Synthesis and characterization of magnetic molecularly imprinted polymers for effective extraction and determination of kaempferol from apple samples
文献类型： 外文期刊
第一作者： Cheng, Yang
作者： Cheng, Yang;Nie, Jiyun;Liu, Hongdi;Kuang, Lixue;Xu, Guofeng;Nie, Jiyun
作者机构：
关键词： Magnetic molecularly imprinted polymers; Kaempferol; Surface molecular imprinting; Selective extraction; Apple samples
期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.759； 五年影响因子：4.302 ）
ISSN： 0021-9673
年卷期： 2020 年 1630 卷
页码：
收录情况： SCI
摘要： The specific of magnetic molecularly imprinted polymers (Fe3O4@SiO2-MIPs) for kaempferol were fabricated by using acrylamide (AM) as the functional monomer, azobisisobutyronitrile (AIBN) as the initiator and ethylene glycol dimethacrylate (EGDMA) as the cross-linker. The Fe3O4@SiO2-MIPs showed high adsorption capacity (3.84 mg/g) for kaempferol, and the adsorption equilibrium was achieved within 50 min. The specific recognition capacity of Fe3O4@SiO2-MIPs was 3.02 times as high as that of Fe3O4@SiO2 NIPs. The Fe3O4@SiO2-MIPs showed high selectivity towards kaempferol over structural analogues. The recoveries of proposed method at three spiked levels analysis were ranged from 90.5% to 95.4% with the relative standard deviations (RSD) less than 5%. The obtained Fe3O4@SiO2-MIPs were successfully applied for the extraction and determination of kaempferol from apple samples. The established method was simple and feasible, which showed high selectivity, fast separation and satisfactory recoveries for real sample analysis. (C) 2020 Elsevier B.V. All rights reserved.
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