Broad-spectrum aflatoxin adsorption column filling material and preparation method thereof

A technology of aflatoxin and filling material, applied in the field of composite materials, can solve the problems of low degradation and detoxification ability, lack of sustainable utilization, low reuse rate, etc., and achieve good removal ability, good ability to absorb aflatoxin, Practical effect

Pending Publication Date: 2020-10-13
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most methods have the disadvantages of low degradation and detoxification ability, low reuse rate, time-consuming and cumbersome, etc.
Therefore, the existing technolo

Method used

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  • Broad-spectrum aflatoxin adsorption column filling material and preparation method thereof
  • Broad-spectrum aflatoxin adsorption column filling material and preparation method thereof
  • Broad-spectrum aflatoxin adsorption column filling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1

[0044] Take 50mg of zirconium tetrachloride, 70mg of 1,2,4,5-phenylcarboxybenzene, and 2700mg of benzoic acid in a beaker, add DMF32mL, and ultrasonicate for 15min to make it fully dispersed and mixed to prepare a mixed solution;

[0045] Add about 100 mg of melamine sponge to the above mixed solution and ultrasonicate for 15 minutes to form a mixture, pour the mixture into the reactor, and react at 120°C for 12 hours;

[0046] After the reaction is completed, take out the melamine sponge and wash it with DMF twice, then put the melamine sponge into the reconfigured mixed solution for reaction, repeat the above steps to make the reaction proceed 6 times in total;

[0047] Then take out the melamine sponge and wash it twice with methanol, and dry it at 60°C for 12 hours to obtain the zirconium-containing metal organic frame material filling material.

[0048] Scanning electron microscope analysis and comparison of zirconium metal organic frame filling materials, such a...

Example Embodiment

[0050] Example 2

[0051] The filling material has to be used repeatedly to test the effect:

[0052] Configure aflatoxin B1 (50uM) to dilute with ultrapure water, take 3mg of filling material to fill the empty column for solid phase extraction, use deionized water for activation in advance, use 1mL aflatoxin B1 to pass into the column, collect the filtrate, and measure the absorbance of the filtrate . Comparison before and after filtering Figure 4 ,by Figure 4 It can be seen that the filling material has a good effect of releasing aflatoxin B1. After repeating the above experiment and filtering 5 times, it can be seen that there is basically no obvious change in the removal rate each time. Figure 5 , Which shows that the filling material has a good re-use rate.

[0053] Application experiment of filling material to remove aflatoxin B1 in water:

[0054] Configure 50uM aflatoxin B1 solution, use tap water, river water, rain water, field water to dilute, mix well, detect absorbanc...

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Abstract

The invention discloses a broad-spectrum aflatoxin adsorption column filling material and a preparation method thereof. The preparation method comprises the following steps of: ultrasonically mixing 4-carboxyphenyl benzene, zirconium tetrachloride, benzoic acid and N, N-dimethylformamide to obtain a mixed solution; putting sponge into the mixed solution to perform ultrasonic mixing so as to obtaina mixture; and carrying out a thermal solvent reaction on the mixture to obtain a filling material coated with a zirconium metal-organic framework material, and filling the zirconium metal-organic framework material filling material into an adsorption column to develop an adsorption column having a strong adsorption effect on a variety of aflatoxins (AFB1, AFB2, AFG1, AFG2 and AFM). The obtainedproduct can adsorb various aflatoxins; the adsorption rate of the product for aflatoxin B1 reaches 90% or above; the product has a good effect when used for removing aflatoxins in water; the pollutionof the aflatoxins to water can be effectively reduced; and the product can be repeatedly used and is easy and convenient to operate.

Description

technical field [0001] The invention relates to a sponge composite material and a preparation method in the technical field of composite materials, in particular to a broad-spectrum aflatoxin adsorption column filling material for absorbing aflatoxin and a preparation method thereof. Background technique [0002] Aflatoxins are mainly secondary metabolites produced by Aspergillus flavus, Aspergillus parasiticus, mainly composed of dihydrofuran ring and coumarin, with a molecular mass between 312 and 346. It is highly toxic and carcinogenic. There are many kinds of aflatoxins, usually divided into B, G, M and other derivatives. The B group has blue-violet light under the ultraviolet light, and the G group has green light. The B family mainly includes B1 and B2, the G family has two types, G1 and G2, and the M family has two types, M1 and M2. Among them, aflatoxin B1 can be derived from M1 and M2. [0003] Aflatoxins are mostly distributed in soil, animals and plants, and ...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01D15/42B01D15/22C02F103/00C02F101/38
CPCC02F1/28B01D15/22B01D15/426C02F2103/007C02F2101/38C02F2303/16
Inventor 徐霞红权浩然何开雨王柳
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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