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Sensing Platforms for Food Quality and Safety Monitoring

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 2127

Special Issue Editor


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Guest Editor
Department of Analytical Chemistry, Director Doctoral School of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd., 030018 Bucharest, Romania
Interests: sensors and biosensors addressing current emerging problems of clinical, food and environmental importance; bioanalytical chemistry focusing on investigations of basic biochemical mechanisms at bio-interfaces; biomimetic materials and artificial receptors
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Special Issue Information

Dear Colleagues,

This Special Issue addresses the current high demand for affordable devices that can be used by local communities in developing regions to improve food safety. Research in the field of sensors is continually developing, and its evolution is focused on the production of sensors for devices that allow fast, accurate, and on-site detection of food pathogens and contaminants such as carcinogens, toxins, and pesticides. Today, research in this area exploits nanotechnologies, new sensing materials, and new immobilization procedures for bio/receptors to amplify signals and improve their stability. A new generation of sensors with simple configurations and improved analytical performance are being designed in order to provide sensors able to perform measurements at the point of need.

For this Special Issue, authors are invited to submit articles related to the integration of different techniques that have led to the development of sensors and biosensors for various applications through selected examples of agri-food control, on-site detection, and monitoring of toxic compounds. Further, research addressing various microfluidics/electronics/design strategies for sensors and biosensors, sample preparation, fluid-handling techniques, data collection, and analysis challenges are welcome. Both research papers and review articles will be considered.

Prof. Dr. Camelia Bala
Guest Editor

Manuscript Submission Information

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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. Sensors is an international peer-reviewed open access semimonthly 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 2600 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.

Published Papers (1 paper)

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20 pages, 4425 KiB  
Article
Voltammetric Sensor Based on the Poly(p-aminobenzoic Acid) for the Simultaneous Quantification of Aromatic Aldehydes as Markers of Cognac and Brandy Quality
by Guzel Ziyatdinova, Tatyana Antonova and Rustam Davletshin
Sensors 2023, 23(4), 2348; https://doi.org/10.3390/s23042348 - 20 Feb 2023
Viewed by 1405
Abstract
Cognac and brandy quality control is an actual topic in food analysis. Aromatic aldehydes, particularly syringaldehyde and vanillin, are one of the markers used for these purposes. Therefore, simple and express methods for their simultaneous determination are required. The voltammetric sensor based on [...] Read more.
Cognac and brandy quality control is an actual topic in food analysis. Aromatic aldehydes, particularly syringaldehyde and vanillin, are one of the markers used for these purposes. Therefore, simple and express methods for their simultaneous determination are required. The voltammetric sensor based on the layer-by-layer combination of multi-walled carbon nanotubes (MWCNTs) and electropolymerized p-aminobenzoic acid (p-ABA) provides full resolution of the syringaldehyde and vanillin oxidation peaks. Optimized conditions of p-ABA electropolymerization (100 µM monomer in Britton–Robinson buffer pH 2.0, twenty cycles in the polarization window of −0.5 to 2.0 V with a potential scan rate of 100 mV·s−1) were found. The poly(p-ABA)-based electrode was characterized by scanning electron microscopy (SEM), cyclic voltammetry, and electrochemical impedance spectroscopy (EIS). Electrooxidation of syringaldehyde and vanillin is an irreversible two-electron diffusion-controlled process. In the differential pulse mode, the sensor allows quantification of aromatic aldehydes in the ranges of 0.075–7.5 and 7.5–100 µM for syringaldehyde and 0.50–7.5 and 7.5–100 µM for vanillin with the detection limits of 0.018 and 0.19 µM, respectively. The sensor was applied to cognac and brandy samples and compared to chromatography. Full article
(This article belongs to the Special Issue Sensing Platforms for Food Quality and Safety Monitoring)
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