title: Preparation of molecularly imprinted polymers based on magnetic nanoparticles for the selective extraction of protocatechuic acid from plant extracts.
abstract: In this study, highly selective core-shell molecularly imprinted polymers on the surface of magnetic nanoparticles were prepared using protocatechuic acid as the template molecule. The resulting magnetic molecularly imprinted polymers were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and vibrating sample magnetometry. The binding performances of the prepared materials were evaluated by static and selective adsorption. The binding isotherms were obtained for protocatechuic acid and fitted by the Langmuir isotherm model and Freundlich isotherm model. Furthermore, the resulting materials were used as the solid-phase extraction materials coupled to high-performance liquid chromatography for the selective extraction and detection of protocatechuic acid from the extracts of Homalomena occulta and Cynomorium songaricum with the recoveries in the range 86.3-102.2%.
authors: School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
authors: Xiaoyu
authors: X
authors: Xie
authors: Fen
authors: F
authors: Wei
authors: Liang
authors: L
authors: Chen
authors: Sicen
authors: S
authors: Wang
mesh_terms: D029064:Araceae / Q000737:chemistry*; D031482:Cynomorium / Q000737:chemistry*; D062385:Hydroxybenzoates / Q000302:isolation & purification*; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D054802:Molecular Imprinting; D010936:Plant Extracts / Q000302:isolation & purification*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*
chemical_list: D062385:Hydroxybenzoates; D058185:Magnetite Nanoparticles; D010936:Plant Extracts; D011108:Polymers; C009091:protocatechuic acid
keywords: Magnetic molecularly imprinted polymers; Plant extracts; Protocatechuic acid; Solid-phase extraction