In:
Flavour and Fragrance Journal, Wiley, Vol. 31, No. 5 ( 2016-09), p. 361-376
Abstract:
Freshly‐distilled French wine brandies were evaluated by gas chromatography‐olfactometry (GC‐O). Six brandy samples were studied, coming from two growth areas, both belonging to the same limited geographic zone, which is a homogeneous vineyard area. The GC‐O methodology, using detection frequency analysis, revealed 88 olfactive areas (OAs) for which the detection frequency was ≥ 25%. OAs were then identified using gas chromatography‐mass spectrometry in electron and chemical ionization modes and semi‐quantified by internal normalization using gas‐chromatography with flame ionization detection. Co‐eluting species were separated by multidimensional gas chromatography‐mass spectrometry/olfactometry (MDGC‐MS/O). Eleven new molecules were tentatively identified for the first time in brandy, as impact odorant compounds: ethyl prop‐2‐enoate, 2‐furfuryl formate, 1,2,4,5‐tetramethylbenzene, ( Z )‐ocimenol, 1,4,6‐trimethyl‐1,2‐dihydronaphthalene, 2‐ethoxybenzyl alcohol, 2‐ethylhexanoic acid, 2‐phenoxyethanol, 4‐hydroxy‐3‐methylacetophenone, 4‐(2,3,6‐trimethylphenyl)butan‐2‐one and 2,3‐dihydrofarnesol. Composition and perception differences between samples according to their origin were investigated. Statistical analyses on OA detection frequencies and semi‐quantitative data were used to distinguish the samples. A lot of variables appeared to be common to all spirits, and may represent an aromatic background for the brandies, characteristic of the geographic zone. Although a few particular OAs were found more relevant in particular samples, no growth area‐specific compound was identified. Therefore, differences between spirits are more likely due to an aromatic balance between concentrations of a set of common molecules, among which ethyl esters and alcohols played a prominent role, rather than the presence of specific compounds with unique aromas. Copyright © 2016 John Wiley & Sons, Ltd.
Type of Medium:
Online Resource
ISSN:
0882-5734
,
1099-1026
Language:
English
Publisher:
Wiley
Publication Date:
2016
detail.hit.zdb_id:
1483463-7
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