Fatty acids,volatiles, sterols and triterpenic alcohols of six monovarietal Tunisian virgin olive oils |
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| Authors: | Dhouha Krichène Amira Allalout Maria D Salvador Giuseppe Fregapane Mokhtar Zarrouk |
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| Affiliation: | 1. Centre de Biotechnologie de Borj Cedria, Laboratoire Caractérisation et Qualité de l'Huile d'Olive, Hammam‐Lif, Tunisia;2. Universidad de Castilla‐La Mancha, Facultad de Ciencias Quimicas, Departamento de Quimica Analitica y Tecnologia de Alimentos, Ciudad Real, Spain |
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| Abstract: | Fatty acids, volatiles, sterols, aliphatic and triterpenic alcohols of six monovarietal Tunisian virgin olive oils were analyzed. The results suggested that the compositional data concerning the above analytical fractions were effective in discriminating between varieties. The oils were found to contain high levels of oleic acid (up to 71.70% in the Oueslati variety). β‐Sitosterol (up to 85.46% in the Jdallou variety) and Δ5‐avenasterol (up to 30.97% in the El Hor variety) were the principal sterols in all samples; campesterol and stigmasterol were found at low levels. (E)‐2‐Hexenal was the main compound that characterizes the olive oil headspace of all samples. The other compounds identified were mainly C6 aliphatic components. |
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| Keywords: | Fatty acids Monovarietal olive oils Olive cultivars Sterols Volatiles |
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