Journal
FOOD CHEMISTRY
Volume 131, Issue 3, Pages 826-836Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2011.09.053
Keywords
Cyazofamid; Famoxadone; Mandipropamid; Valifenalate; Odour activity values (OAVs); Godello white wines
Funding
- Spanish Ministry of Education and Science [AGL2007-62075]
- Xunta de Galicia [PGIDT07-TAL016383PR]
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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). (C) 2011 Elsevier Ltd. All rights reserved.
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