Magnetic molecularly imprinted polymers doped with graphene oxide for the selective recognition and extraction of four flavonoids from Rhododendron species
文献类型： 外文期刊
作者： Ma, Xingbin 1 ; Lin, Hongling 2 ; He, Yahui 1 ; She, Yongxin 1 ; Wang, Miao 1 ; Abd El-Aty, A. M. 5 ; Afifi, Nehal A.; 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Qual Stand & Testing Technol Agriprod, Beijing 100081, Peoples R China
2.Chinese Acad Trop Sci, Zhanjiang Expt Stn, Zhanjiang 524013, Peoples R China
3.Tibet Acad Agr & Anim Husb Sci, Inst Vet & Anim Husb, Prod Qual Stand & Testing Res, Lhasa 850006, Peoples R China
4.Chinese Acad Agr Sci, Lanzhou Inst Anim Sci & Vet Pharmaceut, Lanzhou 730050, Gansu, Peoples R China
5.Cairo Univ, Dept Pharmacol, Fac Vet Med, Giza 12211, Egypt
6.Ataturk Univ, Med Fac, Dept Med Pharmacol, TR-25240 Erzurum, Turkey
关键词： Farrerol; Magnetic extraction and purification; Graphene oxide; Surface molecular imprinting
期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.759； 五年影响因子：4.302 ）
ISSN： 0021-9673
年卷期： 2019 年 1598 卷
页码：
收录情况： SCI
摘要： Herein, a novel magnetic molecularly imprinted polymer doped with reticular graphene oxide (Fe3O4@SiO2-GO@MIPs) was synthesized for the selective recognition and extraction of 4 flavonoids (farrerol, taxifolin, kaempferol, and hyperin) from Rhododendrons species. The Fe3O4@SiO2-GO@MIPs with lamellar membranes showed outstanding adsorption capacity. The 3D cavities complementary to the "shape" of farrerol were "imprinted" on the polymer framework after removal of farrerol template. Competitive binding assays showed that the polymer has a higher selectivity for farrerol compared with other analogues and references. The Fe3O4@SiO2-GO@MIPs as solid-phase extraction adsorbents combined with liquid chromatography-tandem quadrupole mass spectrometry (LC-MS/MS) was used for selective determination of four flavonoids from Rhododendrons samples. The limits of detection (LOD) were 0.07, 0.08, 0.06, and 0.08 mu g L-1 for farrerol, taxifolin, kaempferol, and hyperin, respectively. These results suggest that the prepared Fe3O4@SiO2-GO@MIPs have the potential applicability to extract, purify, and enrich flavonoids from herbs, supplements, and other natural products. (C) 2019 Elsevier B.V. All rights reserved.
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