Electrochemical sensing using magnetic molecularly imprinted polymer particles previously captured by a magneto-sensor

Ruiz-Córdova, Gerson A.; Khan, Sabir; Gonçalves, Luís Moreira; Pividori, María Isabel; Picasso, Gino; Sotomayor, Marı́a Del Pilar Taboada

doi:10.1016/j.talanta.2017.12.085

Cited by 32 publications

(12 citation statements)

References 44 publications

(66 reference statements)

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“…The analytical performance was validated to determine histamine in scombrid fish samples with recovery values ranging from 97 to 102% with a LOD of 2 × 10 −6 mg L −1 which is below the fish spoilage index (50 mg kg −1 ) according to legislation. The same research group proposed the same strategy to detect Methyl parathion in tuna and catfish [ 129 ], 1-chloro-2,4-dini-trobenzene (CDNB) as a toxic xenobiotic compound known to cause oxidative stress cell death and allergic reactions were also preconcentrated using magneto-actuated electrodes from the river, and tap water by Ruiz-Córdova et al [ 136 ].…”

Section: Application Of Mips In Sample Preparation For Food Safety Analysismentioning

confidence: 99%

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

et al. 2021

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Detection of relevant contaminants using screening approaches is a key issue to ensure food safety and respect for the regulatory limits established. Electrochemical sensors present several advantages such as rapidity; ease of use; possibility of on-site analysis and low cost. The lack of selectivity for electrochemical sensors working in complex samples as food may be overcome by coupling them with molecularly imprinted polymers (MIPs). MIPs are synthetic materials that mimic biological receptors and are produced by the polymerization of functional monomers in presence of a target analyte. This paper critically reviews and discusses the recent progress in MIP-based electrochemical sensors for food safety. A brief introduction on MIPs and electrochemical sensors is given; followed by a discussion of the recent achievements for various MIPs-based electrochemical sensors for food contaminants analysis. Both electropolymerization and chemical synthesis of MIP-based electrochemical sensing are discussed as well as the relevant applications of MIPs used in sample preparation and then coupled to electrochemical analysis. Future perspectives and challenges have been eventually given.

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Section: Application Of Mips In Sample Preparation For Food Safety Analysismentioning

confidence: 99%

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

et al. 2021

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“…Even more complicated samples like shrimp only endured centrifugation and LLE following grinding 104 . There are a few works that use magnetic MIPs, 36,40,109 it is an ingenious way of enhancing analyte extraction from complex samples 24,33,120,143,144 …”

Section: Analytes and Samplesmentioning

confidence: 99%

Employing molecularly imprinted polymers in the development of electroanalytical methodologies for antibiotic determination

Benachio

Lobato

Gonçalves

2020

J of Molecular Recognition

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Antibiotics, although being amazing compounds, need to be monitored in the environment and foodstuff. This is primarily to prevent the development of antibiotic resistance that may make them ineffective. Unsurprisingly, advances in analyticalsciences that can improve their determination are appreciated. Electrochemical techniques are known for their simplicity, sensitivity, portability and low‐cost; however, they are often not selective enough without recurring to a discriminating element like an antibody. Molecular imprinting technology aims to create artificial tissues mimicking antibodies named molecularly imprinted polymers (MIPs), these retain the advantages of selectivity but without the typical disadvantages of biological material, like limited shelf‐life and high cost. This manuscript aims to review all analytical methodologies for antibiotics, using MIPs, where the detection technique is electrochemical, like differential pulse voltammetry (DPV), square‐wave voltammetry (SWV) or electrochemical impedance spectroscopy (EIS). MIPs developed by electropolymerization (e‐MIPs) were applied in about 60 publications and patents found in the bibliographic search, while MIPs developed by other polymerization techniques, like temperature assisted (“bulk”) or photopolymerization, were limited to around 40. Published works covered the electroanalysis of a wide range of different antibiotics (β‐lactams, tetracyclines, quinolones, macrolides, aminoglycosides, among other), in a wide range of matrices (food, environmental and biological).

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“…Molecularly imprinted polymers (MIPs) were imagined as a lab-made alternative to biological receptors, imitating antibodies [9], MIPs have tailor-made selective recognition sites for selected molecules [10][11][12]. These biomimetic polymers are obtained by polymerization, a process in which the building monomers are polymerized around a target template (generally, the aimed analyte).…”

Section: /20mentioning

confidence: 99%

Electrochemical sensing of the thyroid hormone thyronamine (T0AM) via molecular imprinted polymers (MIPs)

Pacheco

Rebelo

Cagide

et al. 2019

Talanta

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Recent studies have shown that besides the well-known T 3 (triiodothyronine) and T 4 (thyroxine) there might be other important thyroid hormones, in particular T 0 AM (thyronamine) and T 1 AM (3-iodothyronamine). The absence of a large number of studies showing their precise importance might be explained by the limited number of analytical methodologies available. This work aims to show an electroanalytical alternative making use of electropolymerized molecularly imprinted polymer (MIPs). The MIPs' polymerization is performed on the surface of screen-printed carbon electrodes (SPCEs), using 4-aminobenzoic acid (4-ABA) as the building and functional monomer and the analyte T 0 AM as the template. The step-by-step construction of the SPCE-MIP sensor was studied by cyclic voltammetry (CV) and by electrochemical impedance spectroscopy (EIS). After optimization, by means of square-wave voltammetry, the SPCE-MIP showed suitable selectivity (in comparison with other thyroid hormones and catechol amines), repeatability (intraday of 3.9%), a linear range up to 10 μmol L-1 (0.23 x 10 3 μg dL-1) with an r 2 of 0.998 and a limit of 2/20 detection (LOD) and quantification (LOQ) of 0.081 and 0.27 μmol L-1 (1.9 and 6.2 μg dL-1), respectively.

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Electrochemical sensing using magnetic molecularly imprinted polymer particles previously captured by a magneto-sensor

Cited by 32 publications

References 44 publications

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

Employing molecularly imprinted polymers in the development of electroanalytical methodologies for antibiotic determination

Electrochemical sensing of the thyroid hormone thyronamine (T0AM) via molecular imprinted polymers (MIPs)

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