Study of the Cultivar-Compoition Relationship in Sicilian olive Oils by GC, NMR, and Statistical Methods (Articolo in rivista)

Type
Label
  • Study of the Cultivar-Compoition Relationship in Sicilian olive Oils by GC, NMR, and Statistical Methods (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Mannina L.(1), Dugo G.(2), Salvo F.(3), Cicero L.(4), Ansanelli G.(5), Calcagni C.(6), Segre A.L.(7) (2003)
    Study of the Cultivar-Compoition Relationship in Sicilian olive Oils by GC, NMR, and Statistical Methods
    in Journal of agricultural and food chemistry
    (literal)
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  • Mannina L.(1), Dugo G.(2), Salvo F.(3), Cicero L.(4), Ansanelli G.(5), Calcagni C.(6), Segre A.L.(7) (literal)
Pagina inizio
  • 120 (literal)
Pagina fine
  • 127 (literal)
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  • 51 (literal)
Rivista
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  • Tramite tecniche di analisi multivarata operanti su dati gas cromatografici ed NMR si รจ selezionata la cultivar in oli monovarietali provenienti dalla Sicilia occidentale. La selezione perfetta prova l'effeto della cultivar sulla composizione dell'olio. I dati NMR suggeriscono che solo le catene grasse in posizione sn1,3 operano la selezione genica. (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1 Univ.Molise STAAM Campobasso Italia 2,3,4 Univ.Messina dip.Chimica Messina Italia 5 ENEA Trisaia Italia 6, 7 IMC CNR Italia (literal)
Titolo
  • Study of the Cultivar-Compoition Relationship in Sicilian olive Oils by GC, NMR, and Statistical Methods (literal)
Abstract
  • The aim of this research is to find if there is direct evidence relating the fatty acid composition of olive oils to specific cultivars grown within a well-limited geographical region. To group olive oils according to their own cultivars,13C high-field nuclear magnetic resonance (NMR) and gas chromatography (GC) were used to analyze 60 extra virgin olive oils from the same Italian region (southwestern Sicily) obtained from four monovarietal cultivars. The 13C NMR spectrum provides information about glycerol triesters of olive oils, i.e., about the acyl composition of major components and about the fatty acids' positional distribution on the glycerol moiety. GC gives the complete fatty acid profile of olive oil samples. Selection of NMR and GC peaks on the basis of their sensitivity to the different cultivars was performed by using multivariate analysis of variance (MANOVA). Principal component analysis, tree clustering analysis, multidimensional scaling (MDS), and linear discriminant analysis (LDA) were then performed on the MANOVA-selected peaks. Results obtained from 13C NMR and GC techniques combined with the multivariate statistical procedure are in good agreement and prove the usefulness of fatty acids analysis to group the monovarietal olive oils belonging to the same cultivars. Grouping of olive oils according to their cultivars occurs for particular 13C resonances all belonging to fatty chains in the sn 1,3 position of the glycerol moiety. (literal)
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