title: Phenolic and Aroma Composition of White Wines Produced by Prolonged Maceration and Maturation in Wooden Barrels.
abstract: To investigate the phenolic and aroma composition of Malvazija istarska (Vitis viniferaL.) white wines produced by an unconventional technology comprising prolonged maceration followed by maturation in wooden barrels, representative samples were subjected to analysis by UV/Vis spectrometry, high-performance liquid chromatography, and gas chromatography-mass spectrometry. When compared to standard wines, the investigated samples contained higher levels of dry extract, volatile acidity, lactic acid, phenols, colour intensity, antioxidant activity, majority of monoterpenes, C13-norisoprenoids, methanol, higher alcohols, ethyl acetate, branched-chain esters and esters of hydroxy and dicarboxylic acids, ethylphenols, furans, and acetals, as well as lower levels of malic acid, β-damascenone, straight-chain fatty acids, ethyl and acetate esters. It was estimated that maceration had a stronger influence on phenols, and maturation on volatile aromas. Despite different vintages and technological details, the investigated wines showed a relative homogeneity in the composition, representing a clear and distinctive type.
authors.affiliation: Institute of Agriculture and Tourism, Karla Huguesa 8, HR-52440 Poreč, Croatia.
authors.forename: Igor
authors.initials: I
authors.lastname: Lukić
authors.affiliation: Institute of Agriculture and Tourism, Karla Huguesa 8, HR-52440 Poreč, Croatia.
authors.forename: Nikolina
authors.initials: N
authors.lastname: Jedrejčić
authors.affiliation: University of Zagreb, Faculty of Food Technology and Biotechnology, Pierottijeva 6, HR-10000 Zagreb, Croatia.
authors.forename: Karin Kovačević
authors.initials: KK
authors.lastname: Ganić
authors.affiliation: Polytechnic of Rijeka, Department of Agriculture, Karla Huguesa 6, HR-52440 Poreč, Croatia.
authors.forename: Mario
authors.initials: M
authors.lastname: Staver
authors.affiliation: Institute of Agriculture and Tourism, Karla Huguesa 8, HR-52440 Poreč, Croatia.
authors.forename: Đordano
authors.initials: Đ
authors.lastname: Peršurić
keywords: phenols; prolonged maceration; white wine; wine aroma; wine maturation