The use of fungicides for the control of pest in the vineyard
shows the risk of residues of these compounds in grapes, and their
transfer to wines elaborated with these grapes, implying a health
hazard. For this reason, their maximum residue limits (MRLs) are
controlled by the current legislation. Moreover, these residues
can affect the yeast involved in the fermentative process.
Hence, their effect on yeast population and fermentation have been
studied by several authors Some suggest that depending on the type of fungicides the effect
will be different, as they show specificity for certain species Thus, some types of fungicides
can slow down fermentation and in extreme cases
they may even stop it while other types of
fungicides do not affect it The aroma of a wine is one of the most important characteristics
in defining its quality. Since several wine volatile compounds are
produced during fermentation, the potential impact of fungicide
residues on their biosynthesis, and so on the total wine aroma, is
a matter of a great concern. In fact, new phytosanitary products
used to control fungal diseases should be completely inactive
against fermentative microflora To our knowledge, there are few data about the influence of
new-generation fungicides on aroma biosynthesis on volatile composition of white wines and red wines
For these reasons, the aim of this work was to study the influence
of the use of several fungicides widely used in the vineyard
on the volatile composition of red wines obtained from inoculated
fermentation. Individual treatments at the recommended doses
were performed with the selected fungicides under critical agricultural
practices (CAP).