title: Determination of roasted pistachio (Pistacia vera L.) key odorants by headspace solid-phase microextraction and gas chromatography-olfactometry.
abstract: Key odorants in roasted pistachio nuts have been determined for the first time. Two different pistachio varieties (Fandooghi and Kerman) have been analyzed by means of headspace solid-phase microextraction (HS-SPME) and gas chromatography-olfactometry (GCO). The aroma extract dilution analyses (AEDA) applied have revealed 46 and 41 odor-active regions with a flavor dilution (FD) factor≥64 for the Fandooghi and the Kerman varieties, respectively, and 39 of them were related to precisely identified compounds. These included esters, pyrazines, aldehydes, acids, furans, and phenols. The results show that the Fandooghi variety presents, not only more odor-active regions but also higher FD factors than the Kerman variety that can lead to the conclusion that the first variety has a richer aromatic profile than the second one. The descriptive sensory analysis (DSA) showed that the roasted, chocolate/coffee, and nutty attributes were rated significantly higher in the Fandooghi variety, whereas the green attribute was significantly higher in the Kerman one.
authors.affiliation: Research Group of Analytical Chemistry of Wine and Food, Department of Analytical Chemistry and Organic Chemistry, Campus Sescelades, Facultat d'Enologia de Tarragona, Universitat Rovira i Virgili, 43007 Tarragona, Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Aceña
authors.forename: Luciano
authors.initials: L
authors.lastname: Vera
authors.forename: Josep
authors.initials: J
authors.lastname: Guasch
authors.forename: Olga
authors.initials: O
authors.lastname: Busto
authors.forename: Montserrat
authors.initials: M
authors.lastname: Mestres
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D005511:Food Handling; D009812:Odorants / Q000032:analysis*; D027927:Pistacia / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000302:isolation & purification; D052617:Solid Phase Microextraction / Q000379:methods*; D014835:Volatilization
chemical_list: D010936:Plant Extracts