Food safety is a worldwide concern and is directly related to human health.Therefore,convenient,effective,and economical methods and technologies for food safety analysis have been developed continuously.Magnetic mole...Food safety is a worldwide concern and is directly related to human health.Therefore,convenient,effective,and economical methods and technologies for food safety analysis have been developed continuously.Magnetic molecularly imprinted polymers(MMIPs)have gained extensive attention in recent years,as they have high selectivity,high adsorption capacity,and are easy to isolate from food samples.Recently,advanced strategies for the synthesis of MMIPs have been proposed to solve problems of template leakage and non-specific adsorption,and to increase the biocompatibility,adsorption rate,as well as adsorption capacity of the imprinted materials.In this review,we focus on new attempts at modification of magnetic core and MMIPs’surfaces,and the selection of template,functional monomer,cross-linker as well as porogen.Studies are summarized that used advanced MMIPs for the recognition and adsorption of pesticide residues,veterinary drug residues,mycotoxins,contaminants,and adulterations in foodstuffs over the last 5 years.Finally,some still existing challenges and future prospects to further promote MMIPs properties are also discussed.展开更多
以羧基化的Fe_(3)O_(4)纳米粒子为载体,6-苄氨基腺嘌呤为模板分子,甲基丙烯酸和对苯乙烯磺酸钠为复合功能单体,采用表面印迹技术制备磁性分子印迹纳米粒子,优化其制备条件和富集分离6-苄氨基腺嘌呤的条件。结果表明,当甲基丙烯酸和对苯...以羧基化的Fe_(3)O_(4)纳米粒子为载体,6-苄氨基腺嘌呤为模板分子,甲基丙烯酸和对苯乙烯磺酸钠为复合功能单体,采用表面印迹技术制备磁性分子印迹纳米粒子,优化其制备条件和富集分离6-苄氨基腺嘌呤的条件。结果表明,当甲基丙烯酸和对苯乙烯磺酸钠的物质的量比为3∶1,羧基化Fe3O4纳米粒子的添加量为0.25 g,洗脱液甲醇-乙酸溶液的体积比为9∶1时,所制备的磁性分子印迹纳米粒子吸附性能最佳,其吸附容量和特异性均优于相同条件下基于单功能单体制备的磁性分子印迹纳米粒子。应用所制备的磁性分子印迹纳米粒子12 mg,对4 mL 20μg/mL的6-苄氨基腺嘌呤进行静置吸附,其吸附效率可达94.10%。该研究为蔬菜中残留的6-苄氨基腺嘌呤的高效富集分离,提供了一种简便快速的方法。展开更多
基金This work was supported by the National Key Research and Development Programs of China(2022YFF1100900).
文摘Food safety is a worldwide concern and is directly related to human health.Therefore,convenient,effective,and economical methods and technologies for food safety analysis have been developed continuously.Magnetic molecularly imprinted polymers(MMIPs)have gained extensive attention in recent years,as they have high selectivity,high adsorption capacity,and are easy to isolate from food samples.Recently,advanced strategies for the synthesis of MMIPs have been proposed to solve problems of template leakage and non-specific adsorption,and to increase the biocompatibility,adsorption rate,as well as adsorption capacity of the imprinted materials.In this review,we focus on new attempts at modification of magnetic core and MMIPs’surfaces,and the selection of template,functional monomer,cross-linker as well as porogen.Studies are summarized that used advanced MMIPs for the recognition and adsorption of pesticide residues,veterinary drug residues,mycotoxins,contaminants,and adulterations in foodstuffs over the last 5 years.Finally,some still existing challenges and future prospects to further promote MMIPs properties are also discussed.
文摘以羧基化的Fe_(3)O_(4)纳米粒子为载体,6-苄氨基腺嘌呤为模板分子,甲基丙烯酸和对苯乙烯磺酸钠为复合功能单体,采用表面印迹技术制备磁性分子印迹纳米粒子,优化其制备条件和富集分离6-苄氨基腺嘌呤的条件。结果表明,当甲基丙烯酸和对苯乙烯磺酸钠的物质的量比为3∶1,羧基化Fe3O4纳米粒子的添加量为0.25 g,洗脱液甲醇-乙酸溶液的体积比为9∶1时,所制备的磁性分子印迹纳米粒子吸附性能最佳,其吸附容量和特异性均优于相同条件下基于单功能单体制备的磁性分子印迹纳米粒子。应用所制备的磁性分子印迹纳米粒子12 mg,对4 mL 20μg/mL的6-苄氨基腺嘌呤进行静置吸附,其吸附效率可达94.10%。该研究为蔬菜中残留的6-苄氨基腺嘌呤的高效富集分离,提供了一种简便快速的方法。
