Preparation, recognition characteristics and properties for quercetin molecularly imprinted polymers

Yu, Lanzhe; Ye, Yun; Zhang, Weijun; Wang, Lihua

doi:10.5004/dwt.2011.2863

Cited by 10 publications

(6 citation statements)

References 14 publications

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“…The fundamental reason for the difference in adsorption capacity between static and dynamic tests is whether the adsorbate can effectively overcome the mass transfer resistance of the liquid film on the surface of adsorbent to reach the same adsorption equilibrium in a certain time. AM was also widely used as a functional monomer to prepare KA‐MIPs and QU‐MIPs 23,26,28 . Although MAA was used to prepare KA‐MIPs and QU‐MIPs in other work, the present work showed that MAA was not suitable for KA‐MIPs.…”

Section: Resultsmentioning

confidence: 59%

Kaempferol molecularly imprinted polymers: preparation, characterization and application to the separation of kaempferol from ginkgo leaves

Liang

et al. 2023

Polymer International

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In this work, kaempferol molecularly imprinted polymers (MIPs) were screened in detail and were applied to the separation of kaempferol from real complex systems. Kaempferol‐MIPs with high affinity and selectivity for kaempferol could be prepared successfully by using kaempferol as the template molecule, 4‐vinylpyridine as the functional monomer, ethylene glycol dimethacrylate or divinylbenzene as the crosslinker, acetone or acetonitrile as the solvent. Scanning electron microscopy observation and Brunauer–Emmett–Teller measurement showed that the prepared MIPs had a heterogeneous pore structure and large specific surface area. Static and dynamic adsorption experiments and solid‐phase extraction application were performed to evaluate the performance of the prepared MIPs. Only the MIPs with both higher distribution coefficient and higher imprinting factor in the dynamic experiments had better ability to retain kaempferol. Using the screened MIPs as solid‐phase extraction sorbents, kaempferol and quercetin were extracted directly from the crude ginkgo leaves hydrolysate with high recovery and purity. Control experiments also showed that the screened MIPs were superior to commercially available adsorbents in terms of the separation of kaempferol from crude extracts. © 2023 Society of Industrial Chemistry.

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Section: Resultsmentioning

confidence: 59%

Kaempferol molecularly imprinted polymers: preparation, characterization and application to the separation of kaempferol from ginkgo leaves

Liang

et al. 2023

Polymer International

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“…The four -OH groups participate in the formation of bonds in the polymer cavities. Isotherms of quercetin adsorption for such a system have been presented by Yu et al [14]. As reported, the adsorption capacity increased from 267 to 1080 ng/g when the initial concentration of quercetin was increased from 2 to 14 mg/L.…”

Section: Resultsmentioning

confidence: 91%

“…The analyte-monomer complex is then subjected to polymerization initiated by temperature or irradiation (thermal or photoinitiation) during which in the presence of a cross-linking agent, a three-dimensional polymer structure is formed. At the subsequent stage, the template is removed from the polymer structure obtained, leaving empty cavities capable of binding the template molecules as they are complementary to these template molecules in size, shape and functional group positions [12,13,14]. The final properties of polymer scavengers depend on a number of parameters, including the types of monomers chosen, type of their interactions with the template, quantitative ratio of the monomer to the template, conditions of polymerization and the way of removing the template from the polymer ( Soxhlet extraction, dialysis, thermal desorption ).…”

Section: Introductionmentioning

confidence: 99%

Application of Molecularly Imprinted Polymers (MIP) and Magnetic Molecularly Imprinted Polymers (mag-MIP) to Selective Analysis of Quercetin in Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (FAPA-MS) and in Electrospray Ionization Mass Spectrometry (ESI-MS)

Guć

Schroeder

2019

Molecules

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Molecularly imprinted polymer (MIP) and magnetic molecularly imprinted polymer (mag-MIP) for solid extraction and pre-concentration of quercetin have been successfully prepared by thermal polymerization method using quercetin (Q) as a template, acrylamide (AA) as a functional monomer, and ethylene glycol dimethacrylate (EGDMA) as a cross-linking agent. The MIP and mag-MIP were successfully applied in analysis of quercetin by mass spectrometry (MS) methods. To perform ambient plasma ionization experiments, a setup consisting of the heated crucible, a flowing atmospheric-pressure afterglow (FAPA) plasma ion source, and amaZon SL ion trap (Bruker, Bremen, Germany) was used. The heated crucible with programmable temperature allowed desorption of the analytes from MIPs structure which resulted in their direct introduction into the ion stream. The results of Q-MIP/Q-mag-MIP and FAPA-MS measurements were compared with those of the analysis of quercetin by the ESI-MS method without extractions and pre-concentration of analytes on polymers. Limits of detection (LOD) for quercetin solutions in both positive and negative ESI-MS were established at 10−8 M and 10−7 M, respectively. The linearity (R2 = 0.9999) of the proposed analytical procedure for quercetin determination in positive ions was provided in the range between 10−4 M and 10−7 M. Moreover, the same parameters were established for FAPA-MS in positive ions, reaching LOD at 0.005 mg/gMIP and the linearity of the method in the range of 0.015–0.075 mg/gMIP with the correlation coefficient value R2 = 0.9850.

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“…During polymerization, two types of binding sites are formed: the first is a complete interaction between the functional monomer and the template, which is supposed to be a specific binding site of the MIP, and the second is a free functional monomer in the polymer matrix that causes non-specific binding [67]. In contrast to MIPs, a Scatchard plot derived from NIPs (Supplementary Figure S5) providing a small correlation derived from the NIP equation indicates that cotinine can be adsorbed on the surface of control polymers by nonselective interaction, including van der Waals force, although NIPs do not contain imprinting sites [68].…”

Section: Resultsmentioning

confidence: 99%

Exploring Matrix Effects on Binding Properties and Characterization of Cotinine Molecularly Imprinted Polymer on Paper-Based Scaffold

et al. 2019

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Commercially available sorbent materials for solid-phase extraction are widely used in analytical laboratories. However, non-selective binding is a major obstacle for sample analysis. To overcome this problem, molecularly imprinted polymers (MIPs) were used as selective adsorbent materials prior to determining target analysts. In this study, the use of non-covalent molecularly imprinted polymers (MIPs) for cotinine adsorption on a paper-based scaffold was studied. Fiberglass paper was used as a paper scaffold for cotinine-selective MIP adsorption with the use of 0.5% agarose gel. The effects of salt, pH, sample matrix, and solvent on the cotinine adsorption and extraction process were investigated. Under optimal conditions, the adsorption isotherm of synthesized MIPs increased to 125.41 µg/g, whereas the maximum adsorption isotherm of non-imprinted polymers (NIPs) was stable at 42.86 µg/g. The ability of the MIP paper scaffold to absorb cotinine in water medium was approximately 1.8–2.8-fold higher than that of the NIP scaffold. From Scatchard analysis, two dissociation constants of MIPs were calculated to be 2.56 and 27.03 µM. Nicotine, myosmine, and N-nitrosonornicotine were used for selectivity testing, and the calculated selectivity factor of cotinine to nicotine, myosmine, and N-nitrosonornicotine was 1.56, 2.69, and 2.05, respectively. Overall, the MIP paper scaffold is promising for simple onsite sampling of cotinine and can be used to assess tobacco smoke exposure.

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Preparation, recognition characteristics and properties for quercetin molecularly imprinted polymers

Cited by 10 publications

References 14 publications

Kaempferol molecularly imprinted polymers: preparation, characterization and application to the separation of kaempferol from ginkgo leaves

Kaempferol molecularly imprinted polymers: preparation, characterization and application to the separation of kaempferol from ginkgo leaves

Application of Molecularly Imprinted Polymers (MIP) and Magnetic Molecularly Imprinted Polymers (mag-MIP) to Selective Analysis of Quercetin in Flowing Atmospheric-Pressure Afterglow Mass Spectrometry (FAPA-MS) and in Electrospray Ionization Mass Spectrometry (ESI-MS)

Exploring Matrix Effects on Binding Properties and Characterization of Cotinine Molecularly Imprinted Polymer on Paper-Based Scaffold

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