3.2. Major volatiles and polyols
Table 3 shows the contents in major volatile compounds and
polyols. The methanol contents of the fermented wines were
slightly higher than those of the traditional Pedro Ximenez wine
without fermentation. This compound is formed by hydrolysis of
pectins in grape skin (Flanzy, 2003); therefore, S. cerevisiae strain
G1 probably possesses pectinase activity.