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Quercetin surface imprinted polymer and application thereof

A technology of surface imprinting and quercetin, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of easy clogging and limited selection of fillers, and achieve good precision, reliable and feasible methods, and good accuracy Effect

Inactive Publication Date: 2019-08-23
HENAN UNIVERSITY OF TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SPE method also has the following disadvantages: it is easy to clog itself, the range of packing options is limited, and it can only be used to separate compounds with very different retention properties. The performance of the column is affected by factors such as pH value, solvent type, and ionic strength.
At present, there is no use of metal-organic framework materials as carriers to prepare surface molecularly imprinted polymers for the detection of wheat toxins

Method used

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  • Quercetin surface imprinted polymer and application thereof
  • Quercetin surface imprinted polymer and application thereof
  • Quercetin surface imprinted polymer and application thereof

Examples

Experimental program
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Embodiment 1

[0044] (1)UiO-66-NH 2 Synthesis of carrier materials

[0045] ZrCl 4 (0.84g; 3.60mmol) was dissolved in DMF (40ml), and concentrated HCl (8ml) was added to the solution, ultrasonically oscillated for 20min, magnetically stirred at 130°C for 2h, and cooled to room temperature. 2-aminoterephthalic acid (0.84 g, 4.65 mmol) was dissolved in DMF (40 ml) and poured into ZrCl 4 in solution. The final mixture was stirred magnetically at 50°C for 24 hours, then a yellow solid was isolated by vacuum filtration, washed three times with DMF, and the solvent was exchanged with chloroform. The yellow compound was heated at 80°C under vacuum for 24 hours.

[0046] (2) Modification of carrier materials

[0047] Sonicate UiO-66-NH 2 (0.60g) was dissolved in THF (50ml) for 20min, and GMA (2.12ml, 16mmol) was added to the solution. The mixture solution was magnetically stirred at a reaction temperature of 60° C. for 24 hours, a yellow solid was recovered by filtration, washed several time...

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Abstract

The invention belongs to the field of molecularly imprinted polymers, and relates to a quercetin surface imprinted polymer and application of the quercetin surface imprinted polymer in detection of toxins of wheat and other crops. Quercetin is used as an alternative template of the polymer, UAO-66-NH2 is selected as a carrier material for surface imprinting, and the surface imprinted polymer is prepared by using a chemical grafting method. The synthesized polymer is used as an adsorbent to prepare a surface imprinted solid phase extraction column, and aflatoxin in food is extracted and separated, so that a simple, rapid, efficient and sensitive method for detecting aflatoxin in wheat samples is formed. When the separation enrichment effect is compared with that of commercial columns and immunoaffinity columns, aflatoxin can be adsorbed selectively, and the selectivity and adsorption capacity of aflatoxin are better; and furthermore, development of sample pretreatment for crop toxin detection is facilitated, and the problems of high cost and large time consumption of current pretreatment methods are solved.

Description

technical field [0001] The invention belongs to the field of molecularly imprinted polymers, and relates to a quercetin surface imprinted polymer and its application in the detection of toxins in crops such as wheat. Background technique [0002] Crops such as corn, wheat, rice, soybeans, and fodder are easily contaminated by mycotoxins during storage and processing. The more common mycotoxins include aflatoxin (AFT), zearalenone (ZEN), Ochratoxins (ochratoxins), etc. When humans eat food contaminated by fungi, mycotoxins will enter the human body; after animals ingest moldy crops or their processed products (such as: feed), mycotoxins can be deposited in the body of poultry and livestock and passed through the food chain , will eventually enter the human body, and eventually damage human organs under the influence of mycotoxins, endangering human life and health. Among the common mycotoxins, AFT has received extensive attention and research. It can contaminate almost all ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F220/56C08F220/32C08J9/26B01J20/26B01J20/30C08G83/00
CPCB01J20/268C08F283/00C08F285/00C08G83/008C08J9/26C08J2201/0422C08J2351/08C08F220/56C08F220/325
Inventor 宋立新何娟许红梁雨涛李媛媛游利琴黄志鹏王慧格张云霞
Owner HENAN UNIVERSITY OF TECHNOLOGY
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