title: Quantification of megastigmatrienone, a potential contributor to tobacco aroma in spirits.
abstract: A SPME-GC-MS method was adapted and validated in order to quantify 5 megastigmatrienones and related odorous compounds from oak wood: guaiacol, cis-whisky lactone, trans-whisky lactone, γ-nonalactone, eugenol, vanillin, and acetovanillone in a single run. The five megastigmatrienone isomers (tabanones) were quantified, for the first time, in Cognac, Armagnac and rum, as contributors to tobacco-like aromas. Spirits aged in oak barrels contain higher amounts, but megastigmatrienones are also present in freshly-distilled spirits. Statistical analysis revealed that freshly-distilled and barrel-aged spirits were differentiated by their megastigma-4,7E,9-trien-3-one levels. The Armagnac and Cognac samples were distinguished by their concentrations of the megastigma-4,6Z,8E-trien-3-one isomer.
authors.affiliation: Univ. Bordeaux, ISVV, EA 4577, Unité de Recherche Œnologie, 33882 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 33882 Villenave d'Ornon, France. Electronic address: davideslaghenaufi@gmail.com.
authors.forename: Davide
authors.initials: D
authors.lastname: Slaghenaufi
authors.affiliation: Univ. Bordeaux, ISVV, EA 4577, Unité de Recherche Œnologie, 33882 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 33882 Villenave d'Ornon, France.
authors.forename: Marie-Claire
authors.initials: MC
authors.lastname: Perello
authors.affiliation: Univ. Bordeaux, ISVV, EA 4577, Unité de Recherche Œnologie, 33882 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 33882 Villenave d'Ornon, France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Marchand
authors.affiliation: Univ. Bordeaux, ISVV, EA 4577, Unité de Recherche Œnologie, 33882 Villenave d'Ornon, France; INRA, ISVV, USC 1366 Œnologie, 33882 Villenave d'Ornon, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: de Revel
mesh_terms: D000434:Alcoholic Beverages / Q000032:analysis* / Q000592:standards; D001547:Benzaldehydes / Q000032:analysis; D003512:Cyclohexanones / Q000032:analysis* / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006139:Guaiacol / Q000032:analysis; D006801:Humans; D007536:Isomerism; D007783:Lactones / Q000032:analysis; D009812:Odorants / Q000032:analysis*; D014026:Nicotiana / Q000737:chemistry*; D014934:Wood / Q000737:chemistry
chemical_list: D001547:Benzaldehydes; D003512:Cyclohexanones; D007783:Lactones; D006139:Guaiacol; C100058:vanillin; C549856:(4Z)-4-((E)-but-2-enylidene)-3,5,5-trimethylcyclohex- 2-en-1-one
keywords: Armagnac; Cognac; Megastigmatrienone; Oak; Rum; SPME; Tabanone; Tobacco-like aroma