Bioelectronic Tongues Employing Electrochemical Biosensors

Valle, Manel del

doi:10.1007/11663_2016_2

Cited by 18 publications

(12 citation statements)

References 81 publications

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“…Usually, electronic tongue systems are built from few to dozens of sensors of a single type, the most common being potentiometric and voltammetric [ 18 ]. Even though both are electrochemical, voltammetry on the contrary to potentiometry involves the flow of a current between the electrodes and thus in most cases results in more complex data.…”

Section: Sensors Types and The Resulting Datamentioning

confidence: 99%

Electronic Tongue—A Tool for All Tastes?

et al. 2017

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Electronic tongue systems are traditionally used to analyse: food products, water samples and taste masking technologies for pharmaceuticals. In principle, their applications are almost limitless, as they are able to almost completely reduce the impact of interferents and can be applied to distinguish samples of extreme complexity as for example broths from different stages of fermentation. Nevertheless, their applications outside the three principal sample types are, in comparison, rather scarce. In this review, we would like to take a closer look on what are real capabilities of electronic tongue systems, what can be achieved using mixed sensor arrays and by introduction of biosensors or molecularly imprinted polymers in the matrix. We will discuss future directions both in the sense of applications as well as system development in the ever-growing trend of low cost analysis.

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Section: Sensors Types and The Resulting Datamentioning

confidence: 99%

Electronic Tongue—A Tool for All Tastes?

et al. 2017

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“…Such an approach was first reported in 1985, when Otto and Thomas attempted the determination of free metal ions with an array of non-specific ISEs, and demonstrated the advantages that could be obtained from the use of partial least squares regression (PLS) in comparison to ordinary least squares regression (OLS) [101]. A few years later, the same approach was employed to improve the performance of biosensors, in what has been referred to as bioelectronic tongue (BioET) [102,103].…”

Section: Conclusion and Future Trendsmentioning

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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“…For example, the sensitivity of laccase, tyrosinase and aldehyde dehydrogenase enzymes to several DTFs and other inhibitors can be exploited to develop screening-type systems, alerting on possibly contaminated samples that should be analyzed further by standard methods. Alternatively, sensors arrays such as bioelectronic tongues including several enzymes with different susceptibilities to DTFs, coupled with chemometrics for data analysis can be envisaged for the selective detection of specific compounds, similar to other devices described in literature [ 116 ].…”

Section: Advances In Dtfs Detectionmentioning

confidence: 99%

Advances in the Detection of Dithiocarbamate Fungicides: Opportunities for Biosensors

et al. 2020

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Dithiocarbamate fungicides (DTFs) are widely used to control various fungal diseases in crops and ornamental plants. Maximum residual limits in the order of ppb-ppm are currently imposed by legislation to prevent toxicity problems associated with excessive use of DTFs. The specific analytical determination of DTFs is complicated by their low solubility in water and organic solvents. This review summarizes the current analytical procedures used for the analysis of DTF, including chromatography, spectroscopy, and sensor-based methods and discusses the challenges related to selectivity, sensitivity, and sample preparation. Biosensors based on enzymatic inhibition demonstrated potential as analytical tools for DTFs and warrant further research, considering novel enzymes from extremophilic sources. Meanwhile, Raman spectroscopy and various sensors appear very promising, provided the selectivity issues are solved.

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Bioelectronic Tongues Employing Electrochemical Biosensors

Cited by 18 publications

References 81 publications

Electronic Tongue—A Tool for All Tastes?

Electronic Tongue—A Tool for All Tastes?

Molecularly imprinted polymers - towards electrochemical sensors and electronic tongues

Advances in the Detection of Dithiocarbamate Fungicides: Opportunities for Biosensors

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