2021年1月
Poly(ethylene glycol) Hydrogels with a Boronic Acid Monomer via Molecular Imprinting for Selective Removal of Quinic Acid Gamma-Lactone in Coffee
ACS APPLIED POLYMER MATERIALS
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- 巻
- 3
- 号
- 1
- 開始ページ
- 226
- 終了ページ
- 232
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acsapm.0c01062
- 出版者・発行元
- AMER CHEMICAL SOC
We developed molecularly imprinted polymers (MIPs) with a poly(ethylene glycol) (PEG)-based cross-linker and boronic acids in functional monomers, which selectively form a complex with a diol structure for selective removal of lactones from a coffee beverage. We synthesized a boronic acid monomer, 1-allylpyridinium-3-boronic acid, which has lower pK(a) and stronger binding strength to saccharides than commonly used boronic acids. Then, we prepared the MIPs with the monomer and succeeded in selective adsorption for a type of lactones, quinic acid gamma-lactone (QAGL). Furthermore, the high hydrophilicity of PEG and the molecular imprinting effect prevented an un-specific adsorption of other components in coffee. Finally, we achieved in removal of QAGL in coffee with high yield and at high speed by using the MIP-based microsphere as a separation medium in solid-phase extraction. This study provides a simple method for better-tasting freshly brewed coffee.
- リンク情報
- ID情報
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- DOI : 10.1021/acsapm.0c01062
- ISSN : 2637-6105
- Web of Science ID : WOS:000609249200025