Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Hassan, Amal H.A.; Sappia, Luciano D.; Moura, Silio Lima; Ali, Fatma; Moselhy, Walaa A.; Sotomayor, Marı́a Del Pilar Taboada; Pividori, María Isabel

doi:10.1016/j.talanta.2018.10.066

Cited by 40 publications

(16 citation statements)

References 30 publications

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“…The MCPE‐MMIP presented higher current intensity in E2 oxidation, 2,3 fold higher, compared to the other configurations (Figure 3A). This result is due to the effect of pre‐concentration of the analyte by the magnetic particles together with their high surface area and the adsorption capacity of MMIP [41, 42]. MMIP has also several selective sites, enabling a better interaction with analyte, this interaction results in a more sensitive method.…”

Section: Resultsmentioning

confidence: 99%

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

et al. 2020

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The analysis of 17β‐estradiol with high sensitivity and selectivity is extremely relevant to control the impacts that this compound can cause on health and the environment. Thus, we describe the development and application of a magneto carbon paste electrode based on magnetic molecularly imprinted polymer (MCPE‐MMIP) for determination of 17β‐estradiol. The analyte adsorbed on the MMIP was immobilized on the electrode surface by magnetic capture. The morphological and structural characterization of the obtained MMIP suggests that the material was effectively synthesized. MCPE‐MMIP showed an improvement in the sensitivity for 17β‐estradiol detection when compared to electrode configurations in the absence of this material. The optimum conditions (0.10 mol L−1 phosphate buffer pH 7.0) were reached by differential pulse adsorptive stripping voltammetry (DPAdSV), in which the method presented linearity ranged from 0.06 to 175 μmol L−1 with limits of detection and quantification of 0.02 and 0.06 μmol L−1, respectively. The proposed sensor was applied effectively in the analysis of 17β‐estradiol in river water and raw milk samples, exhibiting excellent recovery values (between 96.20 and 104 %), which were confirmed by HPLC analysis.

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Section: Resultsmentioning

confidence: 99%

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

et al. 2020

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“…For example, Hasan et al presented the development of a core-shell magnetic-MIP for the electrochemical sensing of histamine in fish samples (Fig. 9) [86]. The developed MIP demonstrated high selectivity as almost no interference was observed for the other three more common biogenic amines.…”

Section: Food Controlmentioning

confidence: 99%

“…9 Schematic illustration of the pre-concentration and electrochemical sensing of histamine based on the usage of a magnetic-MIP and a magnetic-GEC electrode. Reproduced with permission from Elsevier [86] the application itself, which can be extrapolated to other analytes.…”

Section: Clinical Diagnosticsmentioning

confidence: 99%

Molecularly imprinted polymers - towards electrochemical sensors and electronic tongues

2021

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Molecularly imprinted polymers (MIPs) are artificially synthesized materials to mimic the molecular recognition process of biological macromolecules such as substrate-enzyme or antigen-antibody. The combination of these biomimetic materials with electrochemical techniques has allowed the development of advanced sensing devices, which significantly improve the performance of bare or catalyst-modified sensors, being able to unleash new applications. However, despite the high selectivity that MIPs exhibit, those can still show some cross-response towards other compounds, especially with chemically analogous (bio)molecules. Thus, the combination of MIPs with chemometric methods opens the room for the development of what could be considered a new type of electronic tongues, i.e. sensor array systems, based on its usage. In this direction, this review provides an overview of the more common synthetic approaches, as well as the strategies that can be used to achieve the integration of MIPs and electrochemical sensors, followed by some recent examples over different areas in order to illustrate the potential of such combination in very diverse applications.

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“…Hassan et al [ 134 ] proposed the use of MagMIPs for the preconcentration of histamine in fish samples, followed by direct electrochemical readout of this biogenic amine from the surface of magneto-actuated electrodes. These MagMIPs were synthesized by the core-shell method using histamine as a template and 2-vinyl pyridine as a functional monomer.…”

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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Biomimetic magnetic sensor for electrochemical determination of scombrotoxin in fish

Cited by 40 publications

References 30 publications

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

Sensitive Determination of 17β‐Estradiol using a Magneto Sensor Based on Magnetic Molecularly Imprinted Polymer

Molecularly imprinted polymers - towards electrochemical sensors and electronic tongues

Molecularly Imprinted Polymers Combined with Electrochemical Sensors for Food Contaminants Analysis

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