title: Application of solid-phase microextraction to virgin olive oil quality control.
abstract: 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 30min of fibre exposition at 40 degrees C of sampling temperature by the selected 74 microm 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.
authors.affiliation: Estación de Olivicultura y Elaiotecnia CIFA 'Venta del Llano', Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), CICE, Mengibar, Jaén, Spain. antonio.jimenez.ext@juntadeandalucia.es
authors.forename: Antonio
authors.initials: A
authors.lastname: Jiménez
authors.forename: Maria P
authors.initials: MP
authors.lastname: Aguilera
authors.forename: Gabriel
authors.initials: G
authors.lastname: Beltrán
authors.forename: Marino
authors.initials: M
authors.lastname: Uceda
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D000069463:Olive Oil; D010938:Plant Oils / Q000737:chemistry*; D011786:Quality Control
chemical_list: D000069463:Olive Oil; D010938:Plant Oils