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A Multi-Methodological Protocol to Characterize PDO Olive Oils

A Multi-Methodological Protocol to Characterize PDO Olive Oils

Authors :
Simone Circi
Cinzia Ingallina
Silvia Vista
Donatella Capitani
Andrea Di Vecchia
Genesio Leonardi
Giovanni D’Achille
Luigi Centauri
Federica Camin
Luisa Mannina
Source :
Metabolites, Vol 8, Iss 3, p 43 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

An analytical approach including Panel Test, Isotope Ratio Mass Spectrometry (IRMS) and Nuclear Magnetic Resonance (NMR) spectroscopy was proposed to characterize Italian “Colline Pontine” PDO olive oils (40 samples) of two consecutive crop years. Our approach has evidenced the high quality of these olive oils. Only 6 of 40 olive oils samples were defined as “defective” by the official Panel Test due to the detection of negative sensory attributes. The low variability of isotopic data monitored by IRMS confirmed that the olive oil samples all came from a limited geographical area. NMR spectra did not evidence any chemical composition anomaly in the investigated samples. In order to assess the influence of harvesting year over the olive oil chemical composition, the NMR analysis was extended to other 22 olive oil samples of a third harvesting year. NMR data were submitted to two different statistical methods, namely, analysis of variance (ANOVA) and principal component analysis (PCA) allowing olive oils of three consecutive harvesting years to be grouped.

Details

Language :
English
ISSN :
22181989
Volume :
8
Issue :
3
Database :
Directory of Open Access Journals
Journal :
Metabolites
Publication Type :
Academic Journal
Accession number :
edsdoj.bc1f63f46de84beb9f6e96be51825d97
Document Type :
article
Full Text :
https://doi.org/10.3390/metabo8030043