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基于深共晶溶剂固载磁性二硫化钼分子印迹聚合物的绿茶中儿茶素的固相萃取。

Solid-Phase Extraction of Catechins from Green Tea with Deep Eutectic Solvent Immobilized Magnetic Molybdenum Disulfide Molecularly Imprinted Polymer.

机构信息

Department of Chemistry and Chemical Engineering, Inha University, Incheon 402-701, Korea.

出版信息

Molecules. 2020 Jan 9;25(2):280. doi: 10.3390/molecules25020280.

DOI:10.3390/molecules25020280
PMID:31936680
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7024266/
Abstract

A type of molecular-imprinted polymer with magnetic molybdenum disulfide as a base and deep eutectic solvent as a functional monomer (FeO@MoS@DES-MIP) was prepared with surface molecular imprinting method. It was applied as the adsorbent for the selective recognition and separation of (+)-catechin, (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechin gallate, and (-)-epigallocatechin gallate in green tea in the process of magnetic solid-phase extraction (MSPE) combined with high-performance liquid chromatography (HPLC). The structure of FeO@MoS@DES-MIP was characterized by Fourier transform infrared spectroscopy and field emission scanning electron microscopy. The adsorption properties and selective recognition ability on (-)-epigallocatechin gallate and the other four structural analogues were examined and compared. The results show that the polymer has excellent selective recognition ability for (-)-epigallocatechin gallate, and its adsorption capacity was much higher than that of structural analogues. The FeO@MoS@DES-MIP not only has the special recognition ability to template a molecule, but also can be separated by magnets with high separation efficiency and can be used in MSPE.

摘要

一种以磁性二硫化钼为基体、深共晶溶剂为功能单体的分子印迹聚合物（FeO@MoS@DES-MIP），采用表面分子印迹法制备。它被用作吸附剂，用于高效液相色谱（HPLC）结合磁固相萃取（MSPE）过程中绿茶中（+）-儿茶素、（-）-表儿茶素、（-）-表没食子儿茶素、（-）-表儿茶素没食子酸酯和（-）-表没食子儿茶素没食子酸酯的选择性识别和分离。采用傅里叶变换红外光谱和场发射扫描电子显微镜对 FeO@MoS@DES-MIP 的结构进行了表征。考察并比较了其对（-）-表没食子儿茶素没食子酸酯和其他四种结构类似物的吸附性能和选择性识别能力。结果表明，该聚合物对（-）-表没食子儿茶素没食子酸酯具有优异的选择性识别能力，其吸附容量明显高于结构类似物。FeO@MoS@DES-MIP 不仅对模板分子具有特殊的识别能力，而且可以通过磁铁进行高效分离，可用于 MSPE。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/cedea4a6265a/molecules-25-00280-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/d6e0aa3732cf/molecules-25-00280-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/33e084df88bd/molecules-25-00280-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/aca8f9174dbf/molecules-25-00280-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/29345bdf0027/molecules-25-00280-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/26036396a468/molecules-25-00280-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/312d2c730aa9/molecules-25-00280-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/cedea4a6265a/molecules-25-00280-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/d6e0aa3732cf/molecules-25-00280-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/33e084df88bd/molecules-25-00280-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/aca8f9174dbf/molecules-25-00280-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/29345bdf0027/molecules-25-00280-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/26036396a468/molecules-25-00280-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/312d2c730aa9/molecules-25-00280-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c065/7024266/cedea4a6265a/molecules-25-00280-g007.jpg

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