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Cheng L, Guo Z, Lin Y, Wei X, Zhao K, Yang Z. Bovine Serum Albumin Molecularly Imprinted Electrochemical Sensors Modified by Carboxylated Multi-Walled Carbon Nanotubes/CaAlg Hydrogels. Gels 2023; 9:673. [PMID: 37623128 PMCID: PMC10454541 DOI: 10.3390/gels9080673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
In this paper, sodium alginate (NaAlg) was used as functional monomers, bovine serum albumin (BSA) was used as template molecules, and calcium chloride (CaCl2) aqueous solution was used as a cross-linking agent to prepare BSA molecularly imprinted carboxylated multi-wall carbon nanotubes (CMWCNT)/CaAlg hydrogel films (MIPs) and non-imprinted hydrogel films (NIPs). The adsorption capacity of the MIP film for BSA was 27.23 mg/g and the imprinting efficiency was 2.73. The MIP and NIP hydrogel film were loaded on the surface of the printed electrode, and electrochemical performance tests were carried out by electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV) using the electrochemical workstation. The loaded MIP film and NIP film effectively improved the electrochemical signal of the bare carbon electrode. When the pH value of the Tris HCl elution solution was 7.4, the elution time was 15 min and the adsorption time was 15 min, and the peak currents of MIP-modified electrodes and NIP-modified electrodes reached their maximum values. There was a specific interaction between MIP-modified electrodes and BSA, exhibiting specific recognition for BSA. In addition, the MIP-modified electrodes had good anti-interference, reusability, stability, and reproducibility. The detection limit (LOD) was 5.6 × 10-6 mg mL-1.
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Affiliation(s)
- Letian Cheng
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (L.C.); (Z.G.); (Y.L.); (X.W.)
| | - Zhilong Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (L.C.); (Z.G.); (Y.L.); (X.W.)
| | - Yuansheng Lin
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (L.C.); (Z.G.); (Y.L.); (X.W.)
| | - Xiujuan Wei
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (L.C.); (Z.G.); (Y.L.); (X.W.)
| | - Kongyin Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, China; (L.C.); (Z.G.); (Y.L.); (X.W.)
| | - Zhengchun Yang
- Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology, Tianjin 300384, China;
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Zhang L, Feng Z, Fu M, Huang R, Chen W. Facile synthesis of flower-like sandwich-structured molecularly imprinted polymers for efficient recognition of target protein from egg white. Food Chem 2023; 421:136165. [PMID: 37094399 DOI: 10.1016/j.foodchem.2023.136165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/31/2023] [Accepted: 04/12/2023] [Indexed: 04/26/2023]
Abstract
In this work, a facile method for synthesis of flower-like sandwich-structured molecularly imprinted polymers (NiO@PDA/MIPs) was proposed for protein recognition. Polydopamine modified flower-like NiO was used as substrate to immobilize the target protein (ovalbumin, OVA), and dopamine was utilized as functional monomer to form the imprinted layer. The whole preparation process was conducted in aqueous solution at room temperature. The key preparation conditions were studied systematically. Owing to the large surface-to-volume of the flower-like structure and the multifunctional groups on the polydopamine layer, the NiO@PDA/MIPs showed large binding capacity (143.2 mg/g), efficient adsorption kinetics (60 min) and excellent selectivity toward OVA. Meanwhile, the NiO@PDA/MIPs possessed satisfactory stability and reusability. Finally, successful capture of OVA from egg white suggested its potential value in practical applications.
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Affiliation(s)
- Lirui Zhang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Zhenzhen Feng
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Min Fu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Renhe Huang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Wei Chen
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China.
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Yan M, Jiang F, Fei H, Ma F, Yan J, Wu Y. Polydopamine-based multilevel molecularly imprinted nanocomposite membranes comprising metal organic frameworks for selective recognition and separation. J Colloid Interface Sci 2022; 606:696-708. [PMID: 34416459 DOI: 10.1016/j.jcis.2021.08.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/07/2021] [Accepted: 08/09/2021] [Indexed: 12/17/2022]
Abstract
Molecularly imprinted nanocomposite membranes with three-dimensional metal-organic frameworks (MOFs)-based structure (MINMs-TM) were successfully prepared by using propranolol as template molecule. Importantly, for the first time, polycarbonate track etch membranes had been used as the supporting surfaces to construct the polydopamine (PDA)-induced MOFs composite structure, in which the as-prepared PDA-modified surface would promote the crystallization and nucleation of ZIF-8-based composite layer. Based on the entire preparation processes of our design, the as-prepared PDA-induced ZIF-8-modified surfaces could be regarded as the imprinted-initiated units of sol-gel imprinting polymerization. Abundant recognition sits of propranolol were achieved in MINMs-TM, which showed characteristic properties of permeability and selectivity. Therefore, high adsorption capacity (41.31 mg/g) and fast adsorption equilibrium rate (within 30 min) had been successfully achieved. Meanwhile, excellent permselectivity rates (β) of MINMs-TM toward propranolol were also obtained as 5.04, 4.79 and 5.14, which MINMs-TM the successful synthesis of high-affinity and high-density propranolol-imprinted sites. Overall, for the practical selective separation and scalability, we had successfully MINMs-TM the preparation of MINMs-TM-based to selective rebinding and separation of propranolol from complex solution system and mimetic water sample, which had further confirmed the desired and potential applications of many environmental pollutants.
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Affiliation(s)
- Ming Yan
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Fan Jiang
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hangtao Fei
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Faguang Ma
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jing Yan
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yilin Wu
- Institute of Green Chemistry and Chemical Technology, Advanced Chemical Engineering Laboratory of Green Materials and Energy of Jiangsu Province, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.
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Guo B, Tong Y, Sun B, Zhang B, Chen X, Bi S, Tian M. Metal oxide-based macroporous ordered double affinity molecularly imprinted polymer for specific separation and enrichment of glycoprotein from food samples: a co-modification of DMSA and boronate affinity. Mikrochim Acta 2022; 189:43. [PMID: 34978614 DOI: 10.1007/s00604-021-05155-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/19/2021] [Indexed: 02/06/2023]
Abstract
Metal oxide-based macroporous ordered double affinity molecularly imprinted polymers (D-MIPs) were developed as solid phase extraction (SPE) adsorbents for the specific identification of ovalbumin (OVA) under physiological pH conditions prior to ultraviolet visible (UV-vis) spectrophotometric detection. Herein, macroporous alumina (MA) was used as a matrix; dimercaptosuccinic acid (DMSA) and 3-aminophenylboric acid (APBA) were employed as dual-functional monomers; APBA is a self-polymerizing monomer. The effects of synthesis conditions, SPE conditions as well as selectivity, reproducibility, and reusability were studied. The co-modification of DMSA and boronate affinity renders the adsorbent exhibiting a high adsorption capacity (114.4 mg g-1) and short equilibrium time (30 min). The surface imprinting technology causes the adsorbent to have high selectivity towards OVA. The OVA recovery range is 91.1-99.6%. This study provides a promising method for the enrichment of OVA and other cis-diol-containing analytes in complex biological samples. A novel metal oxide-based macroporous ordered nanoparticle with a combination of DMSA and boronate affinity was successfully prepared for specific separation and enrichment of glycoprotein from complex biological samples.
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Affiliation(s)
- Bailin Guo
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China
| | - Yukui Tong
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China
| | - Baodong Sun
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, 150025, China
| | - Baoyue Zhang
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China
| | - Xue Chen
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China
| | - Sheng Bi
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China
| | - Miaomiao Tian
- Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin, 150025, China.
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Improved detection and recognition of glycoproteins using fluorescent polymers with a molecular imprint based on glycopeptides. Mikrochim Acta 2021; 188:439. [PMID: 34845528 DOI: 10.1007/s00604-021-05099-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 11/09/2021] [Indexed: 12/22/2022]
Abstract
Highly specific novel glycopeptide-based fluorescent molecularly imprinting polymers (g-FMIPs) were constructed to recognize and determine the target glycoprotein in complex biological samples. The glycopeptide of ovalbumin (OVA), with the unique structural characteristics of glycan and peptide, and potential application in improving the specificity recognition of g-FMIPs, was selected as the template molecule. The nitrogen-doped graphene quantum dots (N-GQDs) were introduced for fluorescence response. The obtained g-FMIPs possessed rapid binding kinetics and high adsorption capacity. Notably, the g-FMIPs exhibited remarkable selectivity and sensitivity with a high imprinting factor of 6.57, good linearity of 0.625 - 5.00 μM, and limit of detection of 0.208 μM. After treatment with g-FMIPs, the concentration of OVA in eluted solution was 1.07 μM. The obtained recoveries at 1.43 μM, 2.86 μM, and 4.29 μM spiked concentrations were 97.2%, 93.5%, and 101%, respectively, and the relative standard deviations were 2.6%, 4.2%, and 1.1%, respectively. In summary, the proposed strategy will expand the MIPs construction method and its application prospects in precision recognition and sensitive detection of trace glycoproteins from complex biosamples.
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Guo B, Bi S, Zhang B, Tong Y, Chen X, Tian M. Synthesis of nanoparticles with a combination of metal chelation and molecular imprinting for efficient and selective extraction of glycoprotein. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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