Special Issue "Application of Electrochemical Devices in Food Analysis"

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "C:Chemistry".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 795

Special Issue Editor

Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman P.O. Box 76169-13555, Iran
Interests: electrochemistry; nanochemistry; drug analysis; environmental analysis; food analysis

Special Issue Information

Dear Colleagues,

Food analysis is crucial for food quality and safety control. Studies in food analysis are focused mainly on the nutritional value of the final product, food freshness, supplementary materials added or toxic components spontaneously occurring in the product or during the food processing, and the effect of processing or storage on food composition, texture, and microbiological quality. Food analysis has been considered a great, complicated challenge. In this regard, food analysis should be seriously considered, and detection procedures continually improved. In comparison with conventional techniques in food analysis such as chromatographic or spectrometric methods, electrochemical (bio)sensors possess some incontestable benefits. One of the most sensitive, simplest, and most selective type of chemical sensors are electrochemical (bio)sensors that have been widely used in food analysis. Electrochemical (bio)sensors have been proposed as tools with the ability to sense physicochemical or biological alterations in analytes and convert them into measurable voltammetry, amperometry, and impedance electrochemical signals. Electrochemical sensors operate via the redox reaction of analytes over the working electrode surface and produce an electrical signal that is proportional to the analyte concentration. Therefore, analytes in food with electrochemical operations may be immediately sensed by electrochemical sensors.

The aim of this collection is to present a comprehensive overview of the current state of research on the application of electrochemical devices in food analysis.

Dr. Somayeh Tajik
Guest Editor

Manuscript Submission Information

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  • electrochemistry
  • food analysis
  • modified electrodes
  • nanomaterials

Published Papers (1 paper)

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14 pages, 2879 KiB  
ZnO Hollow Quasi-Spheres Modified Screen-Printed Graphite Electrode for Determination of Carmoisine
Micromachines 2023, 14(7), 1433; https://doi.org/10.3390/mi14071433 - 16 Jul 2023
Viewed by 579
Food colorants are important in food selection because they improve the gastronomic appeal of foods by improving their aesthetic appeal. However, after prolonged use, many colorants turn toxic and cause medical problems. A synthetic azo-class dye called carmoisine gives meals a red color. [...] Read more.
Food colorants are important in food selection because they improve the gastronomic appeal of foods by improving their aesthetic appeal. However, after prolonged use, many colorants turn toxic and cause medical problems. A synthetic azo-class dye called carmoisine gives meals a red color. Therefore, the carmoisine determination in food samples is of great importance from the human health control. The current work was developed to synthesis ZnO hollow quasi-spheres (ZnO HQSs) to prepare a new electrochemical carmoisine sensor that is sensitive. Field emission-scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) have been used to analyze the properties of prepared ZnO HQSs. A screen-printed graphite electrode (SPGE) surface was modified with ZnO HQSs to prepare the ZnO HQSs-SPGE sensor. For carmoisine detection, the ZnO HQSs-SPGE demonstrated an appropriate response and notable electrocatalytic activities. The carmoisine electro-oxidation signal was significantly stronger on the ZnO HQSs-SPGE surface compared to the bare SPGE. Cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CHA), and differential pulse voltammetry (DPV) have been utilized to investigate the suggested protocol. The DPV results revealed an extensive linear association between variable carmoisine concentrations and peak current that ranged from 0.08 to 190.0 µM, with a limit of detection (LOD) as narrow as 0.02 µM. The ZnO HQSs-SPGE’s ability to detect carmoisine in real samples proved the sensor’s practical application. Full article
(This article belongs to the Special Issue Application of Electrochemical Devices in Food Analysis)
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