Abstract
Electrochemical sensors and biosensors are analytical tools, which are in continuous development with the aim of generating new analytical devices which are more reliable, cheaper, faster, sensitive, selective, and robust than others. In matrices related to agroalimentary, environmental, or health systems, natural or synthetic compounds occur which fulfil specific roles; some of them (such as mycotoxins or herbicides) may possess harmful properties, and others (such as antioxidants) beneficial ones. This imposes a challenge to develop new tools and analytical methodologies for their detection and quantification. This review summarises different aspects related to the development of electrochemical sensors and biosensors carried out in Argentina in the last ten years for application in agroalimentary, environmental, and health fields. The discussion focuses on the construction and development of electroanalytical methodologies for the determination of mycotoxins, herbicides, and natural and synthetic antioxidants. Studies based on the use of different electrode materials modified with micro/nanostructures, functional groups, and biomolecules, complemented by the use of chemometric tools, are explored. Results of the latest reports from research groups in Argentina are presented. The main goals are highlighted.
Highlights
The increase in the world population has led to the development of a large number of substances of interest related to the main demands of the population, in the food and health industries and those derived from them
Electrochemical sensors/biosensors are presented as powerful analytical tools for the detection and quantification of these compounds related to agroalimentary, environmental, and health systems
This review aims to show on results of the development of electrochemical sensors/biosensors produced in Argentina in the last decade for the detection and quantification of compounds related to agroalimentary, environmental, and health systems
Summary
The increase in the world population has led to the development of a large number of substances of interest related to the main demands of the population, in the food and health industries and those derived from them. Due to the combination of the improved sensitivity of analytical methods and climate change, the occurrence above detectable levels reaches 60–80% of mycotoxin contamination of food crops [21] This point is relevant for countries whose economic activities are based on the production of cereals, seeds, oilseeds, fruits and vegetables, nuts, raisins, and spices, and manufactured products such as fruit juice, wine, and bakery products [22,23,24]. The development of sensitive and accurate methods for the detection and quantification of triazine herbicides is very important In this sense, electrochemical sensors/biosensors are presented as powerful analytical tools for the detection and quantification of these compounds related to agroalimentary, environmental, and health systems. Several analytical methods combining chemometric tools with electrochemical techniques have gained great attention to determine different analytes in complex matrices by using first-and second-order data, which allow to obtain a considerable improvement of the performance of a given electrochemical sensor
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