title: 'Fortified' wines volatile composition: Effect of different postharvest dehydration conditions of wine grapes cv. Malvasia moscata (Vitis vinifera L.).
abstract: The impact of postharvest dehydration on the volatile composition of Malvasia moscata grapes and fortified wines produced from them was assessed. The ripeness effect of fresh grapes on volatile compounds of dehydrated grapes was evaluated for the first time in this study. Fresh grape berries were densimetrically sorted, and more represented density classes were selected. Dehydration of riper berries (20.5 °Brix) led to volatile profiles richer in terpenes, particularly linalool and geraniol. The effect of dehydration rate on the volatile composition of dehydrated grapes and fortified wines was also evaluated. Fast dehydration grapes were richer in total free terpenes, and the resulting wines contained greater amounts of volatile compounds. The predominant compounds were free esters, but linalool, rose oxide, citronellol and geraniol can also contribute to wine aroma, particularly for fast dehydration. β-Damascenone can be an active odorant, although its contribution was greater in wines made from slow dehydrated grapes.
authors.affiliation: University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Delia Elena
authors.initials: DE
authors.lastname: Urcan
authors.affiliation: Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Simone
authors.initials: S
authors.lastname: Giacosa
authors.affiliation: Università Cattolica del Sacro Cuore, Istituto di Enologia e Ingegneria Agro-Alimentare, Via Emilia Parmense 84, 29122 Piacenza, Italy.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Torchio
authors.affiliation: Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Susana
authors.initials: S
authors.lastname: Río Segade
authors.affiliation: Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, Unità Grugliasco, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Raimondi
authors.affiliation: Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Marta
authors.initials: M
authors.lastname: Bertolino
authors.affiliation: Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy.
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Gerbi
authors.affiliation: University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania.
authors.forename: Nastasia
authors.initials: N
authors.lastname: Pop
authors.affiliation: Università degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy; Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, Unità Grugliasco, Largo Paolo Braccini 2, 10095 Grugliasco, TO, Italy. Electronic address: luca.rolle@unito.it.
authors.forename: Luca
authors.initials: L
authors.lastname: Rolle
mesh_terms: D000080462:Acyclic Monoterpenes; D003681:Dehydration; D004952:Esters; D005638:Fruit / Q000737:chemistry*; D039821:Monoterpenes / Q000032:analysis; D045792:Norisoprenoids / Q000032:analysis; D013729:Terpenes / Q000032:analysis; D027843:Vitis / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D000080462:Acyclic Monoterpenes; D004952:Esters; D039821:Monoterpenes; D045792:Norisoprenoids; D013729:Terpenes; C018584:linalool; C007836:geraniol; C007078:citronellol; C075388:beta-damascenone
keywords: Berry density; Fortified wines; Postharvest dehydration; Terpenes; Volatile compounds; Wine grapes