extract is 1:25), and the volume of hydrogen peroxide is 1.5mL (hydrogen peroxide The volume / mass ratio to the raw material is 1.5:1), leached at 50°C for 3 hours, and centrifuged to remove the residue (that is, the remaining raw material after leaching), to obtain an extract containing plant polyphenols. The analysis method used Folin-phenol Colorimetric method (Liu Qin...

Embodiment 3

[0046] Follow the method provided in Implementation 2. Take 1 g of the pretreated peanut shell powder, and then add the hydrogen peroxide solution extract (pH 7.77) prepared in Example 1 with the borax calcium chloride buffer solution, wherein the pH of the borax calcium chloride buffer solution is 7.7 , the volume of the plant polyphenol extract used is 25mL (the mass volume ratio of the raw material to the plant polyphenol extract is 1:25), and the volume of hydrogen peroxide is 1.5mL (the volume mass ratio of the hydrogen peroxide to the raw material is 1.5:1), Then extract at 55°C for 3h. The residue (that is, the remaining raw material after extraction) is removed by centrifugation to obtain an extract containing plant polyphenols. The yield of plant polyphenols in this example is 8.99mg / g by Folin-phenol colorimetric method at 765nm.

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Abstract

The invention belongs to the technology field of plant natural product preparation, and specifically discloses a extracting liquid for extracting plant polyphenol from rapeseed cake or rapeseed peel, peanut shell, apple, persimmon, grape, citrus, radish, soybean, jujube, pomegranate peel, banana peel, sweet potato, haw peel, tomato, nut, oat or lichee and a extracting method. The extracting liquid is a hydrogen peroxide solution with a pH value of 7.5 to 10.0, a sodium hypochlorite solution with a pH value of 7.5 to 10.0, a potassium hypochlorite solution with a pH value of 7.5 to 10.0, or a calcium hypochlorite solution with a pH value of 7.5 to 10.0. The preparation method comprises following steps: grinding the raw materials mentioned above, sieving, extracting with the extracting liquid mentioned above, optionally carrying out a supersonic treatment or a microwave treatment during the extracting process, and removing the slag through a centrifugal separation treatment so as to obtain the plant polyphenol leaching liquid. The extracting liquid for extracting plant polyphenol and the extracting method has the advantages of wide plant polyphenol sources and a very good industrial promotion and application prospect.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, and in particular relates to a method of extraction from rapeseed cake or rapeseed skin, peanut shell, apple, persimmon, grape, citrus, radish, soybean, jujube, pomegranate skin, banana skin, sweet potato, hawthorn The invention discloses a plant polyphenol extract and an extraction method for extracting plant polyphenols from skin, tomato, nuts, oats, and lychees, and is related to the field of agricultural products and food processing. Background technique [0002] Plant polyphenol (Plant polyphenol), also known as plant tannin (Vegetable tannin), is a complex phenolic secondary metabolite in plants, with a polyphenol structure, mainly found in the bark, root, leaf, and fruit of plants. The content in cellulose is second only to cellulose, hemicellulose and lignin. Flavonoids in polyphenols are antioxidants. Medical research shows that oxidative damage is an important cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/02B01J19/10A61K36/18A61K36/185A61K36/31A61K36/48A61K36/725A61K36/73A61K36/734A61K36/75A61K36/77A61K36/81A61K36/87A61K36/88A61K36/8945A61K36/899A61K8/97A61P39/06A23L1/30A23L33/105
Inventor 王承明王炜肖頔高洁芬
Owner HUAZHONG AGRI UNIV
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