Application of metal organic framework material in removal of aflatoxin and method for removing aflatoxin
A metal organic framework, aflatoxin technology, applied in the field of analysis and detection, can solve the problems of high cost and slow aflatoxin removal rate, and achieve the effect of cost saving
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[0037] According to the present invention, when the hydrogen peroxide is combined, the metal organic frame material having enzyme activity is preferably a metal organic frame material having a type of hydrogenase activity when the yellowlaxin in the sample is combined. Therefore, as a preferred embodiment of a metal organic frame material having an enzyme activity in the present invention, the preparation method thereof includes the following steps: Polyvinylpyrrolidone, citric acid, L-ascorbic acid, iron-based organic skeleton material particles (MOF) (Fe) Particles) After mixing the solvent I, the reaction I is mixed with the PD stock solution, and the metal organic frame material PD @ Mof (Fe) having a catalase activity is prepared, and the preparation process is for Remove the principle of xylushin toxin figure 1 Indicated. The inventors have found that in this preferred embodiment, the solution of the invention has the advantage of further improving the removal rate of xeroxi...
Embodiment 1
[0070] (1) the pyrrole (3.0g, 0.043mol) and the counter-formylbenzoate (6.9g, 0.042mol) was placed in a 250mL three-neck flask, was added 100mL organic acid so obtained mixture was completely dissolved, mixing after 1h was placed in an oil bath of 140 deg.] C heated to reflux cooled to room temperature, was added 50mL of anhydrous ethanol at 4 ℃ overnight, suction filtered to give a crude solid product was washed respectively with ethanol and twice with ethyl acetate, the crude solid was finally The product is purified and dried to give a purple porphyrin precursor;
[0071] (2) The step (1) to give the porphyrin precursor (1.0g) and ferrous chloride tetrahydrate (2.5g) was dissolved in 100mL of N, N- dimethyl formamide, 100 ℃ reflux for 4h, cooled to room temperature, 150mL water was added and the resulting precipitate was filtered, washed with water and dissolved, and the resulting solid was washed with methylene chloride, and then extracted with aqueous HCl, the organic layer w...
Embodiment 2
[0076] (1) Placepyrrole (3.0 g) and the formation of methyl formate (6.0 g) in a 250 ml of tri-neck flask, then add 100 ml of propionic acid to completely dissolve the organic matter to obtain a mixture, place the mixed liquid in the oil bath pan. After cooling at 120 ° C for 2 hours, 50 ml of anhydrous ethanol was added at 1 ° C overnight, and the solid crude product was filtered, each was washed twice with ethanol and ethyl acetate, and finally the solid crude product was dried and purified to obtain purple Porphi Pigncoprope
[0077] (2) The porphyrin precursor (1.0 g) obtained by step (1) is dissolved in 100 mL of N, N-dimethylformamide, 80 ° C for 5 h, cool to After room temperature, 150 ml of water was added, and the resulting precipitate was filtered, washed with water, and then the resulting solid was dissolved with dichloromethane, then extracted with HCl and water, the organic layer was spurly obtained by purple powder;
[0078] (3) The purple powder (1 g) obtained by st...
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