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Preliminary characterisation of virgin olive oils obtained from different cultivars in Sardinia

Cerretani, Lorenzo and Bendini, Alessandra and Del Caro, Alessandra and Piga, Antonio <1965- > and Vacca, Vincenzo and Caboni, Maria Fiorenza and Gallina Toschi, Tullia (2006) Preliminary characterisation of virgin olive oils obtained from different cultivars in Sardinia. European Food Research and Technology, Vol. 222 (3-4), p. 354-361. eISSN 1438-2385. Article.

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DOI: 10.1007/s00217-005-0088-9

Abstract

Chemical characterisation was carried out on 12 virgin olive oil samples obtained from seven olive cultivars (Bosana, Carolea, Nocellara del Belice, Pizz'e Carroga, Semidana, Tonda and Zinzala cvs.). The olives came from different groves in Sardinia (Italy) and Corsica (France) that were processed by different types of continuous mills. Several qualitative parameters were evaluated (free acidity, peroxide value, and UV spectrophotometric indices) and analyses of major (fatty acids and triacylglycerol compositions) and minor components (chlorophylls, carotenoids, tocopherols and phenolic compounds) was also carried out. The oxidative stability index (OSI) and ABTS•− test values were determined to evaluate the oxidative stability and antioxidant activity of the phenolic fraction, respectively. The results were subjected to a discriminative study by principal component analysis (PCA) to characterise the different oils. A first PCA using only the triglyceride compounds and a second using the minor polar compounds and their antioxidant activity was performed. The triglyceride composition was found to be particularly useful in discriminating the oil samples.

Item Type:Article
ID Code:1555
Status:Published
Refereed:Yes
Uncontrolled Keywords:Virgin olive oil, olive cultivar, phenols, triglycerides, minor components, Sardinia
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/15 Scienze e tecnologie alimentari
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze ambientali agrarie e biotecnologie agro-alimentari
Publisher:Springer Berlin / Heidelberg
eISSN:1438-2385
Additional Information:Pubblicato online il 28 settembre 2005.
Deposited On:18 Aug 2009 10:05

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