Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1121, Issue 1, Pages 140-144Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2006.05.005
Keywords
olive oil; solid-phase microextraction; quality control; volatile compounds
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Volatiles of olive oils from 'tree-picked', 'ground-picked' and both mixed olives were analysed by solid-phase microextraction and gas chromatography with flame ionisation detection (FID). Headspace sampling was carried out for 30 min of fibre exposition at 40 degrees C of sampling temperature by the selected 74 mu m polydimethylsiloxane/divinylbenzene (PDMS/DVB) fibre. Chromatographic data were analysed by principal components analysis (PCA) and then selected 14 compounds from x-loading of first principal component that provides a differentiation of oils accord its sensorial characterisation. Compounds such as 4-ethylphenol and styrene were identified by gas chromatography-mass spectrometry (GC-MS) in 'ground-picked' olive oils. (c) 2006 Elsevier B.V. All rights reserved.
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