Selective recognition and fast enrichment of anthocyanins by dummy molecularly imprinted magnetic nanoparticles

文献类型： 外文期刊

第一作者： Zhao, Qian-Yu

作者： Zhao, Qian-Yu;Zhao, Hai-Tian;Yang, Xin;Zhang, Hua;Dong, Ai-Jun;Wang, Jing;Li, Bin

作者机构：

关键词： Magnetic molecularly imprinted polymers; Surface imprinting method; Dummy template; Cyanidin-3-O-rutinoside

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： 2018 年 1572 卷

页码：

收录情况： SCI

摘要： In this work, a novel synthetic strategy for separation media which quickly specific recognize anthocyanins was developed by dummy molecular imprinting technology and magnetic separation technology. Rutin, similar to cyanidin-3-O-rutinoside structure, was selected as a virtual template. The appropriate molecular imprinting system was selected by NIP library screening method, 4-vinyl pyridine and acetonitrile as functional monomer and solvent respectively. The molecularly imprinted layer was formed on the surface of the magnetic carrier to prepare dummy magnetic molecularly imprinted polymers. The microstructures of prepared composites were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA) and X-ray diffraction (XRD). Adsorption kinetics, isothermal adsorption curves and selective specificity were investigated to further reveal the specific recognition mechanism of the adsorbents on anthocyanins. The dummy molecularly imprinted polymers showed a short kinetic equilibrium time, high selectivity (comparing with quercetin and naringin), and satisfying adsorption capacity for anthocyanins. The binding capacity and the imprinting factor of dummy molecularly imprinted polymers can reach 15.69 mg g(-1) and 2.05, respectively. In addition, the purity of cyanidin-3-0-rutinoside in the crude extract from Lonicera caerulea increased to 89% after the adsorption of dummy magnetic molecular imprinted polymers. Many favorable capabilities of the prepared molecularly imprinted polymers also provided the basis for further application for separation and purification of anthocyanins in the future. (C) 2018 Elsevier B.V. All rights reserved.

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