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Foods 2017, 6(11), 96; https://doi.org/10.3390/foods6110096

1H NMR and Multivariate Analysis for Geographic Characterization of Commercial Extra Virgin Olive Oil: A Possible Correlation with Climate Data

1
Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Plant Protection and Certification, via C.G. Bertero, 22, 00156 Roma, Italy
2
Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria (CREA), Research Centre for Engineering and Agro-Food Processing, via L. Petruzzi, 75, 65013 Città Sant’Angelo, Italy
3
Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali (Di.S.Te.B.A.), Università del Salento, Prov.Le Lecce-Monteroni, 73100 Lecce, Italy
4
Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria-Centro di Ricerca per l’Olivicoltura e l’Industria Olearia, Contrada Li Rocchi, 87036 Rende, Italy
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 2 October 2017 / Revised: 25 October 2017 / Accepted: 2 November 2017 / Published: 7 November 2017
(This article belongs to the Special Issue Olive Oil: Processing, Characterization, and Health Benefits)
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Abstract

1H Nuclear Magnetic Resonance (NMR) spectroscopy coupled with multivariate analysis has been applied in order to investigate metabolomic profiles of more than 200 extravirgin olive oils (EVOOs) collected in a period of over four years (2009–2012) from different geographic areas. In particular, commercially blended EVOO samples originating from different Italian regions (Tuscany, Sicily and Apulia), as well as European (Spain and Portugal) and non-European (Tunisia, Turkey, Chile and Australia) countries. Multivariate statistical analysis (Principal Component Analisys (PCA) and Orthogonal Partial Least Squares Discriminant Analysis (OPLS-DA)) applied on the NMR data revealed the existence of marked differences between Italian (in particular from Tuscany, Sicily and Apulia regions) and foreign (in particular Tunisian) EVOO samples. A possible correlation with available climate data has been also investigated. These results aim to develop a powerful NMR-based tool able to protect Italian olive oil productions. View Full-Text
Keywords: 1H NMR spectroscopy; EVOOs geographical origin; extra virgin olive oil; multivariate statistical analysis; historical climate data 1H NMR spectroscopy; EVOOs geographical origin; extra virgin olive oil; multivariate statistical analysis; historical climate data
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Rongai, D.; Sabatini, N.; Del Coco, L.; Perri, E.; Del Re, P.; Simone, N.; Marchegiani, D.; Fanizzi, F.P. 1H NMR and Multivariate Analysis for Geographic Characterization of Commercial Extra Virgin Olive Oil: A Possible Correlation with Climate Data. Foods 2017, 6, 96.

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