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Food Chem

Title:		Evolution of free and bound volatile aroma compounds and phenols during fermentation of Muscat blanc grape juice with and without skins
Author(s):		Lukic I; Lotti C; Vrhovsek U;
Address:		"Institute of Agriculture and Tourism, K. Huguesa 8, 52440 Porec, Croatia; Centre of Excellence for Biodiversity and Molecular Plant Breeding, Svetosimunska 25, 10000 Zagreb, Croatia. Electronic address: igor@iptpo.hr. Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach, 1 38010 S. Michele all'Adige, TN, Italy"
Journal Title:		Food Chem
Year:		2017
Volume:		20170402
Issue:
Page Number:		25 - 35
DOI:		10.1016/j.foodchem.2017.03.166
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"Recently, various technologies which utilise fermentation with skins have been developed for obtaining distinct white wines. This study first reports the dynamic changes of volatiles and phenols that occur during skin fermentation in white winemaking. Volatiles were analysed by solid-phase extraction (SPE), solid-phase microextraction (SPME) and gas chromatography (GC), and phenols by ultra-performance liquid chromatography (UPLC), both with mass spectrometric detection. Monoterpenols increased during the first 3days of skin fermentation, after which certain glycosides decreased, but were higher than in control. The presence of skins reduced ho-trienol, beta-damascenone, acids and esters. After a 1-3days lag phase, skin fermentation caused a constant increase of most phenols. It was estimated that skin fermentation up to 1-3days might be beneficial for monoterpenol varietal aroma, which should be re-evaluated through further studies. Longer durations promoted phenol extraction more strongly, which is possibly suitable for obtaining more distinct wines or blending components"
Keywords:		Fermentation Flavoring Agents Gas Chromatography-Mass Spectrometry *Phenols *Vitis Volatile Organic Compounds *Wine Evolution Fermentation with skins Monoterpenes Phenols Varietal aroma;
Notes:		"MedlineLukic, Igor Lotti, Cesare Vrhovsek, Urska eng England 2017/05/12 Food Chem. 2017 Oct 1; 232:25-35. doi: 10.1016/j.foodchem.2017.03.166. Epub 2017 Apr 2"