纳米磁珠的制备工艺及对茶多酚的萃取研究  

Study on the preparation technecnology of nano magnetic bead and extraction of tea polyphenols

作　　者：殷金可 侯巧芝[1] 方宁 孙会婷 YIN Jin-ke;HOU Qiao-zhi;FANG Ning;SUN Hui-ting(School of Medicine,Huanghe Science and Technology University,Zhengzhou 450063,Henan,China)

机构地区：[1]黄河科技学院医学院,河南郑州450063

出　　处：《粮食与油脂》2020年第9期107-110,共4页Cereals & Oils

基　　金：2017年国家级大学生创新创业训练计划(201711834050);黄河科技学院大学生创新创业训练计划(2017XSCXCYZD001)。

摘　　要：通过单因素试验和正交试验研究纳米磁珠的最佳制备工艺,研究Fe3+/Fe2+摩尔比、总铁浓度、p H和反应温度对制备的影响。然后用丙烯酰胺、乙腈、甲基丙烯酸,在偶氮二异丁腈做引发剂的条件下对纳米磁珠进行功能化修饰以萃取茶叶中的多酚类物质。结果表明:最佳制备条件为Fe3+/Fe2+摩尔比2∶1、总铁浓度0.15 mol/L、p H 10、反应温度50℃。用该制备材料萃取茶多酚吸附率为25.7%、解吸率为85.7%,说明功能化纳米磁珠可以实现茶多酚的快速提取分离。The optimal preparation technology of nano magnetic bead were studied by single factor test and orthogonal test.The effects of Fe3+/Fe2+molar ratio,total iron concentration,p H and reaction temperature on preparation were studied.The nano magnetic beads were functionalized by using acrylamide,acetonitrile,methacrylic acid,azodiisobutyronitrile as initiator in order to extract polyphenols from tea.The results showed that the optimal preparation conditions were Fe3+/Fe2+molar ratio 2∶1,total iron concentration 0.15 mol/L,p H 10,and reaction temperature 50℃.The adsorption rate was 25.7%and the desorption rate was 85.7%.It can conaclude that the functionalized nano magnetic beads can achieve the extraction and separation of tea polyphenols rapidly.

关 键 词：FE3O4 制备 功能化修饰 固相萃取 

分 类 号：TS201.1[轻工技术与工程—食品科学]