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Review

Optical Screening Methods for Pesticide Residue Detection in Food Matrices: Advances and Emerging Analytical Trends

Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6—Dejvice, 166 28 Prague, Czech Republic
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Foods 2021, 10(1), 88; https://doi.org/10.3390/foods10010088
Received: 15 November 2020 / Revised: 23 December 2020 / Accepted: 25 December 2020 / Published: 5 January 2021
(This article belongs to the Special Issue Novel Analytical Methods in Food Analysis)
Pesticides have been extensively used in agriculture to protect crops and enhance their yields, indicating the need to monitor for their toxic residues in foodstuff. To achieve that, chromatographic methods coupled to mass spectrometry is the common analytical approach, combining low limits of detection, wide linear ranges, and high accuracy. However, these methods are also quite expensive, time-consuming, and require highly skilled personnel, indicating the need to seek for alternatives providing simple, low-cost, rapid, and on-site results. In this study, we critically review the available screening methods for pesticide residues on the basis of optical detection during the period 2016–2020. Optical biosensors are commonly miniaturized analytical platforms introducing the point-of-care (POC) era in the field. Various optical detection principles have been utilized, namely, colorimetry, fluorescence (FL), surface plasmon resonance (SPR), and surface enhanced Raman spectroscopy (SERS). Nanomaterials can significantly enhance optical detection performance and handheld platforms, for example, handheld SERS devices can revolutionize testing. The hyphenation of optical assays to smartphones is also underlined as it enables unprecedented features such as one-click results using smartphone apps or online result communication. All in all, despite being in an early stage facing several challenges, i.e., long sample preparation protocols or interphone variation results, such POC diagnostics pave a new road into the food safety field in which analysis cost will be reduced and a more intensive testing will be achieved. View Full-Text
Keywords: pesticide residues; optical detection; screening methods; point-of-care diagnostics; smartphones; biosensors; bioassays; food pesticide residues; optical detection; screening methods; point-of-care diagnostics; smartphones; biosensors; bioassays; food
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MDPI and ACS Style

Tsagkaris, A.S.; Pulkrabova, J.; Hajslova, J. Optical Screening Methods for Pesticide Residue Detection in Food Matrices: Advances and Emerging Analytical Trends. Foods 2021, 10, 88. https://doi.org/10.3390/foods10010088

AMA Style

Tsagkaris AS, Pulkrabova J, Hajslova J. Optical Screening Methods for Pesticide Residue Detection in Food Matrices: Advances and Emerging Analytical Trends. Foods. 2021; 10(1):88. https://doi.org/10.3390/foods10010088

Chicago/Turabian Style

Tsagkaris, Aristeidis S., Jana Pulkrabova, and Jana Hajslova. 2021. "Optical Screening Methods for Pesticide Residue Detection in Food Matrices: Advances and Emerging Analytical Trends" Foods 10, no. 1: 88. https://doi.org/10.3390/foods10010088

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