The pH and concentrations of glucose, fructose, ethanol, glycerol,
volatile acidity, titratable acidity, succinic acid, major volatiles
and amino acids were subjected to analysis of variance in order to
identify significant differences between the different wines obtained.
In addition, the results were subjected to cluster analysis
according to Ward in order to assess similarity between the traditional
Pedro Ximenez wine (T), the wines obtained in successive
yeast reuses (B1eB5) and those provided by the control batch with
free yeasts (F),