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Cho CH, Kim JH, Padalkar NS, Reddy YVM, Park TJ, Park J, Park JP. Nanozyme-assisted molecularly imprinted polymer-based indirect competitive ELISA for the detection of marine biotoxin. Biosens Bioelectron 2024; 255:116269. [PMID: 38579624 DOI: 10.1016/j.bios.2024.116269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/21/2024] [Accepted: 04/01/2024] [Indexed: 04/07/2024]
Abstract
Saxitoxin (STX), which is produced by certain dinoflagellate species, is a type of paralytic shellfish poisoning toxin that poses a serious threat to human health and the environment. Therefore, developing a technology for the convenient and cost-effective detection of STX is imperative. In this study, we developed an affinity peptide-imprinted polymer-based indirect competitive ELISA (ic-ELISA) without using enzyme-toxin conjugates. AuNP/Co3O4@Mg/Al cLDH was synthesized by calcining AuNP/ZIF-67@Mg/Al LDH, which was obtained by combining AuNPs, ZIF-67, and flower-like Mg/Al LDH. This synthesized nanozyme exhibited high catalytic activity (Km = 0.24 mM for TMB and 132.5 mM for H2O2). The affinity peptide-imprinted polymer (MIP) was imprinted with an STX-specific template peptide (STX MIP) on a multi-well microplate and then reacted with an STX-specific signal peptide (STX SP). The interaction between the STX SP and MIP was detected using a streptavidin-coated nanozyme (SA-AuNP/Co3O4@Mg/Al cLDH). The developed MIP-based ic-ELISA exhibited excellent selectivity and sensitivity, with a limit of detection of 3.17 ng/mL (equivalent: 0.317 μg/g). Furthermore, the system was validated using a commercial ELISA kit and mussel tissue samples, and it demonstrated a high STX recovery with a low coefficient of variation. These results imply that the developed ic-ELISA can be used to detect STX in real samples.
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Affiliation(s)
- Chae Hwan Cho
- Department of Food Science and Technology, GreenTech-Based Food Safety Research Group (BK21 Four), Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Ji Hong Kim
- Department of Food Science and Technology, GreenTech-Based Food Safety Research Group (BK21 Four), Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Navnath S Padalkar
- Department of Food Science and Technology, GreenTech-Based Food Safety Research Group (BK21 Four), Chung-Ang University, Anseong, 17546, Republic of Korea
| | - Y Veera Manohara Reddy
- Department of Chemistry, Sri Venkateswara College, University of Delhi, New Delhi, India
| | - Tae Jung Park
- Department of Chemistry, Institute of Interdisciplinary Convergence Research, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Jinyoung Park
- Department of Polymer Science & Engineering, Kyungpook National University, 80 Daehak-ro, Daegu, 41566, Republic of Korea
| | - Jong Pil Park
- Department of Food Science and Technology, GreenTech-Based Food Safety Research Group (BK21 Four), Chung-Ang University, Anseong, 17546, Republic of Korea.
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Rong Q, Li Y, Luo J, Yan L, Jones KC, Zhang H. Development of a novel DGT passive sampler for measuring polycyclic aromatic hydrocarbons in aquatic systems. J Hazard Mater 2024; 470:134199. [PMID: 38593660 DOI: 10.1016/j.jhazmat.2024.134199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 03/22/2024] [Accepted: 03/31/2024] [Indexed: 04/11/2024]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are priority pollutants and need to be measured reliably in waters and other media, to understand their sources, fate, behaviour and to meet regulatory monitoring requirements. Conventional water sampling requires large water volumes, time-consuming pre-concentration and clean-up and is prone to analyte loss or contamination. Here, for the first time, we developed and validated a novel diffusive gradients in thin-films (DGT) passive sampler for PAHs. Based on the well-known DGT principles, the sampler pre-concentrates PAHs with typical deployment times of days/weeks, with minimal sample handling. For the first time, DGT holding devices made of metal and suitable for sampling hydrophobic organic compounds were designed and tested. They minimize sorption and sampling lag times. Following tests on different binding layer resins, a MIP-DGT was preferred - the first time applying MIP for PAHs. It samples PAHs independent of pH (3.9 -8.1), ionic strength (0.01 -0.5 M) and dissolved organic matter < 20 mg L-1, making it suitable for applications across a wide range of environments. Field trials in river water and wastewater demonstrated that DGT is a convenient and reliable tool for monitoring labile PAHs, readily achieving quantitative detection of environmental levels (sub-ng and ng/L range) when coupled with conventional GC-MS or HPLC. ENVIRONMENTAL IMPLICATIONS: PAHs are carcinogenic and genotoxic compounds. They are environmentally ubiquitous and must be monitored in waters and other media. This study successfully developed a new DGT passive sampler for reliable in situ time-integrated measurements of PAHs in waters at the ng/L level. This is the first time to use passive samplers for accurate measurements of hydrophobic organic contaminants in aquatic systems without calibration, a big step forward in monitoring PAHs. The application of this new sampler will enhance our understanding of the sources, fate, behavior and ecotoxicology of PAHs, enabling improved environmental risk assessment and management of these compounds.
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Affiliation(s)
- Qiuyu Rong
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Yanying Li
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian, Liaoning 116023, PR China
| | - Jun Luo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023 PR China
| | - Liying Yan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023 PR China
| | - Kevin C Jones
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
| | - Hao Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
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Drobysh M, Ratautaite V, Brazys E, Ramanaviciene A, Ramanavicius A. Molecularly imprinted composite-based biosensor for the determination of SARS-CoV-2 nucleocapsid protein. Biosens Bioelectron 2024; 251:116043. [PMID: 38368643 DOI: 10.1016/j.bios.2024.116043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/27/2023] [Accepted: 01/13/2024] [Indexed: 02/20/2024]
Abstract
This article aims to present a comparative study of three polypyrrole-based molecularly imprinted polymer (MIP) systems for the detection of the recombinant severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) nucleocapsid protein (rN). The rN is known for its relatively low propensity to mutate compared to other SARS-CoV-2 antigens. The aforementioned systems include screen-printed carbon electrodes (SPCE) modified with gold nanostructures (MIP1), platinum nanostructures (MIP2), and the unmodified SPCE (MIP3), which was used for control. Pulsed amperometric detection (PAD) was employed as the detection technique, offering the advantage of label-free detection without the need for an additional redox probe. Calibration curves were constructed using the obtained data to evaluate the response of each system. Non-imprinted systems were also tested in parallel to evaluate the contribution of non-specific binding and assess the affinity sensor's efficiency. The analysis of calibration curves revealed that the AuNS-based MIP1 system exhibited the lowest contribution of non-specific binding and displayed a better fit with the chosen fitting model compared to the other systems. Further analysis of this system included determining the limit of detection (LOD) (51.2 ± 2.8 pg/mL), the limit of quantification (LOQ) (153.9 ± 8.3 pg/mL), and a specificity test using a recombinant receptor-binding domain of SARS-CoV-2 spike protein as a control. Based on the results, the AuNS-based MIP1 system demonstrated high specificity and sensitivity for the label-free detection of SARS-CoV-2 nucleocapsid protein. The utilization of PAD without the need for additional redox probes makes this sensing system convenient and valuable for rapid and accurate virus detection.
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Affiliation(s)
- Maryia Drobysh
- Department of Nanotechnology, State Research Institute Center for Physical and Technological Sciences (FTMC), Sauletekio Ave. 3, Vilnius, LT-10257, Lithuania
| | - Vilma Ratautaite
- Department of Nanotechnology, State Research Institute Center for Physical and Technological Sciences (FTMC), Sauletekio Ave. 3, Vilnius, LT-10257, Lithuania
| | - Ernestas Brazys
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University (VU), Naugarduko Str. 24, 03225 Vilnius, LT-03225, Lithuania
| | - Almira Ramanaviciene
- NanoTechnas - Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University (VU), Naugarduko Str. 24, 03225 Vilnius, LT-03225, Lithuania
| | - Arunas Ramanavicius
- Department of Nanotechnology, State Research Institute Center for Physical and Technological Sciences (FTMC), Sauletekio Ave. 3, Vilnius, LT-10257, Lithuania; Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University (VU), Naugarduko Str. 24, 03225 Vilnius, LT-03225, Lithuania.
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Sarvutiene J, Prentice U, Ramanavicius S, Ramanavicius A. Molecular imprinting technology for biomedical applications. Biotechnol Adv 2024; 71:108318. [PMID: 38266935 DOI: 10.1016/j.biotechadv.2024.108318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 01/14/2024] [Accepted: 01/20/2024] [Indexed: 01/26/2024]
Abstract
Molecularly imprinted polymers (MIPs), a type of biomimetic material, have attracted considerable interest owing to their cost-effectiveness, good physiochemical stability, favourable specificity and selectivity for target analytes, and widely used for various biological applications. It was demonstrated that MIPs with significant selectivity towards protein-based targets could be applied in medicine, diagnostics, proteomics, environmental analysis, sensors, various in vivo and/or in vitro applications, drug delivery systems, etc. This review provides an overview of MIPs dedicated to biomedical applications and insights into perspectives on the application of MIPs in newly emerging areas of biotechnology. Many different protocols applied for the synthesis of MIPs are overviewed in this review. The templates used for molecular imprinting vary from the minor glycosylated glycan-based structures, amino acids, and proteins to whole bacteria, which are also overviewed in this review. Economic, environmental, rapid preparation, stability, and reproducibility have been highlighted as significant advantages of MIPs. Particularly, some specialized MIPs, in addition to molecular recognition properties, can have high catalytic activity, which in some cases could be compared with other bio-catalytic systems. Therefore, such MIPs belong to the class of so-called 'artificial enzymes'. The discussion provided in this manuscript furnishes a comparative analysis of different approaches developed, underlining their relative advantages and disadvantages highlighting trends and possible future directions of MIP technology.
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Affiliation(s)
- Julija Sarvutiene
- Department of Nanotechnology, Center for Physical Sciences and Technology (FTMC), Sauletekio av. 3, Vilnius, Lithuania
| | - Urte Prentice
- Department of Nanotechnology, Center for Physical Sciences and Technology (FTMC), Sauletekio av. 3, Vilnius, Lithuania
| | - Simonas Ramanavicius
- Department of Nanotechnology, Center for Physical Sciences and Technology (FTMC), Sauletekio av. 3, Vilnius, Lithuania
| | - Arunas Ramanavicius
- Department of Nanotechnology, Center for Physical Sciences and Technology (FTMC), Sauletekio av. 3, Vilnius, Lithuania.
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Yang D, Li X, Li X, Chen J, Zhang T, Lian T, Wang H. Design and synthesis of nano-iron oxyhydroxide-based molecularly imprinted electrochemical sensors for trace-level carbendazim detection in actual samples. Mikrochim Acta 2024; 191:163. [PMID: 38413431 DOI: 10.1007/s00604-024-06236-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/24/2024] [Indexed: 02/29/2024]
Abstract
Carbendazim (CBD) is widely used as a fungicide that acts as a pesticide in farming to prevent crop diseases. However, CBD can remain on crops for a long time. When consumed by humans and animals, it produces a range of toxic symptoms and poses a serious threat to their health. Therefore, the detection of CBD is necessary. Traditional assay strategies for CBD detection, although sensitive and practical, can hardly achieve fast, robust monitoring during food processing and daily life. Here, we designed a novel electrochemical sensor for CBD detection. In this method, iron oxyhydroxide nanomaterial (β-FeOOH) was first prepared by hydrothermal method. Then, a molecularly imprinted polymer (MIP) layer was electropolymerized on the surface using CBD as the template and resorcinol (RC) as the functional monomer. The synergistic interaction between β-FeOOH and MIP endows the MIP/β-FeOOH/CC-based electrochemical sensor with high specificity and sensitivity. Under optimal conditions, the MIP/β-FeOOH/CC-based sensor showed a wide linear range of 39 pM-80 nM for CBD and a detection limit as low as 25 pM. Therefore, the as-prepared sensor can be a practical and effective tool for pesticide residue detection.
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Affiliation(s)
- Dong Yang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China.
| | - Xuhua Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Xiangyu Li
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Jifan Chen
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Ting Zhang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China
| | - Ting Lian
- School of Clinical Medicine, Xi'an Medical University, Xi'an, 710021, China
| | - Haihua Wang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Xi'an Key Laboratory of Advanced Performance Materials and Polymers, Shaanxi University of Science & Technology, Xi'an, 710021, China.
- Key Laboratory of Chemical Additives for China National Light Industry, Xi'an, 710021, China.
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6
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Yeganegi A, Fardindoost S, Tasnim N, Hoorfar M. Molecularly imprinted polymers (MIP) combined with Raman spectroscopy for selective detection of Δ⁹-tetrahydrocannabinol (THC). Talanta 2024; 267:125271. [PMID: 37806109 DOI: 10.1016/j.talanta.2023.125271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/05/2023] [Accepted: 10/02/2023] [Indexed: 10/10/2023]
Abstract
A proof-of-concept sensor is developed for the sensitive and selective detection of Trans-Δ⁹-tetrahydrocannabinol (THC) based on a molecularly imprinted polymer (MIP) synthesized with a THC template which was analyzed using Raman spectroscopy to perform label-free monitoring of THC based on a single identifying Raman peak. The MIP sensor produced a peak at 1614 cm-1 in the Raman spectrum originating from the THC target molecule, allowing for the selective quantification of bound THC with the lowest detection limit of 250 ppm. A higher sensitivity of the MIP to the THC target molecule was observed compared to the non-imprinted polymer (NIP) control which confirmed the presence of THC-specific recognition sites within the synthesized MIP sensing material. The selectivity of this MIP-based sensor was determined by measuring the Raman spectrum of MIP exposed to Cannabidiol (CBD), ethanol, and acetone.
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Affiliation(s)
- Arian Yeganegi
- School of Engineering and Computer Science, University of Victoria, Victoria, BC, Canada
| | - Somayeh Fardindoost
- School of Engineering and Computer Science, University of Victoria, Victoria, BC, Canada
| | - Nishat Tasnim
- School of Engineering and Computer Science, University of Victoria, Victoria, BC, Canada
| | - Mina Hoorfar
- School of Engineering and Computer Science, University of Victoria, Victoria, BC, Canada.
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Sodkrathok P, Karuwan C, Kamsong W, Tuantranont A, Amatatongchai M. Patulin-imprinted origami 3D-ePAD based on graphene screen-printed electrode modified with Mn-ZnS quantum dot coated with a molecularly imprinted polymer. Talanta 2023; 262:124695. [PMID: 37229813 DOI: 10.1016/j.talanta.2023.124695] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/27/2023] [Accepted: 05/19/2023] [Indexed: 05/27/2023]
Abstract
We developed a novel, compact, three-dimensional electrochemical paper-based analytical device (3D-ePAD) for patulin (PT) determination. The selective and sensitive PT-imprinted Origami 3D-ePAD was constructed based on a graphene screen-printed electrode modified with manganese-zinc sulfide quantum dots coated with patulin imprinted polymer (Mn-ZnS QDs@PT-MIP/GSPE). The Mn-ZnS QDs@PT-MIP was synthesized using 2-oxindole as the template, methacrylic acid (MAA) as a monomer, N,N'-(1,2-dihydroxyethylene) bis (acrylamide) (DHEBA) as cross-linker and 2,2'-azobis (2-methylpropionitrile) (AIBN) as initiator, respectively. The Origami 3D-ePAD was designed with hydrophobic barrier layers formed on filter paper to provide three-dimensional circular reservoirs and assembled electrodes. The synthesized Mn-ZnS QDs@PT-MIP was quickly loaded on the electrode surface by mixing with graphene ink and then screen-printing on the paper. The PT-imprinted sensor provides the greatest enhancement in redox response and electrocatalytic activity, which we attributed to synergetic effects. This arose from an excellent electrocatalytic activity and good electrical conductivity of Mn-ZnS QDs@PT-MIP, which improved electron transfer between PT and the electrode surface. Under the optimized DPV conditions, a well-defined PT oxidation peak appears at +0.15 V (vs Ag/AgCl) using 0.1 M of phosphate buffer (pH 6.5) containing 5 mM K3Fe(CN)6 as the supporting electrolyte. Our developed PT imprinted Origami 3D-ePAD revealed excellent linear dynamic ranges of 0.001-25 μM, with a detection limit of 0.2 nM. Detection performance indicated that our Origami 3D-ePAD possesses outstanding detection performance from fruits and CRM in terms of high accuracy (%Error for inter-day is 1.11%) and precision (%RSD less than 4.1%). Therefore, the proposed method is well-suited as an alternative platform for ready-to-use sensors in food safety. The imprinted Origami 3D-ePAD is an excellent disposable device with a simple, cost-effective, and fast analysis, and it is ready to use for determining patulin in actual samples.
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Affiliation(s)
- Porntip Sodkrathok
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand
| | - Chanpen Karuwan
- Graphene and Printed Electronics for Dual-Use Applications Research Division (GPERD), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Wichayaporn Kamsong
- Graphene and Printed Electronics for Dual-Use Applications Research Division (GPERD), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Adisorn Tuantranont
- Graphene and Printed Electronics for Dual-Use Applications Research Division (GPERD), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Maliwan Amatatongchai
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190, Thailand.
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Mo H, Li X, Zhou X, Jia X, Wang H, Xu Z, Wei X. Preparation of bifunctional monomer molecularly imprinted polymer filled solid-phase extraction for sensitivity improvement of quantitative analysis of sulfonamide in milk. J Chromatogr A 2023; 1700:464046. [PMID: 37167804 DOI: 10.1016/j.chroma.2023.464046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 05/13/2023]
Abstract
To solve the problems of unstable adsorption performance and high organic solvent consumption of traditional molecular imprinting materials, we developed a water-resistant and highly adsorptive molecularly imprinted sulfamethazine polymer (MIP) through a novel synthetic strategy consisting of the application of mixed functional monomers combined with hydrophobic crosslinkers. The results showed that the imprinting factor of the prepared MIP was increased from 0.93 to 4.38, and that the relative selection coefficient k' was 5.59. With the application of the material to be developed as a solid-phase extraction (SPE) filler for sulfonamides (SAs) in milk combined with UPLC-MS/MS, the validated method showed a sensitive quantification limit (0.89 µg/kg), a steady recovery (95.55%-97.97%) and an excellent precision (0.08%-2.92% RSD). Moreover, after 5 times usage, the recovery rate of MIP-SPE was still above 90%. Therefore, the prepared materials showed high performance of molecular adsorption and were water-resistant, which was also considered an excellent filler of SPE for SAs extraction in food or other fields.
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Affiliation(s)
- Huixin Mo
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Xinyue Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Xiuying Zhou
- Zhongshan agricultural product quality and Safety Inspection Institute, Zhongshan, 528403, China
| | - Xiaofei Jia
- Zhongshan agricultural product quality and Safety Inspection Institute, Zhongshan, 528403, China
| | - Hong Wang
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaoqun Wei
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, China.
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Pirot SM, Omer KM, Alshatteri AH, Ali GK, Shatery OBA. Dual-template molecularly surface imprinted polymer on fluorescent metal-organic frameworks functionalized with carbon dots for ascorbic acid and uric acid detection. Spectrochim Acta A Mol Biomol Spectrosc 2023; 291:122340. [PMID: 36702082 DOI: 10.1016/j.saa.2023.122340] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/29/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
In this work, dual-template molecularly imprinted polymer surfaces imprinted on blue fluorescent Cr-based MOF (Cr-MOF) functionalized with yellow emissive carbon dots (Y-CDs) were prepared using l-ascorbic acid (AA) and uric acid (UA) as templates for simultaneous selective recognition of AA and UA. The as-prepared nanocomposite probe (Y-CDs/Cr-MOF@MIP) contains two recognition site cavities and emits a dual well-resolved fluorescence spectra when excited at 390 nm; blue emission (λem 450 nm) is due to Cr-MOF, and yellow emission (λem 560 nm) is due to Y-CDs. The yellow fluorescence emission of Y-CDs was quenched upon the addition of ascorbic acid, while Cr-MOF's emission remained unaffected. In the same way, the blue fluorescence emission of the Cr-MOFs was quenched in the presence of uric acid, while the yellow emission remained constant. Both emissions were quenched in a sample containing both AA and UA. This can be exploited to design a dual-template biosensor to detect UA and AA simultaneously. The Y-CDs/Cr-MOF@MIP sensor displayed a dynamic linear response for AA in the range 25.0 µM - 425.0 µM with a detection limit of 1.30 µM, and for UA in the range 25.0 µM - 425.0 µM with a detection limit of 1.10 µM. The dual-target probe Y-CDs/Cr-MOF@MIP was highly selective and sensitive for the detection of UA and AA in human urine samples due to the selectivity of the two recognition sites.
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Affiliation(s)
- Shano M Pirot
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq; Center for Biomedical Analysis, Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq
| | - Khalid M Omer
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq; Center for Biomedical Analysis, Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq.
| | - Azad H Alshatteri
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq; Department of Chemistry, College of Education, University of Garmian, Sulaimaniyah, Kurdistan Region, Iraq
| | - Gona K Ali
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq; Center for Biomedical Analysis, Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq
| | - Omer B A Shatery
- Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq; Center for Biomedical Analysis, Department of Chemistry, College of Science, University of Sulaimani, Qliasan St,46002, Sulaimani City, Kurdistan Region, Iraq
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10
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Pilvenyte G, Ratautaite V, Boguzaite R, Samukaite-Bubniene U, Plausinaitis D, Ramanaviciene A, Bechelany M, Ramanavicius A. Molecularly imprinted polymers for the recognition of biomarkers of certain neurodegenerative diseases. J Pharm Biomed Anal 2023; 228:115343. [PMID: 36934618 DOI: 10.1016/j.jpba.2023.115343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/25/2023] [Accepted: 03/12/2023] [Indexed: 03/14/2023]
Abstract
The appearance of the biomarkers in body fluids like blood, urine, saliva, tears, etc. can be used for the identification of many diseases. This article aimed to summarize the studies about electrochemical biosensors with molecularly imprinted polymers as sensitive and selective layers on the electrode to detect protein-based biomarkers of such neurodegenerative diseases as Alzheimer's disease, Parkinson's disease, and stress. The main attention in this article is focused on the detection methods of amyloid-β oligomers and p-Tau which are representative biomarkers for Alzheimer's disease, α-synuclein as the biomarker of Parkinson's disease, and α-amylase and lysozyme as the biomarkers of stress using molecular imprinting technology. The research methods, the application of different electrodes, the influence of the polymers, and the established detection limits are reviewed and compared.
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Affiliation(s)
- Greta Pilvenyte
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, LT-10257 Vilnius, Lithuania
| | - Vilma Ratautaite
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, LT-10257 Vilnius, Lithuania; Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania.
| | - Raimonda Boguzaite
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, LT-10257 Vilnius, Lithuania
| | - Urte Samukaite-Bubniene
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, LT-10257 Vilnius, Lithuania; Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
| | - Deivis Plausinaitis
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
| | - Almira Ramanaviciene
- NanoTechnas - Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania
| | - Mikhael Bechelany
- Institut Européen des Membranes, IEM, UMR 5635, University of Montpellier, CNRS, ENSCM, 34090 Montpellier, France
| | - Arunas Ramanavicius
- Department of Nanotechnology, State Research Institute Center for Physical Sciences and Technology, Saulėtekio av. 3, LT-10257 Vilnius, Lithuania; Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT-03225 Vilnius, Lithuania.
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11
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Antipchik M, Reut J, Ayankojo AG, Öpik A, Syritski V. MIP-based electrochemical sensor for direct detection of hepatitis C virus via E2 envelope protein. Talanta 2022; 250:123737. [PMID: 35850055 DOI: 10.1016/j.talanta.2022.123737] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 02/07/2023]
Abstract
Hepatitis C is the most common liver disease caused by Hepatitis C virus (HCV), and can evolve into serious health problems e.g. cirrhosis and hepatocellular carcinoma. Nowadays, the initial stage of the disease cannot be practically diagnosed, representing thus an extremely important problem of modern public health care. This study is aimed at the development of a sensor for direct detection of HCV. The sensor utilizes a synthetic recognition element prepared by the technology of molecular imprinting and representing a molecularly imprinted polymer (MIP) having molecular recognition sites of HCV envelope protein E2 (E2-MIP). E2-MIP integrated into an electrochemical sensor platform allows quantitative evaluation of binding of free E2 protein as well as HCV-mimetic particles (HCV-MPs) in human plasma with LOD value of 4.6 × 10-4 ng/mL (for HCV-MPs). The developed electrochemical HCV sensor represents a simple, fast and inexpensive alternative for the existing methods of HCV detection and paves the way for the point-of care diagnostics of Hepatitis C.
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Affiliation(s)
- Mariia Antipchik
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Jekaterina Reut
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Akinrinade George Ayankojo
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Andres Öpik
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Vitali Syritski
- Department of Materials and Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
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12
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Balciunas D, Plausinaitis D, Ratautaite V, Ramanaviciene A, Ramanavicius A. Towards electrochemical surface plasmon resonance sensor based on the molecularly imprinted polypyrrole for glyphosate sensing. Talanta 2022; 241:123252. [PMID: 35121544 DOI: 10.1016/j.talanta.2022.123252] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 12/24/2021] [Accepted: 01/19/2022] [Indexed: 12/16/2022]
Abstract
In this research the molecular imprinting technology was applied for the formation of glyphosate-sensitive layer. The glyphosate imprinted conducting polymer polypyrrole (MIPpy) was deposited on a gold chip/electrode and used as an electrochemical surface plasmon resonance (ESPR) sensor. The results described in this study disclose some restrictions and challenges, which arise during the development of glyphosate ESPR sensor based on the molecularly imprinted polymer development stage. It was demonstrated, that glyphosate could significantly affect the electrochemical deposition process of molecularly imprinted polymer on the electrode. The results of cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and surface plasmon resonance (SPR) have demonstrated that glyphosate molecules tend to interact with bare gold electrode and thus hinder the polypyrrole deposition. As a possible solution, the formation of a self-assembled monolayer (SAM) of 11-(1H-Pyrrol-1-yl)undecane-1-thiol (PUT) before electrochemical deposition of MIPpy and NIPpy was applied. Dissociation constant (KD) and free energy of Gibbs (ΔG0) values of glyphosate on MIPpy and Ppy without glyphosate imprints (NIPpy) were calculated. For the interaction of glyphosate with MIPpy the KD was determined as 38.18 ± 2.33⋅10-5 and ΔG0 as -19.51 ± 0.15 kJ/mol.
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Affiliation(s)
- Domas Balciunas
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT, 03225, Vilnius, Lithuania
| | - Deivis Plausinaitis
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT, 03225, Vilnius, Lithuania
| | - Vilma Ratautaite
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT, 03225, Vilnius, Lithuania; Nanotechnology Laboratory, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology (FTMC), Saulėtekio av. 3, LT, 10257, Vilnius, Lithuania
| | - Almira Ramanaviciene
- NanoTechnas - Center for Nanotechnology and Material Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT, 03225, Vilnius, Lithuania
| | - Arunas Ramanavicius
- Department of Physical Chemistry, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko Str. 24, LT, 03225, Vilnius, Lithuania; Nanotechnology Laboratory, Department of Functional Materials and Electronics, Center for Physical Sciences and Technology (FTMC), Saulėtekio av. 3, LT, 10257, Vilnius, Lithuania.
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13
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Yagishita M, Shiraishi F, Tanigawa T, Kubo T, Nakayama SF, Nakajima D. Selective Recovery of Estrogenic Endocrine Disruptors from 48 Environmental Samples Using a Substrate for Activity-Specific Concentration. Bull Environ Contam Toxicol 2022; 108:658-662. [PMID: 34694444 DOI: 10.1007/s00128-021-03391-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
hER-MIP is a molecularly imprinted polymer (MIP) that has been shown to selectively collect human estrogen receptor (hER) binding active substances. However, environmental samples contain various chemicals depending on the location and regional differences, and the hER binding activity depends on the sample type. Thus, the general applicability of hER-MIP to actual environmental samples must be elucidated. In this study, 48 environmental samples were collected and screened with hER-MIP, and a yeast assay was performed to evaluate the adsorption characteristics of the samples according to the adsorption and elution fractions. The results showed that hER-MIP collects hER binding active substances almost selectively but does not collect constitutive androstane receptor (CAR) binding active substances selectively. CAR binding activity was detected in the adsorbed fraction because several hER binding active substances also demonstrate CAR binding activity.
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Affiliation(s)
- Mayuko Yagishita
- Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan.
| | - Fujio Shiraishi
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Tetsuya Tanigawa
- Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Takuya Kubo
- Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Shoji F Nakayama
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Daisuke Nakajima
- National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8675, Japan
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14
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Costa R, Costa J, Moreira P, Brandão ATSC, Mafra I, Silva AF, Pereira CM. Molecularly imprinted polymer as a synthetic antibody for the biorecognition of hazelnut Cor a 14-allergen. Anal Chim Acta 2022; 1191:339310. [PMID: 35033254 DOI: 10.1016/j.aca.2021.339310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/29/2021] [Accepted: 11/18/2021] [Indexed: 02/06/2023]
Abstract
Artificial receptors that mimic their natural biological counterparts have several advantages, such as lower production costs and increased shelf-life stability/versatility, while overcoming the ethical issues related to raising antibodies in animals. In this work, the proposed tailor-made molecularly imprinted polymer (MIP)-allergen receptors aimed at substituting or even transcending the performance of biological antibodies. For this purpose, a MIP was proposed as an artificial antibody for the recognition of hazelnut Cor a 14-allergen. The target protein was grafted onto the conducting polypyrrole receptor film using gold screen-printed electrodes (Au-SPE). The electrochemical assessment presented a linear response for the dynamic range of 100 fg mL-1-1 μg mL-1 and a LOD of 24.5 fg mL-1, as determined by square wave voltammetry from the calibration curves prepared with standards diluted in phosphate buffer. Surface plasmon resonance (SPR) was used as a secondary transducer to evaluate the performance of the Cor a 14-MIP sensor, enabling a linear dynamic range of 100 fg mL-1- 0.1 μg mL-1 and a LOD of 18.1 fg mL-1. The selectivity of the tailored-made Cor a 14-MIP was tested against potentially cross-reactive plant/animal species based on the rebinding affinity (Freundlich isotherm-KF) of homologues/similar proteins, being further compared with custom-made polyclonal anti-Cor a 14 IgG immunosensor. Results evidenced that the MIP mimics the biorecognition of biological antibodies, presenting higher selectivity (only minor cross-reactivity towards walnut and Brazil nut 2S albumins) than the Cor a 14/anti-Cor a 14 IgG immunosensor. The application of electrochemical Cor a 14-MIP sensor to model mixtures of hazelnut in pasta enabled quantifying hazelnut down to 1 mg kg-1 (corresponding to 0.16 mg kg-1 of hazelnut protein in the matrix). To the best of our knowledge, Cor a 14-MIP is the first sensor based on an artificial/synthetic biorecognition platform for the specific detection of hazelnut allergens, while presenting high-performance parameters with demonstrated application in food safety management.
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Affiliation(s)
- Renata Costa
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Faculdade de Ciências da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre 687, 4169-007, Porto, Portugal.
| | - Joana Costa
- REQUIMTE-LAQV/Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, Porto, Portugal
| | - Patrícia Moreira
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Faculdade de Ciências da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Ana T S C Brandão
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Faculdade de Ciências da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Isabel Mafra
- REQUIMTE-LAQV/Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, Porto, Portugal
| | - A Fernando Silva
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Faculdade de Ciências da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Carlos M Pereira
- Centro de Investigação em Química da Universidade do Porto (CIQUP), Faculdade de Ciências da Universidade do Porto, Departamento de Química e Bioquímica, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
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15
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Taheri N, Khoshsafar H, Ghanei M, Ghazvini A, Bagheri H. Dual-template rectangular nanotube molecularly imprinted polypyrrole for label-free impedimetric sensing of AFP and CEA as lung cancer biomarkers. Talanta 2021; 239:123146. [PMID: 34942484 DOI: 10.1016/j.talanta.2021.123146] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 12/06/2021] [Accepted: 12/11/2021] [Indexed: 02/04/2023]
Abstract
A high-performance sensing layer based on dual-template molecularly imprinted polymer (DMIP) was fabricated and successfully applied for one-by-one detection of carcinoembryonic antigen (CEA) and alpha-fetoprotein (AFP) as lung cancer biomarkers. The plastic antibodies of AFP and CEA were created into the electropolymerized polypyrrole (PPy) on a fluorine-doped tin oxide (FTO) electrode. Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) tests were performed to pursue the formation and characterization of the sensing layer. Methyl orange (MO) increased the conductivity of PPy and induced the formation of MO doped PPy (PPy-MO) rectangular-shaped nanotubes. Using impedimetric detection, the rebinding of the template antigens was evaluated, the charge transfer resistance increased as the concentration of AFP and CEA increased. The linear dynamic ranges of 5-104 and 10-104 pg mL-1 and detection limits of 1.6 and 3.3 pg mL-1 were obtained for CEA and AFP, respectively. Given satisfactory results in the determination of AFP and CEA in the human serum samples, high sensitivity, and good stability of DMIP sensor made it a promising method for sensing of AFP and CEA in serum samples.
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Affiliation(s)
- Navid Taheri
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hosein Khoshsafar
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mostafa Ghanei
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Ghazvini
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Hasan Bagheri
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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16
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Pan Y, Shan D, Ding LL, Yang XD, Xu K, Huang H, Wang JF, Ren HQ. Developing a generally applicable electrochemical sensor for detecting macrolides in water with thiophene-based molecularly imprinted polymers. Water Res 2021; 205:117670. [PMID: 34583204 DOI: 10.1016/j.watres.2021.117670] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 08/30/2021] [Accepted: 09/11/2021] [Indexed: 05/05/2023]
Abstract
Our screening data revealed the threat macrolide antibiotics, especially azithromycin (AZN), posed to human health with its increasing occurrence in water environment. The electrochemical sensor based on molecularly imprinted polymer (MIP) is a promising platform that caters for the next generation of intelligent wastewater treatment plants (WWTPs) by virtue of its wide tolerance to water from all sources and in-situ monitoring. However, low initiation potentials of cross-linking monomers contributed by the electron-rich circumstance allowed them to usurp sites designed for functional monomers when electrically stimulated, leading to an unsatisfactory binding capacity. Another uncertainty is that multiple reaction sites of cross-linking monomers granted them complex polymerization routes and made it difficult to ensure the consistency of preparation. Serval monomers had been investigated with electrochemical tools and the performance of sensors constructed with these monomers were compared in this study. Based on the results, we proposed a protocol in which a novel functional monomer possessing a stronger electron-donating group, phenyl, was adopted to compete for the dominance in electropolymerization. Beyond that, the cross-linking monomer was modified with electron-withdrawing groups to raise its initiation potential. A monothiophene with a moderate initiation potential was also recruited as the linker to address the steric hindrance. In this way, polymerization proceeded in a specific order. It is worth mentioning that the Marangoni flow is an ideal tool to deal with the Coffee-ring deposition while drop-casting. The resulting sensor showed good performance with a limitation of detection (LOD) of 0.120 μM for AZN and a satisfactory selectivity, and the design can be applied to constructing sensors for a variety of macrolide antibiotics.
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Affiliation(s)
- Yao Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Dan Shan
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Li-Li Ding
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Xu-Dong Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Ke Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hui Huang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Jin-Feng Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Hong-Qiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
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17
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Liu SS, Li JL, Ge LK, Li CL, Zhao JL, Zhang QQ, Ying GG, Chen CE. Selective diffusive gradients in thin-films with molecularly imprinted polymer for measuring fluoroquinolone antibiotics in waters. Sci Total Environ 2021; 790:148194. [PMID: 34380251 DOI: 10.1016/j.scitotenv.2021.148194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/26/2021] [Accepted: 05/28/2021] [Indexed: 06/13/2023]
Abstract
Fluoroquinolones (FQs) have raised significant concerns due to their ubiquitous occurrence and promoting of antimicrobial resistance (AMR). In this study, a molecularly imprinted polymer-diffusive gradient in thin-films (MIP-DGT) sampler is developed for selective measurement of FQs in waters by using a commercial available MIP material as the binding agent. The MIP-DGT shows selective adsorption of the FQs and linearly accumulates the FQs over the deployment time. MIP-DGT measurement is independent of pH (6-8) and ionic strength (IS) (0.01-0.5 M) but is affected by DOM at higher concentrations (~10 mg•L-1), which is due to the altered diffusion coefficients and reduced adsorption on the MIP binding gel. Significant interaction effects of DOM with pH or IS indicate that this is the predominant influence on the MIP-DGT performance, which results in a lower measurement by the MIP-DGT but this is curtailed to some extend with increasing IS or pH. The MIP-DGT measurements, however, correlate well with those by grab sampling in a wastewater treatment plant, suggesting it is reliable for measuring FQs in waters. For the first time, we demonstrate that key water chemistry parameters do have interaction effects on the DGT measurements, which should be considered for the data interpretation. The MIP-DGT is a promising tool to understand the interaction effects of the environmental parameters on the fate, behaviours and bioavailability/toxicity of organic contaminants and improve environmental risk assessments in the environment and modelling.
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Affiliation(s)
- Si-Si Liu
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Jin-Ling Li
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Lin-Ke Ge
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Cai-Lin Li
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Jian-Liang Zhao
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Qian-Qian Zhang
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Guang-Guo Ying
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China
| | - Chang-Er Chen
- Environmental Research Institute/School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, PR China.
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18
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Mamipour Z, Nematollahzadeh A, Kompany-Zareh M. Molecularly imprinted polymer grafted on paper and flat sheet for selective sensing and diagnosis: a review. Mikrochim Acta 2021; 188:279. [PMID: 34331135 DOI: 10.1007/s00604-021-04930-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/05/2021] [Indexed: 12/14/2022]
Abstract
Molecularly imprinted polymers are efficient and selective adsorbents which act as artificial receptors for desired compounds with the ability to recognize the size, shape, and functional groups of the compounds simultaneously. A molecularly imprinted polymer is prepared by the polymerization of functional monomers around a template (analyte) molecule. Afterward, the removal of the template from the polymer matrix leaves a selective cavity behind. The fabrication and development of molecularly imprinted polymers grew rapidly, due to their low cost, simple preparation, selectivity, sensitivity, and stable physicochemical properties. Traditionally, molecularly imprinted polymers can be synthesized using two main methods, namely bulk and surface imprinting. For more efficient use of the latter method, researchers have developed molecularly imprinted polymers grafted on the solid-phase matrix (substrate). This grafting technique would be particularly useful for surface imprinting of macromolecules, such as proteins. Cellulose fibers of papers with unique properties such as being abundant, retaining a porous structure, having good adsorption properties, and possessing hydroxyl groups naturally have gained much attention as substrate. The goal of this review is to introduce molecularly imprinted polymer-grafted or molecularly imprinted polymer-coated paper, as an interesting, simple, and efficient method in the detection and separation of small and large molecules. Therefore, in the present paper, several recent preparation techniques and applications of molecularly imprinted polymer-grafted paper are reviewed and discussed in detail. Green, cost-effective, selective, and sensitive paper-based sensor prepared via grafting molecularly imprinted polymer on paper surface with the potential use for online detection trace of analytes in the point-of-care testing.
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Affiliation(s)
- Zahra Mamipour
- Department of Chemistry, Institute of Advanced Studies in Basic Sciences, Zanjan, Iran.,Chemical Engineering Department, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
| | - Ali Nematollahzadeh
- Chemical Engineering Department, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran.
| | - Mohsen Kompany-Zareh
- Department of Chemistry, Institute of Advanced Studies in Basic Sciences, Zanjan, Iran. .,Department of Chemistry, Dalhousie University, PO Box 15000, Halifax, NS, B3H 4R2, Canada.
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19
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Paredes-Ramos M, Sabín-López A, Peña-García J, Pérez-Sánchez H, López-Vilariño JM, Sastre de Vicente ME. Computational aided acetaminophen - phthalic acid molecularly imprinted polymer design for analytical determination of known and new developed recreational drugs. J Mol Graph Model 2020; 100:107627. [PMID: 32674027 DOI: 10.1016/j.jmgm.2020.107627] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 04/21/2020] [Accepted: 04/21/2020] [Indexed: 12/22/2022]
Abstract
In recent times, abuse drug consumption rates have been increasing. In addition, authorities have detected a trend in the development of new substances expressly created to avoid legislation. These novel psychoactive substances (NPS) are non-registered formulations, closely chemically related to outlawed ones to maintain the same psychotropic effects while circumventing legal restrictions. This issue arises enormous social, sanitary, and road safety problems since there is no way to detect nor quantify these non-registered substances. The aim of this work is the development of a high selective material able to pre-concentrate and detect NPS. On that account, molecularly imprinted polymers (MIPs) designed with an imprinted cavity that matches the cathinones structural shape were proposed to detect both conventional and new cathinone derived recreational drugs. The increasing number of illicit drug modifications that is being reported requires developing a receptor valid for not only known molecules but also for incoming ones; thus, a virtual procedure must be carried out to take a step forward towards future modifications. Accordingly, a computational MIP design is proposed as the most appropriated method to effectively design this receptor. By means of molecular dynamics and molecular docking, several combinations are studied regarding their pre-polymerization complex stability but also their rebinding capacity against the proposed analytes. Hence, a phthalic acid - acetaminophen MIP is selected as the most well-suited receptor, valid for current and forthcoming cathinone recreational drugs.
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Affiliation(s)
- M Paredes-Ramos
- Laboratory of Chemistry, Technological Research Center (CIT), Universidade da Coruña (UDC), Campus de Esteiro s/n, 15403, Ferrol - A Coruña, Spain; METMED Research Group, Physical Chemistry Department, Universidade da Coruña (UDC), Campus da Zapateira s/n, 15071, A Coruña, Spain.
| | - A Sabín-López
- Laboratory of Chemistry, Technological Research Center (CIT), Universidade da Coruña (UDC), Campus de Esteiro s/n, 15403, Ferrol - A Coruña, Spain; METMED Research Group, Physical Chemistry Department, Universidade da Coruña (UDC), Campus da Zapateira s/n, 15071, A Coruña, Spain
| | - J Peña-García
- Structural Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica San Antonio de Murcia (UCAM), Campus de Los Jerónimos s/n, 30107, Murcia, Spain
| | - H Pérez-Sánchez
- Structural Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica San Antonio de Murcia (UCAM), Campus de Los Jerónimos s/n, 30107, Murcia, Spain
| | - J M López-Vilariño
- Laboratory of Chemistry, Technological Research Center (CIT), Universidade da Coruña (UDC), Campus de Esteiro s/n, 15403, Ferrol - A Coruña, Spain; Hijos de Rivera S.A.U., C/ José María Rivera Corral n°6, 15008, A Coruña, Spain
| | - M E Sastre de Vicente
- METMED Research Group, Physical Chemistry Department, Universidade da Coruña (UDC), Campus da Zapateira s/n, 15071, A Coruña, Spain
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da Silva LC, de Carvalho TC, Pereira I, Marana JC, Laviola BG, Abdelnur PV, Vaz BG. Molecularly Imprinted Polymer-Coated Probe Electrospray Ionization Mass Spectrometry Determines Phorbol Esters and Deoxyphorbol Metabolites in Jatropha curcas Leaves. J Am Soc Mass Spectrom 2019; 30:2051-2059. [PMID: 31342263 DOI: 10.1007/s13361-019-02269-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 05/07/2019] [Accepted: 06/09/2019] [Indexed: 06/10/2023]
Abstract
In this study, a molecularly imprinted polymer-coated probe electrospray ionization mass spectrometry (MIPCPESI-MS) method was developed for detection of phorbol esters (PEs) and deoxyphorbol metabolites in Jatropha curcas leaves. Such an approach was established by sticking on a metallic needle a molecularly imprinted polymer to particularly design a MIP-coated probe for selective sampling and ionization of PEs and deoxyphorbol metabolites. By a subsequent application of a high voltage and methanol, as spray solvent, ESI was generated for direct and rapid analysis under ambient and open-air conditions. MIP-coated probe exhibited a high sampling capacity of the PEs and its metabolites in methanolic extracts of J. curcas leaves compared with the non-imprinted polymer (NIP)-coated probe. MIPCPESI-MS allowed the detection of phorbol 12,13-diacetate (PDA) from J. curcas leaves with minimal sample preparation, and with detection limit and quantification reaching 0.28 μg/mL and 0.92 μg/mL, respectively. Also, good linearity was obtained with R2 > 0.99 and precision and accuracy values between 4.06-13.49% and - 1.60 to - 15.26%, respectively. The current method was successfully applied to screening methanolic extracts of six different J. curcas leaf genotypes (three toxic and three non-toxic). PDA and three PE deoxyphorbol metabolites were identified only from toxic genotypes, in which PDA was determined with concentration ranging from 222.19 ± 23.55 to 528.23 ± 19.72 μg/g. All these findings support that the MIPCPESI-MS method developed here has a high potential for the analysis of PEs in plant extracts enabling differentiation of toxic and non-toxic genotypes earlier in the leaves.
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Affiliation(s)
- Lidya C da Silva
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Thays C de Carvalho
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Igor Pereira
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil
| | - Julio Cesar Marana
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Bruno G Laviola
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Patricia V Abdelnur
- Embrapa Agroenergy, Brazilian Agricultural Research Company, Brasília, DF, 70770-901, Brazil
| | - Boniek G Vaz
- Laboratory of Chromatography and Mass Spectrometry (LaCEM), Chemistry Institute, Federal University of Goiás, Goiânia, GO, 74690-900, Brazil.
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21
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Ritt CL, Chisholm BJ, Bezbaruah AN. Assessment of molecularly imprinted polymers as phosphate sorbents. Chemosphere 2019; 226:395-404. [PMID: 30947049 DOI: 10.1016/j.chemosphere.2019.03.087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/05/2019] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
Phosphorus (P) is a non-renewable natural resource which is used extensively in agriculture as a fertilizer. Phosphate (PO43-) rocks are mined to meet growing agricultural demands induced by rising global populations. Much of the P used in agricultural fields finds its way into surface waters where it permanently resides, leading to devastating effects on the aquatic ecosystem through eutrophication of the waterbodies. This research was aimed at developing a sorbent that can engender a P reuse cycle by utilizing eutrophic surface waters as viable P sources (mines). The goal was to develop a sorbent which can selectively recover low concentration (≤100 P μg L-1) typical of eutrophic waters. Molecularly imprinted polymers (MIPs) were identified as a potential technology for accomplishing this goal. Three MIPs were screened for viability by assessing their sorption capacities. After the initial screening, one MIP was selected for further studies. The selected MIP was found to have partial PO43- selectivity and tunable P sorption capacity. Adjusting the template:monomer ratio resulted in an increase in P sorption capacity from ∼11 to ∼28 mg PO43--P g-1, making this MIP competitive with existing technologies. The MIP was characterized to understand the polymer chemistry and mechanisms of P-removal. The possible mechanisms of aqueous P removal by the MIP were identified as selective chemical binding to the imprinted recognition sites and electrostatic attraction.
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Affiliation(s)
- Cody L Ritt
- Nanoenvirology Research Group, Department of Civil and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA.
| | - Bret J Chisholm
- Bridgestone Americas, 10 E Firestone Blvd, Akron, OH, 44317, USA; Previously with the Department of Coatings and Polymeric Materials, College of Science and Mathematics, North Dakota State University, Fargo, ND, 58105, USA.
| | - Achintya N Bezbaruah
- Nanoenvirology Research Group, Department of Civil and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA.
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Qiu X, Xu XY, Chen X, Wu Y, Guo H. Preparation of a molecularly imprinted sensor based on quartz crystal microbalance for specific recognition of sialic acid in human urine. Anal Bioanal Chem 2018; 410:4387-4395. [PMID: 29736700 DOI: 10.1007/s00216-018-1094-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/25/2018] [Accepted: 04/17/2018] [Indexed: 11/28/2022]
Abstract
A novel molecularly imprinted quartz crystal microbalance (QCM) sensor was successfully prepared for selective determination of sialic acid (SA) in human urine samples. To obtain the QCM sensor, we first modified the gold surface of the QCM chip by self-assembling of allylmercaptane to introduce polymerizable double bonds on the chip surface. Then, SA molecularly imprinted polymer (MIP) nanofilm was attached to the modified QCM chip surface. For comparison, we have also characterized the nonmodified and improved surfaces of the QCM sensor by using atomic force microscopy (AFM) and Fourier transform infrared (FTIR) spectroscopy. We then tested the selectivity and detection limit of the imprinted QCM sensor via a series of adsorption experiments. The results show a linear response in the range of 0.025-0.50 μmol L-1 for sialic acid. Moreover, the limit of detection (LOD) of the prepared imprinted QCM sensor was found to be 1.0 nmol L-1 for sialic acid, and high recovery values range from 87.6 to 108.5% with RSD < 8.7 (n = 5) for the spiked urine sample obtained. Overall, this work presents how a novel QCM sensor was developed and used to detect sialic acid in human urine samples. Graphical abstract Specific recognition of sialic acid by the MIP-QCM sensor system.
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Affiliation(s)
- Xiuzhen Qiu
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China.
| | - Xian-Yan Xu
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Xuncai Chen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Yiyong Wu
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Huishi Guo
- College of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China.
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Lay S, Yu HN, Hu BX, Shen SR. Molecularly imprinted polymers as the extracted sorbents of clenbuterol ahead of liquid chromatographic determination. J Zhejiang Univ Sci B 2016; 17:465-75. [PMID: 27256680 DOI: 10.1631/jzus.b1500225] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A pre-treatment methodology for clenbuterol hydrochloride (CLEN) isolation and enrichment in a complex matrix environment was developed through exploiting molecularly imprinted polymers (MIPs). CLEN-imprinted polymers were synthesized by the combined use of ally-β-cyclodextrin (ally-β-CD) and methacrylic acid (MAA), allyl-β-CD and acrylonitrile (AN), and allyl-β-CD and methyl methacrylate (MMA) as the binary functional monomers. MAA-linked allyl-β-CD MIPs (M-MAA) were characterized by Fourier transform-infrared (FT-IR) spectroscopy and a scanning electron microscope (SEM). Based upon the results, M-MAA polymers generally proved to be an excellent selective extraction compared to its references: AN-linked allyl-β-CD MIPs (M-AN) and MMA-linked allyl-β-CD MIPs (M-MMA). M-MAA polymers were eventually chosen to run through a molecularly imprinted solid-phase extraction (MISPE) micro-column to enrich CLEN residues spiked in pig livers. A high recovery was achieved, ranging from 91.03% to 96.76% with relative standard deviation (RSD) ≤4.45%.
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Affiliation(s)
- Sovichea Lay
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Hai-Ning Yu
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Bao-Xiang Hu
- Department of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou 310032, China
| | - Sheng-Rong Shen
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
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Li X, Wang Y, Sun Q, Xu B, Yu Y, Wang X. Molecularly imprinted solid phase extraction in a syringe filter for determination of triazine herbicides in Radix Paeoniae Alba by ultra-fast liquid chromatography. Talanta 2015; 148:539-47. [PMID: 26653483 DOI: 10.1016/j.talanta.2015.11.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 11/03/2015] [Accepted: 11/11/2015] [Indexed: 10/22/2022]
Abstract
A novel, cost-effective and simple solid phase extraction (SPE) method, by using a syringe connected with a nylon membrane filter as the adsorbent container, was developed for the extraction of triazine herbicides from Radix Paeoniae Alba (RPA) samples. The selective molecularly imprinted polymers (MIPs) synthesized with the template of atrazine were employed as the adsorbents for the enrichment and purification of analytes. The extraction parameters, including the volume and type of loading solvent, the type of washing solvent and eluting solvent, were investigated. Under the optimized conditions, the final extracts were analyzed by ultra-fast liquid chromatography (UFLC). Recoveries of the developed method range from 92.4% to 107.3% with intra- and inter-day relative standard deviations (RSDs) lower than 8.2%. The calibration curve is linear in the concentration range of 0.005-2.4 µg g(-1) for desmetryn, atrazine and terbumeton, and 0.005-1.5 µg g(-1) for dimethametryn and dipropetryn, with the correlation coefficient (R(2)) higher than 0.9995. The limits of detection (LODs) of five triazine herbicides are in the range of 0.09-0.39 ng g(-1), which are lower than the maximum residue levels (MRLs) established by various official organizations. Analytical results of three real Radix Paeoniae Alba samples indicate that the proposed method is cost-effective and easy-to-use than other routine pretreatment methods.
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Affiliation(s)
- Xinpei Li
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China
| | - Yuanpeng Wang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China
| | - Qun Sun
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China
| | - Bo Xu
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China
| | - Yong Yu
- College of Instrumentation & Electrical Engineering, Jilin University, Ximinzhu Street 938, Changchun 130061, PR China
| | - Xinghua Wang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, PR China.
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Cieplak M, Szwabinska K, Sosnowska M, Chandra BKC, Borowicz P, Noworyta K, D'Souza F, Kutner W. Selective electrochemical sensing of human serum albumin by semi-covalent molecular imprinting. Biosens Bioelectron 2015; 74:960-6. [PMID: 26258876 DOI: 10.1016/j.bios.2015.07.061] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/10/2015] [Accepted: 07/26/2015] [Indexed: 11/27/2022]
Abstract
We devised and prepared a conducting molecularly imprinted polymer (MIP) for human serum albumin (HSA) determination using semi-covalent imprinting. The bis(2,2'-bithien-5-yl)methane units constituted the MIP backbone. This MIP was deposited as a thin film on an Au electrode by oxidative potentiodynamic electropolymerization to fabricate an electrochemical chemosensor. The HSA template imprinting, and then its releasing from the MIP was confirmed by the differential pulse voltammetry (DPV), electrochemical impedance spectroscopy (EIS), XPS, and PM-IRRAS measurements as well as by AFM imaging. Semi-covalent imprinting provided a very well defined locations of recognition sites in the MIP molecular cavities. These sites populated the imprinted cavities or the MIP surface only. The DPV and EIS response of the MIP film coated electrode to the HSA analyte was linear in the range of 0.8 to 20 and 4 to 80 µg/mL HSA, respectively, with the limit of detection of 16.6 and 800 ng/mL, respectively. The impressively high imprinting factor reached, exceeding 20, strongly confirmed that semi-covalent imprinting resulted in formation of a large number of very well defined molecular cavities with high affinity to the HSA molecules. The MIP selectivity against low-(molecular weight) interferences, common for physiological fluids, such as blood and urea, was very high. There was no response to the presence of these interferences at concentrations encountered in the samples analyzed. Moreover, the chemosensor selectivity to the myoglobin and cytochrome c interferences was excellent while that to lysozyme was slightly lower but still high. The chemosensor was useful for determination of abnormal HSA concentration in a control blood serum.
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Affiliation(s)
- Maciej Cieplak
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Katarzyna Szwabinska
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland; Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Marta Sosnowska
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland; Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA
| | - Bikram K C Chandra
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA
| | - Pawel Borowicz
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland; Institute of Electron Technology, Al. Lotnikow 32/46, 02-668 Warsaw, Poland
| | - Krzysztof Noworyta
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX 76203-5017, USA
| | - Wlodzimierz Kutner
- Institute of Physical Chemistry, Polish Academy of Sciences (IPC PAS), Kasprzaka 44/52, 01-224 Warsaw, Poland; Faculty of Mathematics and Natural Sciences, School of Science, Cardinal Stefan Wyszynski University in Warsaw, Wóycickiego 1/3, 01-815 Warsaw, Poland
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