Journal
FOOD CHEMISTRY
Volume 111, Issue 2, Pages 322-328Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2008.03.066
Keywords
virgin olive oil; volatile compounds; ripening; irrigation; headspace-solid-phase microextraction (HS-SPME)
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The effects of ripening degree of olives on volatile profile of monovarietal virgin olive oils (VOO) from Tunisian and Sicilian cultivars were investigated. Fruits obtained from Tunisia (Chetoui and Chemlali) and Italy (Nocellara del Belice, Biancolilla and Cerasuola) were picked at three different stages of ripeness and then immediately processed. Moreover, the changes in volatile composition were evaluated in Chetoui variety as a function of the irrigation regime versus the rain-fed control. Using headspace-solid-phase microextraction (HS-SPME) technique coupled to GC-MS and GC-FID, the volatile compounds of the monovarietal virgin olive oils were identified and quantitatively analyzed. The proportions of different classes of volatiles of oils showed significant differences throughout the maturity process. The results suggest that adding to the genetic factor; agronomic conditions affect the volatile formation and therefore the organoleptic properties of VOO. (C) 2008 Elsevier Ltd. All rights reserved.
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