title: Targeting key aromatic substances on the typical aroma of sherry vinegar.
abstract: Two gas chromatography-olfactometry (GC-O) techniques were used to screen targeting compounds with an impact on the perceived quality of Sherry vinegar: detection frequency and aroma extract dilution analysis (AEDA). The GC-O study revealed the presence of 108 aromatic notes, of which 64 were identified. Diacetyl, isoamyl acetate, acetic acid, and sotolon reached the highest frequency and flavor dilution (FD) factors. Ethyl acetate accounted for the maximum frequency but only a FD factor of 4. To test the sensory impact of these odorants, they were added to a 7% (w/v) acetic acid solution. We determined similarity values (SV) between solutions and the Sherry vinegar. The highest value from the similarity test was observed when diacetyl, ethyl acetate, and sotolon were added simultaneously. The profile of this model solution and a representative Sherry vinegar showed good similarity in the general impression descriptor, which emphasizes the important contribution of these three compounds to the global aroma of this vinegar.
authors.affiliation: Area de Nutrición y Bromatología, Facultad de Farmacia, Universidad de Sevilla, c/P García González 2, E-41012 Sevilla, Spain. raqcalfer@alum.us.es
authors.forename: Raquel M
authors.initials: RM
authors.lastname: Callejón
authors.forename: M Lourdes
authors.initials: ML
authors.lastname: Morales
authors.forename: Ana M
authors.initials: AM
authors.lastname: Troncoso
authors.forename: Antonio C
authors.initials: AC
authors.lastname: Silva Ferreira
mesh_terms: D000085:Acetates / Q000032:analysis; D019342:Acetic Acid / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods; D003931:Diacetyl / Q000032:analysis; D005663:Furans / Q000032:analysis; D006801:Humans; D009812:Odorants / Q000032:analysis*; D012903:Smell
chemical_list: D000085:Acetates; D005663:Furans; C054511:4,5-dimethyl-3-hydroxy-2(5H)-furanone; C007650:ethyl acetate; D003931:Diacetyl; D019342:Acetic Acid