Applications of Electronic Nose (E-Nose) and Electronic Tongue (E-Tongue) in Food Quality: 2nd Edition

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Applied Chemical Sensors".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 507

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Guest Editor
BioEcoUVa, Universidad de Valladolid, 47002 Valladolid, Spain
Interests: fabrication of electrochemical sensors and biosensors inspired in nanomaterials; (bio)electronic tongues applied in food analysis; thin films and nanotechnology: langmuir, layer-by-layer, spincoating; electrodeposition of coatings; corrosion and mechanical properties of materials of industrial interest
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Special Issue Information

Dear Colleagues,

The concepts of electronic tongues (e-tongues) and electronic noses (e-noses) have developed rapidly in recent years due to their vast potential. They are based on electrochemical sensors combined with multivariate data analysis. The development of new analytical methods to characterize food is of vital importance for improving current quality and safety control systems. E-tongues and e-noses are holistic systems that provide global and qualitative information about samples. However, if the data matrix obtained by such multisensor systems is analyzed with adequate chemometric processing tools, descriptive or predictive information about specific parameters can also be extracted. Moreover, biosensors have been successfully implemented in these systems to develop bioelectronic devices. The electrochemical sensors used in these systems must incorporate appropriate electroactive and/or sensing materials that can interact with compounds of interest in the food industry. Some candidates for this task include conducting polymers, metal nanoparticles, metal oxide nanoparticles, porphyrins, phthalocyanines, and/or enzymes. In this context, nanotechnology can play an important role in manufacturing nanostructured sensors through various surface modification techniques.

This Special Issue focuses on recent research activities in the field of electronic tongues and noses for food analysis. Authors are encouraged to submit suitable articles/reviews addressing innovations in the field of electrochemical sensors/biosensors; novel electronic devices for food quality control; lab-on-chip devices; microsystems for food analysis; new electrocatalytic materials for sensing units; advanced fabrication processes based on nanotechnology; and in situ systems for food quality control, among other applications in foodstuff analysis.

Dr. Celia García-Hernández
Guest Editor

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Keywords

  • electronic tongues
  • electronic noses
  • food analysis
  • food quality and safety
  • electrochemical sensors
  • electrochemical biosensors
  • nanostructured sensors for food analysis

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Published Papers (1 paper)

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16 pages, 5740 KB  
Article
Assessment of Cooked Meatballs’ Edibility Using Calibrated MOS Sensors and Microbiological Validation
by Luigi Masi, Revathy Gurusamy, Daniel Garcia-Romeo, Andreas Schütze, Rafael Pagán and Christian Bur
Chemosensors 2026, 14(7), 148; https://doi.org/10.3390/chemosensors14070148 - 30 Jun 2026
Viewed by 278
Abstract
Food waste is often driven by consumer uncertainty about the spoilage of stored food, especially for cooked meal leftovers where microbial growth is the main concern. We analyzed whether metal oxide semiconductor (MOS) gas sensors placed inside ordinary food containers can monitor the [...] Read more.
Food waste is often driven by consumer uncertainty about the spoilage of stored food, especially for cooked meal leftovers where microbial growth is the main concern. We analyzed whether metal oxide semiconductor (MOS) gas sensors placed inside ordinary food containers can monitor the edibility of leftovers, specifically cooked meatballs. Sensors were operated using temperature cycling to enhance selectivity, and cycle-aligned features were extracted. A prior calibration campaign produced information used to map cycle-aligned features into estimated gas concentrations for relevant VOCs. Total viable counts, which represent the growth of total number of spoilage microorganisms, were analyzed on days 0, 5 and 7 to determine the food’s freshness. Both the raw sensor features and the calibration-derived gas concentration estimates were analyzed with principal component analysis (PCA) and evaluated with a leave-one-sensor-out (LOSO) binary classifier for multiple food containers. PCA on the calibrated gas estimates revealed a dominant axis that consistently tracks food degradation over time across various containers. LOSO classification accuracy improved from 81.7% using raw sensor features to 87.8% using calibrated gas concentration estimates. These findings represent a proof of principle that calibrated MOS sensor systems can robustly support in situ edibility assessment for cooked food. Full article
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