核-壳型赤藓红分子印迹聚合物的制备及吸附性能的评价  

Synthesis of Core-Shell Molecularly Imprinted Polymer of Erythrosine and the Evaluation of Its Adsorption Ability

作　　者：严恒 刘静静 沈正雨 张瑞 胡莹莹 谢卫红 

机构地区：[1]湖北省食品质量安全监督检验研究院,湖北武汉430073 [2]湖北工业大学生物工程与食品学院,湖北武汉430068

出　　处：《分析科学学报》2017年第6期785-789,共5页Journal of Analytical Science

基　　金：湖北省食品质量安全监督检验研究院科技项目

摘　　要：以氨基化修饰的SiO_2为内核,人工合成色素赤藓红为模板,甲醇/水为溶剂,4-乙烯基吡啶为功能单体,二甲基丙烯酸乙二醇酯为交联剂,偶氮二异丁腈为引发剂,采用表面印迹技术,制备核-壳型赤藓红分子印迹聚合物。通过红外光谱对其结构进行表征,并通过动力学吸附、等温饱和吸附和实际样品加标实验对其吸附性能进行评价。结果表明,核-壳型赤藓红分子印迹聚合物具有较快的吸附能力,在15min左右达到吸附平衡,有较好的吸附容量,能够从复杂的食品样品中选择性吸附模板,且回收可达85%。Core-shell erythrosine molecularly imprinted polymers （MIP） were prepared through the surfaceimprinting technology using amino-modified silica as the core, erythrosine as the template, 4-vinyl pyridine as thefunctional monomer, ethylene glycol dimethacrylate as the cross-linking agent, azobisisobutyronitrile as theinitiator,and methanol/water as the solvent. The core-shells structure of the erythrosine molecularly imprintedpolymer was characterized using a Fourier transform infrared spectrometer. The adsorption ability of the MIPwas evaluated by kinetic adsorption,isothermal saturated adsorption and actual sample experiments. The resultsshowed that the core-shell type erythrosine molecularly imprinted polymer exhibited a fast adsorption with anadsorption equilibrium time within 15 rain and a high adsorption capacity. Actual sample experiments indicatedthat the MIP could selectively adsorbed template from complex food samples with a high recovery rate of 85 %.

关 键 词：赤藓红 分子印迹聚合物 分子印迹技术 固相萃取 

分 类 号：O658.1[理学—分析化学]