数字农科院2.0

Preparation Of Core-Shell Magnetic Molecularly Imprinted Polymers For Extraction Of Patulin From Juice Samples

文献类型： 外文期刊

作者： Zhao, MJ; Shao, H; Ma, J; Li, H; He, YH; Wang, M; Jin, F; Wang, J; Abd El-Aty, AM; Hacimuftuoglu, A; Yan, FY; Wang, YL; She, YX

作者机构：

关键词： Patulin; Magnetic molecularly imprinted polymers; Juice; Magnetic dispersion solid-phase extraction; LC-MS/MS; HPLC-DAD

期刊名称： JOURNAL OF CHROMATOGRAPHY A

ISSN： 0021-9673

年卷期： 2020 年 1615 卷

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： In this study, a novel magnetic molecularly imprinted polymer (MMIP) was prepared by surface imprinting technology using 2-oxin and 6-HNA as dual virtual templates and 4-vinyl pyridine (4-VP) as the functional monomer for extraction of patulin (PAT) from the surface of magnetic nanoparticles. MMIPs were characterized by fourier transformed infrared (FT-IR) spectroscopy, X-ray diffraction, and vibrating sample magnetometry. The results showed that the molecularly imprinted polymer (MIP) was successfully coupled with magnetic nanoparticles and could be used as a magnetic selective recognition material. Moreover, MMIPs have a greater adsorption capacity for PAT than conventional MIPs. The magnetic dispersion solid-phase extraction procedure was optimized and then combined with liquid chromatography-tandem mass spectrometry (MDSPE-LC-MS/MS) for detection of PAT in juice samples. The method showed excellent analytical performance in terms of linearity (ranged between 0.5 mu g L-1 and 100 mu g L-1 with correlation coefficients (r) higher than 0.999) and limit of detection (LOD) (0.1 mu g L-1, S/N = 3). At three spiking concentrations (1, 10, and 50 mu g L-1), the mean recoveries were ranged between 79.4% and 97.9% with relative standard deviations (RSDs) < 4.7% (n = 3). (C) 2019 Elsevier B.V. All rights reserved.

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