E3S Web Conf.
Volume 316, 20212nd International Conference on Agribusiness and Rural Development (IConARD 2021)
|Number of page(s)||8|
|Section||Agriculture Technology/Smart Farming|
|Published online||05 November 2021|
The influence of extraction methods on the quality characteristics of red wines
All-Russian National Research Institute of Viniculture and Winemaking "Magarach" of RAS, Kirova Str, 31, Yalta, 298600, Republic of Crimea, Russian Federation
* Corresponding author: Sofi4@list.ru
The main technological task in the production of high-quality red wines is to ensure favourable conditions for the extraction of components from solid elements of a grape bunch. Present work is devoted to the study and comparative assessment of the effect of various extraction methods (carbonic maceration of the must, carbonic maceration of grapes, pre-fermentative maceration of the must) on the quality characteristics of red wines prepared from grape varieties ‘Cabernet-Sauvignon’, ‘Syrah’ and ‘Merlot’. The positive effect of the methods of carbonic maceration of both must and grapes was established in relation to the accumulation of ethyl alcohol (by 0.5-0.9 %), as well as biologically active substances: flavan-3-ols ((+)-D-catechin and (-)-epicatechin) and oxycoric (caftaric and cautaric) acids – by 1.5-1.8 times compared to the classical technology. Therefore, the carbonic maceration method provides a less intensive course of oxidative processes at the stage of must, which causes the preservation of oxycoric acids in wine. Carbonic maceration of must provide a higher content of the reduced extract (up to 15%), effective extraction of anthocyanins (from 9 to 145%) and phenolic compounds (by 7-25%), which manifest itself through the increase in the color intensity index (up to 26%).
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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