4. Conclusions
The results of this work show that Boal, Malvasia, Sercial
and Verdelho varieties have different profiles of terpenoids.
Malvasia has a higher total amount of these compounds than
other varieties. -Damascenone, the most abundant norisoprenoid
in the varieties studied, and -ionone are present at
levels higher than its perception threshold (45 ng l−1) and
for this reason provide a fruity and exotic aroma to the musts