An edible molecularly imprinted material prepared by a new environmentally friendly deep eutectic solvent for removing oxalic acid from vegetables and human blood
An edible molecularly imprinted material prepared by a new environmentally friendly deep eutectic solvent for removing oxalic acid from vegetables and human blood
复制标题
DOI：
10.1007/s00216-022-03889-9
复制
发表时间：
2022-01
影响因子：
4.3
通讯作者：
Yan-Jun Li;Jia-Yuan He;Qing-Yao Li;Li-Li Yang-Li;Ronghui Ma;Chong-Zhi Wang;Lian-di Zhou;Qihui Zhang
中科院分区：
文献类型：
--
作者：
Yan-Jun Li;Jia-Yuan He;Qing-Yao Li;Li-Li Yang-Li;Ronghui Ma;Chong-Zhi Wang;Lian-di Zhou;Qihui Zhang
以甜菜碱、柠檬酸和甘油组成的低共熔溶剂为功能单体，制备了一种新型的低共熔溶剂--磁性分子印迹聚合物（DES-MMIP），用于特异性去除草酸（OA）。采用X射线衍射、扫描电镜、透射电镜、热重分析、傅里叶变换红外光谱、振动样品磁强计等手段对DES-MMIPs的结构和形貌进行了研究。DES-MMIPs具有以磁性氧化铁为核的核-壳结构，热稳定性好，对OA的吸附容量高达18.73 mg/g。DES-MMIPs对OA的吸附符合准二级动力学模型和Langmuir吸附等温式。DES-MMIPs对OA具有明显的选择性，印迹因子为3.26。当应用于真实的样品时，高效液相色谱分析表明，DES-MMIPs可以去除菠菜和血清中的OA。这些发现为从蔬菜中去除OA和在肾透析中特异性去除OA提供了潜在的方法。
A novel deep eutectic solvent-magnetic molecularly imprinted polymer (DES-MMIP) for the specific removal of oxalic acid (OA) was prepared by an environmentally friendly deep eutectic solvent, consisting of betaine, citric acid, and glycerol, which acted as the functional monomer for polymerization. The structure and morphology of DES-MMIPs were studied by X-ray diffraction, scanning and transmission electron microscopy, thermal gravimetric analysis, Fourier transform infrared spectroscopy, and vibrating sample magnetometer. DES-MMIPs had a core–shell structure, with magnetic iron oxide as the core, and showed good thermal stability and high adsorption capacity (18.73 mg/g) for OA. The adsorption process of OA by DES-MMIPs followed the pseudo-second-order kinetic model and Langmuir isotherm model. DES-MMIPs had significant selectivity for OA and their imprinting factor was 3.26. When applied to real samples, high performance liquid chromatography analysis showed that DES-MMIPs could remove OA from both spinach and blood serum. These findings provide potential methods for removal of OA from vegetables and for specific removal of OA in renal dialysis.Graphical abstract