title: Rhein functionalized magnetic chitosan as a selective solid phase extraction for determination isoflavones in soymilk.
abstract: A new solid-phase extraction mode was developed for separation some flavones from the complex interference system. In the experiment, rhein anchored on magnetic chitosan microparticles, prepared facilely without removal of the template molecule, was used as sorbents for the extraction of target analytes; after completion of the extraction process, Fe3O4particles acted as carrier to retrieve rhein functionalized magnetic chitosan microparticles (RMCMPs) from the sample solution. RMCMPs showed excellent selective adsorption capacity of isoflavones. The result suggested that the method was useful for fast determination and quantification of isoflavones in soymilk. The RMCMPs were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Fourier transforms infrared spectrometer (FTIR).
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China. Electronic address: tggh635@163.com.
authors.forename: Hui
authors.initials: H
authors.lastname: Guo
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Xue
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Shen
authors.initials: S
authors.lastname: Yao
authors.affiliation: Research Center for Karst Wetland Ecology, Guizhou Minzhu University, Guiyang 550025, PR China.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Cai
authors.affiliation: College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, PR China.
authors.forename: Junqing
authors.initials: J
authors.lastname: Qian
mesh_terms: D000327:Adsorption; D000880:Anthraquinones / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D007529:Isoflavones / Q000032:analysis*; D008280:Magnetics; D052616:Solid Phase Extraction; D041942:Soy Milk / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D000880:Anthraquinones; D007529:Isoflavones; D048271:Chitosan; C020491:rhein
keywords: Adsorption; Chitosan; Isoflavones; Magnetic chitosan microparticles; Solid phase extraction