Effect of the growing area conditions on differentiation between Chemlali and Chétoui olive oils

Effect of Agricultural Sites on Differentiation between Chemlali and Neb Jmel Olive Oils

“…Data proved the influence of geographical location on carotenoids content: both Chemlali and Neb Jmel olive oils from the center contained the lowest levels 2.52 and 2.87 mg/kg, respectively. Carotenoids pigments varied between 2.52 and 6.31 mg/kg, with the highest amounts observed in the oils of southern Chemlali and the lowest ones in Chemlali from the center as was previously described 33,34 …”

Geographical Discrimination of Virgin Olive Oils from the Tunisian Coasts by Combining Fatty Acids and Phenolic Acids Profiles within a Multivariate Analysis

“…These observations were already pointed out by Issaoui et al in 2010 23 who founded significant differences between the oils from both cultivars when grown in different environments. In fact, these authors demonstrated that at higher altitude, the oils showed a greater amount of oleic acid, phenols and a higher stability, whilst in the open the oils had higher saturated and linoleic acid content.…”

Sensory and Volatile Profiles of Monovarietal North Tunisian Extra Virgin Olive Oils from ‘Chétoui’ Cultivar

“…The means values for EVOOT and EVOON were respectively 13.4 and 9.4 mg / kg. Some researchers found that E -hex-2-enal was the dominant volatile in Chétoui oils profiles 7 . This compound could be, also, considered the main contributor to green, fruity, bitter and astringent attributes 27 .…”

“…In 2007, other peculiar differences in the composition of volatile in Tunisian and French from Protected Designation of Origin PDO oils were found 6 demonstrating that the building up of metabolites in oils from different cultivars was related to genetic origin. Different studies on chemical composition of extra virgin olive oils EVOO revealed, also, the influence of growing areas 7 . So, the olive production area is greatly responsible for the specific characteristics of olive oil.…”