Varietal authentication of virgin olive oil: Proving the efficiency of sesquiterpene fingerprinting for Mediterranean Arbequina oils
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Author
Torres-Cobos, Berta
Quintanilla-Casas, Beatriz
Romero, Agustí
Alonso-Salces, Rosa M.
Gallina-Toschi, Tullia
Bendini, Alessandra
Guardiola, Francesc
Tres, Alba
Vichi, Stefania
Publication date
2021-04-28ISSN
0956-7135
Abstract
Virgin olive oil (VOO) is a highly appreciated product fundamental in the Mediterranean diet. Since its sensory attributes are greatly influenced by the olive cultivar, the varietal authentication of VOOs is needed to protect consumers from misleading information. The present study aims to evaluate the suitability of sesquiterpene hydrocarbon (SH) fingerprint as VOO cultivar marker beyond geographical, agronomical and processing con ditions. The study was mainly focused on Mediterranean Arbequina oils. SH profile of more than 400 VOOs from 6 counties and 38 different cultivars and coupages was analysed by Headspace Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry (HS-SPME-GC-MS). Partial Least Square-Discriminant Analysis (PLS-DA) classification models were built with the aligned chromatograms. A binary PLS-DA model was built to distinguish ‘Arbequina’ oils from those of other cultivars (non-‘Arbequina’ class) and it was externally validated. The results of the external validation showed a 95.1% of overall correct classification confirming the suitability of SH fingerprint as a screening method for the authentication of Arbequina VOO. Also, the discrimination capacity of SH fingerprinting to authenticate VOOs from other cultivars was preliminary explored and promising results were obtained.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
663/664 - Food and nutrition. Enology. Oils. Fat
Pages
8
Publisher
Elsevier
Is part of
Food Control
Citation
Torres-Cobos, Berta, Beatriz Quintanilla-Casas, Agustí Romero, Antonia Ninot, Rosa M. Alonso-Salces, Tullia Gallina Toschi, Alessandra Bendini, Francesc Guardiola, Alba Tres, and Stefania Vichi. 2021. "Varietal Authentication Of Virgin Olive Oil: Proving The Efficiency Of Sesquiterpene Fingerprinting For Mediterranean Arbequina Oils". Food Control 128: 108200. doi:10.1016/j.foodcont.2021.108200.
Grant agreement number
EC/H2020/635690/EU/Advanced solutions for assuring the overall authenticity and quality of olive oil/OLEUM
Program
Fructicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2850]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/