Geographical Characterization of Italian Extra Virgin Olive Oils Using High-Field 1 H NMR Spectroscopy
Articolo
Data di Pubblicazione:
2001
Citazione:
Geographical Characterization of Italian Extra Virgin Olive Oils Using High-Field 1 H NMR Spectroscopy / L. Mannina, M.Patumi, N. Proietti, D. Bassi, A.L.Segre. - In: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY. - ISSN 0021-8561. - 49:6(2001), pp. 2687-2696. [10.1021/jf001408i]
Abstract:
1H high-field nuclear magnetic resonance (NMR) was used to analyze 216 extra virgin olive oils
collected in three years (1996, 1997, and 1998) in different Italian areas in order to evaluate the
potential contribution of this technique to the geographical characterization of olive oils. A statistical
procedure performed on the intensity of selected NMR peaks has been proposed. Tree clustering
analysis of NMR data performed without any a priori hypothesis showed the existence of reliable
parameters able to group the olive oils according to the location of olive oil production. Linear
discriminant analysis applied to selected NMR parameters of olive oils of the same year of production
allowed the grouping of samples according to their geographical origin with only very few errors.
Moreover, a satisfactory grouping is reached by combining the NMR data of olive oils from two
different years (1996 and 1997). Operating on appropriate sampling, a careful analysis of data yielded
the conclusion that the place of olive production could be singled out as a discriminating factor
regardless of the cultivars from which the olive oils are derived.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Cultivar; Extra virgin olive oil; Geographical origin; Proton NMR spectroscopy; Statistical analysis
Elenco autori:
L. Mannina, M. Patumi, N. Proietti, D. Bassi, A.L. Segre
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