Characterization and Differentiation of Monovarietal Grape Marc Distillates on the Basis of Varietal Aroma Compound Composition

To investigate the varietal aroma compound composition of monovarietal grape marc distillates made from six different varieties (Vitis vinifera L.) in the region of Istria (Croatia), 30 samples were subjected to GC/MS and GC/FID analysis. A total of 73 compounds were identified: 45 monoterpenes, 20...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2010-06, Vol.58 (12), p.7351-7360
Main Authors: Lukić, Igor, Miličević, Borislav, Banović, Mara, Tomas, Srećko, Radeka, Sanja, Peršurić, Đordano
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cabernet Sauvignon
Chardonnay
cultivars
distillates
Distillation
diterpenoids
Flavoring Agents - chemistry
Flavors and Aromas/Chemosensory Perception
food composition
Food industries
Fundamental and applied biological sciences. Psychology
geographical variation
grape pomace
isoprenoids
Istrian Malvasia
Malvazija istarska
monoterpenoids
norisoprenoids
odor compounds
provenance
sesquiterpenoids
Teran
Vitis - chemistry
Vitis vinifera
Volatile Organic Compounds - chemistry
Wine - analysis
wine grapes
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Summary:To investigate the varietal aroma compound composition of monovarietal grape marc distillates made from six different varieties (Vitis vinifera L.) in the region of Istria (Croatia), 30 samples were subjected to GC/MS and GC/FID analysis. A total of 73 compounds were identified: 45 monoterpenes, 20 sesquiterpenes, 3 diterpenes, and 5 C13-norisoprenoids. The largest number and the highest concentration of monoterpenes were found in Muscat Blanc, followed by Rose Muscat of Poreč (Muškat ruža porečki) distillates, which were both characterized as highly aromatic. Lower, but still significant monoterpenol content was determined in distillates made from Istrian Malvasia (Malvazija istarska) grape marc. Chardonnay, Cabernet Sauvignon, and Teran distillates exhibited poorer monoterpene profiles, while Teran distillates contained elevated sesquiterpene concentrations. It was concluded that investigated monovarietal grape marc distillates significantly differ in varietal aroma compound composition. Stepwise linear discriminant analysis provided efficient discrimination models, and extracted various monoterpenes, sesquiterpenes and C13-norisoprenoids as important differentiators of distillates according to varietal origin.
ISSN:0021-8561
1520-5118
DOI:10.1021/jf100214k