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Extracting liquid for extracting plant polyphenol and extracting method

A solution and aqueous solution technology, applied in the direction of plant raw materials, medical raw materials derived from angiosperms, plant/algae/fungus/moss components, etc., can solve the production process, complex equipment, difficult to meet industrial production, and plant polyphenols. Low efficiency and other problems, to achieve the effect of low equipment requirements, simple method, and easy industrial production

Inactive Publication Date: 2013-12-04
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] Example 1 Preparation of related extracts

[0031] Extraction preparation:

[0032] (1) Add sodium hydroxide or potassium hydroxide or calcium hydroxide or ammonia or phosphate buffer or borax-calcium chloride buffer or ammonia-ammonium chloride buffer into hydrogen peroxide solution to obtain sodium hydroxide hydrogen peroxide solution or hydrogen 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 or phosphate buffer or borax-calcium chloride buffer or ammonia-ammonium chloride buffer to sodium hypochlorite solution to obtain sodium hydroxide and sodium hypochlorite solution or hydrogen Potassium oxide and sodium hypochlorite ...

Embodiment 2

[0044] Take 1g of pretreated rapeseed meal or rapeseed hulls (there is no restriction on the variety of rapeseed, the method of raw material pretreatment is: use a conventional crusher to crush the above raw materials, and dry them at 30-60 ℃ to reduce their moisture To less than 5%, and then pass through a 20-100 mesh sieve to obtain the pretreated raw material powder), and then add the hydrogen peroxide solution prepared in Example 1 with the phosphate buffer solution (pH is 7.77), where 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℃ for 3h, centrifuged to remove the residue (ie, the remaining raw material after leaching) to obtain an extract containing plant polyphenols. The analysis method uses Folin-phenol Colori...

Embodiment 3

[0046] Follow the method provided in implementation 2. Take 1g of the pretreated peanut shell powder, and then add the hydrogen peroxide solution (pH 7.77) prepared in Example 1 with the borax calcium chloride buffer solution (pH 7.77), and 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 hydrogen peroxide to the raw material is 1.5:1), Then it was leached at 55°C for 3h. After centrifugal separation, the residue (that is, the remaining raw materials after the extraction) is removed, and an extract containing plant polyphenols is obtained. Using Folin-phenol colorimetry at 765 nm, the yield of plant polyphenols in this example was 8.99 mg / g.

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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 specifically relates to a kind of extract from rapeseed meal or rapeseed peel, peanut shell, apple, persimmon, grape, orange, radish, soybean, date, pomegranate peel, banana peel, sweet potato, hawthorn Plant polyphenol extracts and extraction methods for extracting plant polyphenols from peels, tomatoes, nuts, oats, and lychees are related to the fields of agricultural products and food processing. Background technique [0002] Plant polyphenol, also known as vegetable tannin, is a complex phenolic secondary metabolite in plants. It has a polyphenol structure and mainly exists in the bark, root, leaf, and fruit of plants. Its content is second only to cellulose, hemicellulose and lignin. Flavonoids in polyphenols are antioxidants. Medical research has shown that oxidative damage is an important cause of many chronic diseases, such as cardiovascular disease, cancer and aging d...

Claims

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Application Information

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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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