Effect of added sulphur dioxide levels on the aroma characteristics of wines from Panciu wine region
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327 16
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2024-03-22 10:05
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663.25(498) (1)
Wine. Winemaking. Oenology (442)
SM ISO690:2012
MACOVICIUC, Sorin, NECHITA, Constantin Bogdan , CIOROIU, Ionel Bogdan, COTEA, Valeriu, NICULAUA, Marius. Effect of added sulphur dioxide levels on the aroma characteristics of wines from Panciu wine region. In: Ştiinţa Agricolă, 2022, nr. 1, pp. 73-77. ISSN 1857-0003. DOI: https://doi.org/10.55505/sa.2022.1.10
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Ştiinţa Agricolă
Numărul 1 / 2022 / ISSN 1857-0003 /ISSNe 2587-3202

Effect of added sulphur dioxide levels on the aroma characteristics of wines from Panciu wine region

DOI:https://doi.org/10.55505/sa.2022.1.10
CZU: 663.25(498)

Pag. 73-77

Macoviciuc Sorin, Nechita Constantin Bogdan , Cioroiu Ionel Bogdan, Cotea Valeriu, Niculaua Marius
 
Research Centre for Oenology Iaşi - Romanian Academy Iași branch
 
 
Disponibil în IBN: 9 septembrie 2022


Rezumat

In the wine-making process, the yeasts form over 20 higher alcohols that improve the sensation of palatine veil for the wine. The amount of higher alcohols is lower for white and rosé wines obtained from clarified musts fermented at moderate temperatures. The formation of higher alcohols is confirmed by the fact that the addition of certain nitrogen compounds to a glucose-containing culture medium leads, after the fermentation, to an increase in the higher alcohol content. Data evaluate by comparison the levels of higher alcohols, esters and aldehydes, important to fermentation process in case of several wines from Panciu region. The wine-making was done by classical methods and by using specific protocols for low content sulphur dioxide. This study is focused to compare wines obtained from two grape varieties produced at industrial level: Feteasca regala vs. Feteasca regala Frizzante and Cabernet Sauvignon rosé vs. Cabernet Sauvignon. The compounds were analyzed by GC-FID method with head-space technique for methanol, 1-propanol, 2-methyl-propanol, 1-butanol, ethyl acetate, ethyl lactate, isoamyl acetate and acetaldehyde. The results showed that in almost every comparative study the levels of aroma compounds are maintained, when compared with the wines with low content of sulphur dioxide. Tuckey test showed that 1-propanol and ethyl acetate register statistically significant differences for Cabernet Sauvignon rosé and for Feteasca regala Frizzante.

Cuvinte-cheie
Higher alcohols, GC-FID, Fermentation, sulphur dioxide