Всероссийский научно-исследовательский институт виноградарства и виноделия имени Я.И. Потапенко -филиал Федерального государственного бюджетного научного учреждения «Федеральный Ростовский аграрный научный центр», Аннотация: Представлены результаты исследования оптических показателей сусла и вина из новых белых сортов винограда межвидового происхождения селекции ВНИИВиВ. Анализ полученных данных позволяет установить показатели качества винодельческой продукции из новых сортов винограда межвидового происхождения.Summary. The results of the study of optical indicators of must and wine from new white grape varieties of inter-specific origin of breeding VNIIViV are presented. Analysis of the data allows us to establish indicators of the quality of wine products from new grape varieties of inter-specific origin.Ключевые слова: оптические показатели, виноград, сорт, фенольные вещества, виноград межвидового происхождения, химический состав
Всероссийский научно-исследовательский институт виноградарства и виноделия имени Я.И. Потапенкофилиал Федерального государственного бюджетного научного учреждения «Федеральный Ростовский аграрный научный центр», г. Новочеркасск,
The aim of the work was to study the influence of bottle aging on the composition of organic acids and organoleptic properties of wines made from white grapevine varieties of Hungarian breeding growing in the Lower Don Region. The objects of the study were dry white wines made from grapevine varieties of Hungarian breeding − Bianca, Lakhedyi mesesh, Crystal, control − Aligote (Vitis vinifera L.), aged in a bottle from 1 to 3 years in the oenoteca of the Institute. The studies showed that during 3 years of aging the total content of organic acids (sum) decreased by 0.35−2.41 g/dm3. The largest decrease in the amount of organic acids was noted in the experimental wines from the variety Bianca (by 2.41 g/dm3). In the experimental wines the total amount of tartaric and malic acids was 56,8−76,3% of all the acids in the wine and decreased in the wines from variety Aligote (control) − by 11.2 %; Bianca − by 18.6 %; Lakhedi Mezesh − by 10,2 %; Kristall − by 7 % as it was aged in the bottle. The greatest decrease in tartaric acid concentration was observed in experimental wines of Bianca variety (by 2.4 g/dm3). In all the experiments the concentrations of succinic acid (by 13.3−28.3 %) and citric acid (by 20−38 %) decreased. The change of succinic acid content in the wines from Aligote variety (control) occurred after 2 years of aging in bottle, and of citric acid after 3 years of aging. In wines from varieties of Hungarian breeding (Bianca, Lakhedy Mesz, Crystal) it was observed that the change of citric acid content occurred after 2 years of aging and of amber acid content after 3 years. As a result of the organoleptic analysis it was determined that the highest tasting scores were given to Aligote (Control) (8,7−8,9 points) and Lakheddi mezesz (8,6−8,7 points), these wines during 3 years long aging had a bright varietal aroma, and more over their bouquet has improved, they have a light harmonious taste with a long pleasant aftertaste.
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