The pH values obtained for the wines produced from dried
grapes were higher than those for the control samples, a result that
was justify by the reduction in the content of free organic acids in
the must grapes during the dehydration process. The high total
acidity of these wines is related to the removal of water from the
berries during the grape dehydration (Panceri et al., 2013) and the
presence of lactic and succinic acid. The results for the volatile
acidity and the free and total sulphur dioxide content of the wines
are in accordance with the standards of the Brazilian legislation
(BRASIL, 2004). Similar results for total and volatile acidity as well
as pH have been previously obtained for Passito, Recioto and Ama-
rone wines (Dall'Asta et al., 2011; Loizzo et al., 2013).