Excitation-emission matrix spectroscopy coupled with chemometrics for monitoring ozonation of olive oil and olive pomace oil
| dc.contributor.author | Domínguez-Lacueva, Paula | |
| dc.contributor.author | Sikorska, Ewa | |
| dc.contributor.author | Cantalejo Díez, María Jesús | |
| dc.contributor.department | Institute on Innovation and Sustainable Development in Food Chain - ISFOOD | en |
| dc.date.accessioned | 2025-04-08T11:27:53Z | |
| dc.date.available | 2025-04-08T11:27:53Z | |
| dc.date.issued | 2025-02-07 | |
| dc.date.updated | 2025-04-08T11:24:04Z | |
| dc.description.abstract | The effects of ozonation on the Total Polyphenol Content (TPC) of olive oils remain largely unexplored, despite the significant role that polyphenols play in enhancing the health benefits and quality of these oils. Understanding how ozone treatment impacts phenolic compounds is vital, especially considering the documented negative effects of thermal and photochemical oxidation on TPC. The aim of this study was to explore the use of fluorescence spectroscopy combined with chemometrics to develop multivariate models for monitoring the effects of ozonation on TPC and key physicochemical parameters such as the peroxide index (PI), acidity index (AI), iodine value (IV) and viscosity (V) in both, virgin and pomace olive oils. Parallel factor analysis and principal component analysis of fluorescence excitation¿emission matrices (EEMs) of ozonated olive oils revealed that as the ozonation process progressed, TPC and fluorescence emission decreased. And, at the same time, ozonation increased the values of oxidation indicators such as PI, AI, viscosity and intensity of the Rayleigh scattering signal. PLS models based on analysis of unfolded EEMs exhibited good predictive performance for PI (R2 = 0.822; RPD > 2.5), and moderate for TPC and V (R2 = 0.792 and 0.753; RPD > 2). In summary, we demonstrated the feasibility of EEM spectroscopy for monitoring the ozonation process. The use of this method can ease the characterization of ozonated olive oils and, additionally, make the analysis more sustainable. | en |
| dc.description.sponsorship | This research work has been financially supported by the Government of Navarre (Spain) in the framework of the PROMETEA project (0011-1411-2022-000024); Open Access funding by Asociación Allotarra de Agricultura y Ganadería Ecológica in Navarre. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Domínguez-Lacueva, P., Sikorska, E., Cantalejo-Díez, M. J. (2025). Excitation-emission matrix spectroscopy coupled with chemometrics for monitoring ozonation of olive oil and olive pomace oil. Analytical Methods, 17(8), 1860-1869. https://doi.org/10.1039/D4AY02267J. | |
| dc.identifier.doi | 10.1039/D4AY02267J | |
| dc.identifier.issn | 1759-9679 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/53910 | |
| dc.language.iso | eng | |
| dc.publisher | Royal Society of Chemistry | |
| dc.relation.ispartof | Analytical Methods, 17(8), 1860-1869 | |
| dc.relation.projectID | info:eu-repo/grantAgreement/Gobierno de Navarra//0011-1411-2022-000024/ | |
| dc.relation.publisherversion | https://doi.org/10.1039/D4AY02267J | |
| dc.rights | This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc/3.0/ | |
| dc.subject | Ozonation | en |
| dc.subject | Total Polyphenol Content (TPC) | en |
| dc.subject | Olive oils | en |
| dc.subject | Fluorescence spectroscopy | en |
| dc.subject | Chemometrics | en |
| dc.subject | Excitation-emission matrices (EEMs) | en |
| dc.title | Excitation-emission matrix spectroscopy coupled with chemometrics for monitoring ozonation of olive oil and olive pomace oil | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
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