Aflatoxin surface imprinted polymer based on HKUST-1 and application of polymer

A technology of HKUST-1 and aflatoxin, which is applied to the detection of aflatoxin surface imprinted polymers and crops, can solve the problems of difficult template molecule elution, irregular polymer shape, and low mass transfer rate. Achieve the effect of eliminating template leakage, fast mass transfer rate and high specific surface area

Inactive Publication Date: 2019-09-06
HENAN UNIVERSITY OF TECHNOLOGY +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Although the combination of molecular imprinting and solid phase extraction can effectively extract target molecules, traditional molecular imprinting polymers also have some disadvantages: it is not easy to completely elute the template molecules; the mass transfer rate is low; the shape of the polymer is irregular; Lower adsorption capacity, etc. (Wang Y, Yang Y, Lan X, et al.Bisphenol A sensing based on surface molecularly imprinted, ordered mesoporous silica[J], ElectrochimicaActa,201

Method used

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  • Aflatoxin surface imprinted polymer based on HKUST-1 and application of polymer
  • Aflatoxin surface imprinted polymer based on HKUST-1 and application of polymer
  • Aflatoxin surface imprinted polymer based on HKUST-1 and application of polymer

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Embodiment 1

[0037] (1) Synthesis of HKUST-1

[0038] Take 3.15g (15mmol) of bis(trichloromethyl)carbonate (BTC), add 75mL of ethanol, and sonicate until the BTC is completely dissolved. Accurately weigh 6.05g (25mmol) Cu(NO 3 ) 2 ·3H 2 O In another beaker, add 75mL H 2 O, ultrasonic, to Cu(NO 3 ) 2 ·3H 2 O is completely dissolved. Mix the solutions in the two beakers, stir them magnetically for 20min, pour them into a hydrothermal reactor, react at 120°C for 12h, filter, wash with ethanol three times to remove unreacted BTC, then wash with water three times to remove unreacted Cu(NO 3 ) 2 ·3H 2 O, filtered, and dried at 150°C to obtain a purple solid, namely dehydrated HKUST-1.

[0039] (2) Synthesis of HKUST-1@MIPs

[0040] Accurately weigh 0.0654g (0.3mmol) 7-acetoxy-4-methylcoumarin, add 0.1518mL (1.8mmol) α-MAA, 2.2656mL (12mmol) EGDMA, then add 0.04g AIBN, after ultrasonication for 10min Move to a three-neck flask, add ethanol, stir magnetically at 80° C. for 5 h, and dry...

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Abstract

The invention belongs to the field of molecularly imprinted polymers and discloses an aflatoxin surface imprinted polymer and application thereof in crop detection. The surface imprinted polymer HKUST-1@MIPs is synthesized by using a metal organic framework material HKUST-1 as a carrier and 7-acetoxy-4-methylcoumarin as a substitute template of aflatoxin. The synthesized polymer is used as an adsorbent to prepare a surface imprinting solid-phase extraction column to extract and separate aflatoxin in food, and correspondingly a rapid, efficient and cheap aflatoxin sample pretreatment method isobtained; a detection method of aflatoxin in food, which is low in price, simple in operation and low in detection limit, is developed in combination with high performance liquid chromatography. The pretreatment development of crop toxin detection samples 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 an aflatoxin surface imprinted polymer and its application in the detection of crops. Background technique [0002] During the process of growth, harvesting, storage and processing, crops are susceptible to fungal infection and produce aflatoxins (Aflatoxins, AFs). Some biological systems and organs in the human body have serious toxic and carcinogenic effects. The AFs produced by the metabolism of Aspergillus flavus will remain in the agricultural products. If the agricultural products are processed into food, they will cause damage to the human body after human consumption; if the agricultural products are processed into feed to feed livestock, AFs will accumulate in the livestock. When people use meat Such products are still at risk from AFs. There are many types of AFs, and there are some differences in the structures of different types of AFs. Among them, aflato...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F220/06C08G83/00B01J20/281G01N30/02G01N30/06G01N30/14G01N30/08G01N30/74G01N30/86
CPCB01J20/281C08F222/1006C08G83/00C08F222/102G01N30/02G01N30/06G01N30/08G01N30/14G01N30/74G01N30/8637G01N2030/062G01N2030/146
Inventor 何娟许红宋立新芮超凡李媛媛游利琴黄志鹏王慧格张云霞
Owner HENAN UNIVERSITY OF TECHNOLOGY
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