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Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination

Olive oil is a basic element of the Mediterranean diet and a key product for the economies of the Mediterranean countries. Thus, there is an added incentive in the olive oil business for fraud through practices like adulteration and mislabeling. In the present work, Laser Induced Breakdown Spectrosc...

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Autores principales: Gyftokostas, Nikolaos, Stefas, Dimitrios, Kokkinos, Vasileios, Bouras, Christos, Couris, Stelios
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970888/
https://www.ncbi.nlm.nih.gov/pubmed/33686131
http://dx.doi.org/10.1038/s41598-021-84941-z
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author Gyftokostas, Nikolaos
Stefas, Dimitrios
Kokkinos, Vasileios
Bouras, Christos
Couris, Stelios
author_facet Gyftokostas, Nikolaos
Stefas, Dimitrios
Kokkinos, Vasileios
Bouras, Christos
Couris, Stelios
author_sort Gyftokostas, Nikolaos
collection PubMed
description Olive oil is a basic element of the Mediterranean diet and a key product for the economies of the Mediterranean countries. Thus, there is an added incentive in the olive oil business for fraud through practices like adulteration and mislabeling. In the present work, Laser Induced Breakdown Spectroscopy (LIBS) assisted by machine learning is used for the classification of 139 virgin olive oils in terms of their geographical origin. The LIBS spectra of these olive oil samples were used to train different machine learning algorithms, namely LDA, ERTC, RFC, XGBoost, and to assess their classification performance. In addition, the variable importance of the spectral features was calculated, for the identification of the most important ones for the classification performance and to reduce their number for the algorithmic training. The algorithmic training was evaluated and tested by means of classification reports, confusion matrices and by external validation procedure as well. The present results demonstrate that machine learning aided LIBS can be a powerful and efficient tool for the rapid authentication of the geographic origin of virgin olive oil.
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spelling pubmed-79708882021-03-19 Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination Gyftokostas, Nikolaos Stefas, Dimitrios Kokkinos, Vasileios Bouras, Christos Couris, Stelios Sci Rep Article Olive oil is a basic element of the Mediterranean diet and a key product for the economies of the Mediterranean countries. Thus, there is an added incentive in the olive oil business for fraud through practices like adulteration and mislabeling. In the present work, Laser Induced Breakdown Spectroscopy (LIBS) assisted by machine learning is used for the classification of 139 virgin olive oils in terms of their geographical origin. The LIBS spectra of these olive oil samples were used to train different machine learning algorithms, namely LDA, ERTC, RFC, XGBoost, and to assess their classification performance. In addition, the variable importance of the spectral features was calculated, for the identification of the most important ones for the classification performance and to reduce their number for the algorithmic training. The algorithmic training was evaluated and tested by means of classification reports, confusion matrices and by external validation procedure as well. The present results demonstrate that machine learning aided LIBS can be a powerful and efficient tool for the rapid authentication of the geographic origin of virgin olive oil. Nature Publishing Group UK 2021-03-08 /pmc/articles/PMC7970888/ /pubmed/33686131 http://dx.doi.org/10.1038/s41598-021-84941-z Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Gyftokostas, Nikolaos
Stefas, Dimitrios
Kokkinos, Vasileios
Bouras, Christos
Couris, Stelios
Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title_full Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title_fullStr Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title_full_unstemmed Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title_short Laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
title_sort laser-induced breakdown spectroscopy coupled with machine learning as a tool for olive oil authenticity and geographic discrimination
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970888/
https://www.ncbi.nlm.nih.gov/pubmed/33686131
http://dx.doi.org/10.1038/s41598-021-84941-z
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