Tannic acid directed synthesis of Fe3O4@TA@P(NVP-co-NIPAM) magnetic microspheres for polyphenol extraction
文献类型： 外文期刊
作者： Cai, He 1 ; Feng, Jin 3 ; Wang, Shanshan 1 ; Shu, Tong 2 ; Luo, Zisheng 1 ; Liu, Songbai 1 ;
作者机构： 1.Zhejiang Univ, Dept Food Sci & Nutr, Zhejiang Key Lab Agrofood Proc, Fuli Inst Food Sci,Zhejiang R&D Ctr Food Technol, 866 Yuhangtang Rd, Hangzhou 310058, Zhejiang, Peoples R China
2.Qinghai Food Inspect & Testing Inst, 12 Beidajie, Xining 810000, Qinghai, Peoples R China
3.Jiangsu Acad Agr Sci, Dept Funct Food & Bioact Cpds, Inst Agrofood Proc, Nanjing 210014, Jiangsu, Peoples R China
关键词： Magnetic microsphere; Polyphenol extraction; Tannic acid; Hydrogen bonding; Polymerization; Solid Phase extraction
期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）
ISSN： 0308-8146
年卷期： 2019 年 283 卷
页码：
收录情况： SCI
摘要： In this study, a novel core-shell structured Fe3O4@TA@P(NVP-co-NIPAM) magnetic microsphere has been successfully developed for polyphenol extraction employing tannic acid (TA) directed copolymerization. The TA directing strategy guided copolymerization preferentially on the surface of the magnetic core and facilitated formation of the shell for coating the magnetic core. It was unveiled that the amount of TA, the ratio of the two monomers, and the amount of surfactant were critical for the preparation of the magnetic microspheres. The identity and proportion of the shell were analyzed by FT-IR and TGA. Magnetic hysteresis loop measurement confirmed the superparamagnetic nature and no loss of magnetization after coating. The prepared magnetic microspheres demonstrated outstanding absorption ability to typical polyphenols. Kinetic studies suggested that the adsorption behavior followed Langmuir absorption model. The developed magnetic microspheres should be useful for biological studies. The TA directing strategy would be valuable for synthesis of core-shell structured particles.
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