Article ID Journal Published Year Pages File Type
1188117 Food Chemistry 2012 11 Pages PDF
Abstract

Cyazofamid, famoxadone, mandipropamid and valifenalate, four new fungicides for controlling downy mildew in vine, were applied to an experimental vineyard producing Vitis vinifera white grapes of the Godello variety. Following harvest, the grapes were subjected to single vinification runs. The odour activity values (OAVs) for the Godello white wines obtained were estimated with a view to assessing potential alterations of their aroma composition by effect of the phytosanitary treatments. Several fatty acids, their esters and acetates were formed during the winemaking process in high levels and could be expected to strongly influence the aroma of the wines by introducing floral, fruity and spicy nuances. The concentrations of six compounds (2-phenylethyl acetate, ethyl butanoate, ethyl octanoate, 4-vinylguaiacol, 3-methylbutanoic acid and methionol) were found to suffice with a view to discriminating between wines from grapes treated with fungicides under Critical Agricultural Practices (CAP) and under Good Agricultural Practices (GAP).

► Alterations of wine aroma by effect of new phytosanitary treatments. ► Fatty acids, their esters and acetates were formed in high levels. ► This influences the aroma by introducing floral, fruity and spicy nuances. ► Six compounds suffice to discriminate wines from grapes treated with fungicides. ► Terpenes and higher alcohols were not contributing to discrimination between groups.

Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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