采用磁性分子印迹聚合物纳米粒子快速、选择性地从牛奶中提取诺氟沙星。
Rapid and selective extraction of norfloxacin from milk using magnetic molecular imprinting polymers nanoparticles.
机构信息
College of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
College of Food Science and Technology, Hunan Provincial Key Laboratory of Food Science and Biotechnology, Hunan Agricultural University, Changsha 410128, PR China.
出版信息
Food Chem. 2021 Aug 15;353:129464. doi: 10.1016/j.foodchem.2021.129464. Epub 2021 Mar 7.
The magnetic molecular imprinting polymers nanoparticles (MMIPs NPs) for the extraction of norfloxacin (NOR) were prepared by self-polymerization of dopamine onto the surface of (3-Aminopropyl)triethoxysilane (APTES)-modified FeO NPs. The MMIPs NPs were characterized by FT-IR spectroscopy, XRD, VSM and TEM. The characterization results show that the MMIPs NPs possess superparamagnetic characteristic with the saturated magnetization value of 38.6 emu/g, and the average particle size of about 14.3 nm. Furthermore, the adsorption performance of the MMIPs NPs was evaluated by the static, dynamic, selective adsorption and reusability experiments. The adsorption capacity of MMINs NPs for NOR is 14.2 mg/g with an imprinted factor of 2.1. About 82.4-102.4% of the added NOR (20, 40, 60 μg/mL) were recovered from fortified milk samples with MMIPs NPs as sorbent. Moreover, the MMIPs NPs can be reused for at least six times.
用于提取诺氟沙星（NOR）的磁性分子印迹聚合物纳米粒子（MMIPs NPs）是通过多巴胺自聚合在（3-氨丙基）三乙氧基硅烷（APTES）改性的 FeO NPs 表面上制备的。MMIPs NPs 通过傅里叶变换红外光谱（FT-IR）光谱、X 射线衍射（XRD）、振动样品磁强计（VSM）和透射电子显微镜（TEM）进行了表征。表征结果表明，MMIPs NPs 具有超顺磁性，饱和磁化强度值为 38.6 emu/g，平均粒径约为 14.3nm。此外，通过静态、动态、选择性吸附和可重复使用性实验评估了 MMIPs NPs 的吸附性能。MMINs NPs 对 NOR 的吸附容量为 14.2mg/g，印迹因子为 2.1。用 MMIPs NPs 作为吸附剂从添加 NOR（20、40、60μg/mL）的牛奶样品中回收了约 82.4-102.4%的 NOR。此外，MMIPs NPs 至少可重复使用六次。
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