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Electrochem
Special Issues
Emerging Trends of Electrochemical Sensors in Food Analysis
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Emerging Trends of Electrochemical Sensors in Food Analysis

A special issue of Electrochem (ISSN 2673-3293).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 7883

Special Issue Editor

Dr. Ítala Marx

E-Mail Website
Guest Editor
Faculty of Pharmacy, University of Porto, Porto, Portugal
Interests: electrochemical sensor devices; chemometrics; bioactive compounds; olive oil; food chemistry; analytical chemistry

Special Issue Information

Dear Colleagues,

Electrochemical sensors are a class of chemical sensors in which an electrode is used as a transducer element in the presence of an analyte. Modern electrochemical sensors use several properties to detect various physical, chemical, or biological parameters. These devices, combined with chemometric tools, have experienced great advances in the past decades, being extensively used as useful alternative/complementary instruments to overcome the restrictions and limitations of traditional methods of analysis. High sensitivity and selectivity, quick response time, cost-effectiveness, and ease of application in situ/on-line are some advantages of electrochemical sensors which have great relevance for the food industry.

Electrochemical sensors and methods are developed as suitable tools for different applications, including bioprocess control, agriculture, the pharmaceutical industry, and, in particular, for food fields. Therefore, I invite manuscripts for this forthcoming Special Issue on all aspects pertinent to emerging trends and food applications of electrochemical sensors. Full papers, communications, and reviews are all welcome.

This Special Issue will focus on the application of electrochemical sensors in the food sector, including food and drink analysis, safety monitoring, authenticity, and technological process monitoring, among other applications in the field of food industry. New applications, challenges related to the electrochemical sensors approach, and future directions in the food area will also be well received for publication. 

I look forward to and welcome your participation in this Special Issue.

Dr. Ítala Marx
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electrochem is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemical sensor device
  • chemometrics
  • food safety monitoring
  • technological process monitoring
  • food authentication
  • sensory analysis

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Published Papers (3 papers)

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Editorial

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5 pages, 218 KiB  
Editorial
Emerging Trends of Electrochemical Sensors in Food Analysis
by Ítala M. G. Marx
Electrochem 2023, 4(1), 42-46; https://doi.org/10.3390/electrochem4010004 - 4 Feb 2023
Cited by 7 | Viewed by 2784
Abstract
Food quality and safety pose an increasing threat to human health worldwide [...] Full article
(This article belongs to the Special Issue Emerging Trends of Electrochemical Sensors in Food Analysis)

Research

Jump to: Editorial

12 pages, 2825 KiB  
Article
Heterostructure of Metal Oxides Integrated on a GCE for Estimation of H2O2 Capacity in Milk and Fruit Juice Samples
by Bongiwe Silwana and Mangaka Matoetoe
Electrochem 2023, 4(1), 56-67; https://doi.org/10.3390/electrochem4010006 - 10 Feb 2023
Viewed by 2227
Abstract
High levels of H2O2 in food can lead to oxidative stress. Which has been linked to a number of neurological diseases. Hence, its detection in beverages is essential. However, a complicated structure of the reaction medium of H2O [...] Read more.
High levels of H2O2 in food can lead to oxidative stress. Which has been linked to a number of neurological diseases. Hence, its detection in beverages is essential. However, a complicated structure of the reaction medium of H2O2 makes the detection procedure very difficult. For this reason, sensitive strategic methods are required. In this study, quantification of H2O2 in milk and apple juice has been obtained via the electrochemical sensing platform based on GCE/SiO-CeONPs. Scanning Electron Microscopy (SEM), Cyclic voltammetry(CV), and electron impedance spectroscopy(EIS) were employed to characterize the composite. The kinetics investigation of the sensor with H2O2 revealed an a quasi-reversible one -electron adsorption process. Under optimized conditions, the Differential Pulse Voltammetry (DPV) in 0.1 M Phosphate buffer (PB) pH 5.5 of the H2O2 displayed a peak at 0.13 V vs. Ag/AgCl with the detection limits of 0.0004 µM, linearity range of 0.01–0.08 µM. The observed LOD values of this method for real samples were calculated to be 0.006 µM and 0.007 µM with LOQ of 0.02 µM for milk and apple juice, respectively. The recovery of the analyte was from 92 to 99%. Furthermore, due to good selectivity and stability, the benefit of this sensor is its applicability in multiple fields. Full article
(This article belongs to the Special Issue Emerging Trends of Electrochemical Sensors in Food Analysis)
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15 pages, 3667 KiB  
Article
Electrochemical Digitization of Biological Fluids Samples
by Sergey V. Sokolkov
Electrochem 2022, 3(4), 653-667; https://doi.org/10.3390/electrochem3040043 - 9 Oct 2022
Viewed by 1947
Abstract
Digital medicine based on the integration of all medical data from a particular patient has become a reality today, thanks to information technology. Traditional medical examinations can be supplemented by assessment results of the oxidative-anti-oxidative (OAO) status of the body. Electrochemical sensors are [...] Read more.
Digital medicine based on the integration of all medical data from a particular patient has become a reality today, thanks to information technology. Traditional medical examinations can be supplemented by assessment results of the oxidative-anti-oxidative (OAO) status of the body. Electrochemical sensors are able to not only determine the integral indicators of the OAO system of the body but also to depict details of the processes occurring in the system. The main obstacle to the widespread use of electrochemical sensors in medical diagnostics is the extremely small amount of received information in comparison to the tens of thousands of known human diseases. The problem can be eliminated only by rethinking the purpose of electrochemical measurement within the framework of thermodynamics of information processes and information theory. In the information paradigm of electrochemical analysis of biological fluids, a sample is considered an electrochemical message created by a sensor. The purpose of electrochemical measurement is to obtain information in a volume sufficient to identify the sample composition within the range of possible concentrations of its components. The fundamentals of the thermodynamics of information processes are considered and conclusions that are of practical importance for the development of electrochemical sensors and analyzers are derived. It is shown that the potentiostatic control of the sensor is physically impacted by the electromechanical instability of the electrical double layer, which is the main source of sensor signal noise. Estimates of a minimum amount of analytical signal information required for the identification of a sample of known composition, such as a biological fluid, are provided. Examples of highly informative analytical signals for flowing and stationary samples are presented. Problems related to the visualization of such signals are noted. Full article
(This article belongs to the Special Issue Emerging Trends of Electrochemical Sensors in Food Analysis)
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