title: Identification of saffron aroma compound β-isophorone (3,5,5-trimethyl-3-cyclohexen-1-one) in some V. vinifera grape varieties.
abstract: Carotenoid-derived aroma compounds play an important role in the composition of aroma and grapes, and consequently of wine. The volatile composition of forty-five grape varieties harvested in 2011 and 2012 was investigated by solid phase extraction of samples and gas chromatography-mass spectrometry (GC-MS) analysis. In grape extracts of cultivars Barbera, Refosco dal Peducolo Rosso, Ribolla gialla and Rossese, the C9-norisoprenoid compound β-isophorone (3,5,5-trimethyl-3-cyclohexen-1-one) was found and quantified. This carotenoid-derived compound is characterised by a saffron aroma and is here reported in grape for the first time.
authors.affiliation: Consiglio per la Ricerca e la Sperimentazione in Agricoltura - Centro di Ricerca per la Viticoltura (CRA-VIT), Laboratorio Chimico, Viale XXVIII Aprile 26, 31015 Conegliano (TV), Italy.
authors.forename: Annarita
authors.initials: A
authors.lastname: Panighel
authors.forename: Itay
authors.initials: I
authors.lastname: Maoz
authors.forename: Mirko
authors.initials: M
authors.lastname: De Rosso
authors.forename: Fabiola
authors.initials: F
authors.lastname: De Marchi
authors.forename: Antonio
authors.initials: A
authors.lastname: Dalla Vedova
authors.forename: Massimo
authors.initials: M
authors.lastname: Gardiman
authors.forename: Luigi
authors.initials: L
authors.lastname: Bavaresco
authors.forename: Riccardo
authors.initials: R
authors.lastname: Flamini
mesh_terms: D027622:Crocus / Q000737:chemistry*; D003512:Cyclohexanones / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D052616:Solid Phase Extraction; D027843:Vitis / Q000737:chemistry*
chemical_list: D003512:Cyclohexanones; C005940:isophorone
keywords: Aroma compounds; Carotenoid derived; Gas chromatography; Grape; Mass spectrometry; Norisoprenoids; β-Isophorone