Inventors: Wang LB, Xu CL, Xu Z, Ding L, Jiao YN, Xu LG, Chen L
Patent Title: Preparation of bisphenol A submicron magnetic molecular imprint and application of same in detection pre-processing of packaged food
Publication date: 2012
Publication number: CN102304205

Abstract: The invention provides a preparation of a bisphenol A submicron magnetic molecular imprint and application of the same in the detection pre-processing of packaged food, which belong to the technical field of material chemistry and food safety. A surface molecular imprinting technology and a magnetic solid-phase extraction technology are combined, and a magnetic submicron particle wrapped by a surface molecular imprint polymer (Fe3O4@MIP) is prepared by using a bisphenol A as a template molecule. A magnetic submicron material (Fe3O4) is synthesized by a hydrothermal process, the synthesized Fe3O4 is synthesized into a silicon-wrapped magnetic microsphere (Fe3O4@SiO2) by a sol gel process, the synthesized Fe3O4@SiO2 is coupled with 2-bromo-isobutyryl bromide to form Fe3O4@SiO2@Br with Br groups on the surface, and the synthesized Fe3O4@SiO2@Br is synthesized into a submicron particle with a surface molecular imprint (Fe3O4@MIP) by an atom radical transfer process. The prepared Fe3O4@MIP is used in the detection pre-processing of packaged food which comprises liquid food, liquid food containing a certain quantity of solids and solid food.
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