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Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System
Laser-induced breakdown spectroscopy (LIBS) is an atomic-emission spectroscopy technique that employs a focused laser beam to produce microplasma. Although LIBS was designed for applications in the field of materials science, it has lately been proposed as a method for the compositional analysis of...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9857504/ https://www.ncbi.nlm.nih.gov/pubmed/36673494 http://dx.doi.org/10.3390/foods12020402 |
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author | Wu, Xi Shin, Sungho Gondhalekar, Carmen Patsekin, Valery Bae, Euiwon Robinson, J. Paul Rajwa, Bartek |
author_facet | Wu, Xi Shin, Sungho Gondhalekar, Carmen Patsekin, Valery Bae, Euiwon Robinson, J. Paul Rajwa, Bartek |
author_sort | Wu, Xi |
collection | PubMed |
description | Laser-induced breakdown spectroscopy (LIBS) is an atomic-emission spectroscopy technique that employs a focused laser beam to produce microplasma. Although LIBS was designed for applications in the field of materials science, it has lately been proposed as a method for the compositional analysis of agricultural goods. We deployed commercial handheld LIBS equipment to illustrate the performance of this promising optical technology in the context of food authentication, as the growing incidence of food fraud necessitates the development of novel portable methods for detection. We focused on regional agricultural commodities such as European Alpine-style cheeses, coffee, spices, balsamic vinegar, and vanilla extracts. Liquid examples, including seven balsamic vinegar products and six representatives of vanilla extract, were measured on a nitrocellulose membrane. No sample preparation was required for solid foods, which consisted of seven brands of coffee beans, sixteen varieties of Alpine-style cheeses, and eight different spices. The pre-processed and standardized LIBS spectra were used to train and test the elastic net-regularized multinomial classifier. The performance of the portable and benchtop LIBS systems was compared and described. The results indicate that field-deployable, portable LIBS devices provide a robust, accurate, and simple-to-use platform for agricultural product verification that requires minimal sample preparation, if any. |
format | Online Article Text |
id | pubmed-9857504 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98575042023-01-21 Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System Wu, Xi Shin, Sungho Gondhalekar, Carmen Patsekin, Valery Bae, Euiwon Robinson, J. Paul Rajwa, Bartek Foods Article Laser-induced breakdown spectroscopy (LIBS) is an atomic-emission spectroscopy technique that employs a focused laser beam to produce microplasma. Although LIBS was designed for applications in the field of materials science, it has lately been proposed as a method for the compositional analysis of agricultural goods. We deployed commercial handheld LIBS equipment to illustrate the performance of this promising optical technology in the context of food authentication, as the growing incidence of food fraud necessitates the development of novel portable methods for detection. We focused on regional agricultural commodities such as European Alpine-style cheeses, coffee, spices, balsamic vinegar, and vanilla extracts. Liquid examples, including seven balsamic vinegar products and six representatives of vanilla extract, were measured on a nitrocellulose membrane. No sample preparation was required for solid foods, which consisted of seven brands of coffee beans, sixteen varieties of Alpine-style cheeses, and eight different spices. The pre-processed and standardized LIBS spectra were used to train and test the elastic net-regularized multinomial classifier. The performance of the portable and benchtop LIBS systems was compared and described. The results indicate that field-deployable, portable LIBS devices provide a robust, accurate, and simple-to-use platform for agricultural product verification that requires minimal sample preparation, if any. MDPI 2023-01-14 /pmc/articles/PMC9857504/ /pubmed/36673494 http://dx.doi.org/10.3390/foods12020402 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wu, Xi Shin, Sungho Gondhalekar, Carmen Patsekin, Valery Bae, Euiwon Robinson, J. Paul Rajwa, Bartek Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title | Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title_full | Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title_fullStr | Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title_full_unstemmed | Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title_short | Rapid Food Authentication Using a Portable Laser-Induced Breakdown Spectroscopy System |
title_sort | rapid food authentication using a portable laser-induced breakdown spectroscopy system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9857504/ https://www.ncbi.nlm.nih.gov/pubmed/36673494 http://dx.doi.org/10.3390/foods12020402 |
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