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Magnetic molecularly imprinted polymer for the selective extraction of hesperetin from the dried pericarp of Citrus reticulata Blanco
Talanta ( IF 6.1 ) Pub Date : 2018-03-09 , DOI: 10.1016/j.talanta.2018.03.010
Dan-Dan Wang , Die Gao , Wan-Jun Xu , Fan Li , Man-Ni Yin , Qi-Feng Fu , Zhi-Ning Xia

In present study, novel magnetic molecularly imprinted polymers for hesperetin were successfully prepared by surface molecular imprinting method using functionalized Fe3O4 particles as the magnetic cores. Hesperetin as the template, N-Isopropylacrylamide as the functional monomer, ethylene glycol dimethyl acrylate as the crosslinker, 2,2-azobisisobutyonnitrile as initiator and acetonitrile-methanol (3:1, v/v) as the porogen were applied in the preparation process. Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscope, x-ray diffraction and vibrating sample magnetometry were applied to characterize the magnetic molecularly imprinted polymers. The adsorption experiments indicated that the magnetic molecularly imprinted polymers performed high selective recognition property to hesperetin. The selectivity experiment indicated that the adsorption capacity and selectivity of polymers to hesperetin was higher than that of luteolin, baicalein and ombuin. Furthermore, the magnetic molecularly imprinted polymers were employed as adsorbents for extraction and enrichment of hesperetin from the dried pericarp of Citrus reticulata Blanco. The recoveries of hesperetin in the dried pericarp of Citrus reticulata Blanco ranged from 90.5% to 96.9%. The linear range of 0.15–110.72 µg/mL was obtained with correlation coefficient of greater than 0.9991. The limit of detection and quantification of the proposed method was 0.06 µg/mL and 0.15 µg/mL, respectively. Based on three replicate measurements, intra-day RSD was 0.71% and inter-day RSD was 2.31%. These results demonstrated that the prepared magnetic molecularly imprinted polymers were proven to be an effective material for the selective adsorption and enrichment of hesperetin from natural medicines, fruits and et al.



中文翻译:

磁性分子印迹聚合物,用于从柑桔干的果皮中选择性提取橙皮素

本研究通过功能化的Fe 3 O 4表面分子印迹法成功制备了橙皮素的新型磁性分子印迹聚合物。粒子作为磁芯。在制备过程中,以橙皮素为模板,以N-异丙基丙烯酰胺为功能单体,以乙二醇二甲基丙烯酸甲酯为交联剂,以2,2-偶氮二异丁腈为引发剂,以乙腈-甲醇(3:1,v / v)为成孔剂。 。傅里叶变换红外光谱,扫描电子显微镜,透射电子显微镜,X射线衍射和振动样品磁法被用来表征磁性分子印迹聚合物。吸附实验表明,磁性分子印迹聚合物对橙皮素具有较高的选择性识别性能。选择性实验表明,聚合物对橙皮素的吸附能力和选择性高于木犀草素,黄ical素和ombuin。此外,柑桔柑桔干果皮中橙皮素的回收率为90.5%至96.9%。线性范围为0.15–110.72 µg / mL,相关系数大于0.9991。该方法的检出限和定量限分别为0.06 µg / mL和0.15 µg / mL。根据三个重复的测量,日内RSD为0.71%,日间RSD为2.31%。这些结果表明,所制备的磁性分子印迹聚合物被证明是从天然药物,水果等中选择性吸附和富集橙皮素的有效材料。

更新日期:2018-03-09
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