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A method for selective enrichment of peanut shell polyphenols using magnetic microspheres

A technology of peanut shell polyphenols and magnetic microspheres, which is applied in the direction of selective adsorption, chemical instruments and methods, ion exchange regeneration, etc., can solve the problems of inability to wrap magnetic particles, low formation efficiency, environmental pollution, etc., and achieve magnetic enrichment The effect of simple separation, high utilization rate and wide source of raw materials

Active Publication Date: 2020-05-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional polymer encapsulation method for magnetic particles is not efficient, and cannot be effectively wrapped on the surface of magnetic particles, resulting in waste of materials and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 40 mg of Fe3O4 nanoparticles were stirred and mixed with an aqueous solution (1 mmol / mL) containing 2 mg of tannic acid (stirring time 10 min), and the tannic acid was coated on the surface of the magnetic particles (TLC monitored the total adsorption of tannic acid). Then add 1.2 ml of water, N-vinylpyrrolidone (1.33 mmol), N-isopropylacrylamide (0.67 mmol), ethylene glycol dimethacrylate (0.16 mmol), azobisisobutyl Nitrile (0.05 mmol), sodium dodecylbenzenesulfonate (1 mg), nitrogen protection. Put it on a thermo-oscillating reactor and heat it to 60 degrees Celsius for 1 hour, remove the supernatant, wash 3 times with ethanol, and then wash 5 times with water to obtain magnetic solid-phase extraction agent particles, namely magnetic microspheres. Thermogravimetric analysis shows 60% of the monomer raw material is coated with magnetic particles.

Embodiment 2

[0031] 40 mg of Fe3O4 nanoparticles were stirred and mixed with an aqueous solution (1 mmol / mL) containing 3 mg of tannic acid (stirring time 10 min), and the tannic acid was coated on the surface of the magnetic particles (TLC monitored the total adsorption of tannic acid). Then add 1.2 ml of water, N-vinylpyrrolidone (1.33 mmol), N-isopropylacrylamide (0.8 mmol), ethylene glycol dimethacrylate (0.16 mmol), azobisisobutyl Nitrile (0.05 mmol), sodium dodecylbenzenesulfonate (1.5 mg), nitrogen protection. Put it on a thermo-oscillating reactor and heat it to 60 degrees Celsius for 1 hour, remove the supernatant, wash 3 times with ethanol, and then wash 5 times with water to obtain magnetic solid-phase extraction agent particles, namely magnetic microspheres. Thermogravimetric analysis shows 65% of the monomer raw material is coated with magnetic particles.

Embodiment 3

[0033] 40 mg of Fe3O4 nanoparticles were stirred and mixed with an aqueous solution (1 mmol / mL) containing 5 mg of tannic acid (stirring time 10 min), and the tannic acid was coated on the surface of the magnetic particles (TLC monitored the total adsorption of tannic acid). Then add 1.2 ml of water, N-vinylpyrrolidone (1.33 mmol), N-isopropylacrylamide (0.8 mmol), ethylene glycol dimethacrylate (0.16 mmol), azobisisobutyl Nitrile (0.05 mmol), sodium dodecylbenzenesulfonate (1 mg), nitrogen protection. Put it on a thermo-oscillating reactor and heat it to 60 degrees Celsius for 1 hour, remove the supernatant, wash 3 times with ethanol, and then wash 5 times with water to obtain magnetic solid-phase extraction agent particles, namely magnetic microspheres. Thermogravimetric analysis shows 65% of the monomer raw material is coated with magnetic particles.

[0034] The magnetic solid phase extraction agent FT-IR test data that embodiment 1~3 obtains shows that 3300-3500cm -1 N-...

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Abstract

The invention discloses a peanut shell polyphenol selective enriching method using magnetic microspheres. The peanut shell polyphenol selective enriching method comprises the following steps of enabling a magnetic microsphere adsorbent to adsorb a peanut polyphenol solution; enabling a magnet to separate the magnetic microsphere adsorbent after absorbing; finally, utilizing an organic solvent to desorb, so as to obtain the enriched peanut polyphenol, wherein the magnetic microsphere absorbent is an amido bond-containing polymer absorbent which uses magnetic Fe3O4 (ferroferric oxide) as a core,uses tannic acid as a middle adsorbing layer, and uses an amido bond-containing polymer as an outer shell. The peanut shell polyphenol selective enriching method has the advantages that the selectiveadsorption function is realized on the phenol matters by the amido bonds at the surface of the magnetic microsphere, so that the peanut shell polyphenol can be selectively enriched, the desorbing process is simple, and the enriching efficiency is greatly improved; the adsorbent has magnetic property, and can be enriched by the magnet after the adsorbent is dispersed into the solution, and the enriching is convenient and quick; the sources of raw materials for preparing the adsorbent are broad, the price is low, the preparation technology is simple and convenient, and the adsorbent is suitablefor industrialized production.

Description

technical field [0001] The invention belongs to the field of food and medicine processing, and in particular relates to a selective enrichment method for peanut shell polyphenols. Background technique [0002] Peanut is one of the five major oil crops in the world. my country's peanut planting area ranks among the top in the world. In recent years, the annual output has reached more than 15 million tons, and the annual output of peanut shells is about 4.5 million tons. Peanut shells are rich in polyphenols, which act as food antioxidants. At present, the utilization rate of peanut shells in my country is very low. Except for a small amount as roughage, a large amount of peanut shells are burned or thrown away, wasting resources. Making full use of peanut shells is of great significance for the comprehensive utilization of peanuts, increasing economic benefits and protecting the environment. Peanut shell polyphenols have excellent antioxidant effects. With the rise of the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/08B01J20/26B01J20/28B01J20/30
CPCB01D15/08B01J20/06B01J20/22B01J20/264B01J20/28009B01J20/28021B01J2220/46B01J2220/4806B01J2220/4812
Inventor 刘松柏蔡赫
Owner ZHEJIANG UNIV