Resumen de Effects of raw material on the partition of some volatile

Roverto Zironi, Carla Da Porto

• Fractional distillation was used to study the effect of raw materials on grappa composition. Grape marc and grape marc with the addition of an amount of wine lees (42%) greater than the European Community regulation's limit (25%) permits were investigated. The concentration of all the volatile compounds considered, the percentage of extraction of acetalde‐hyde, methanol, ethylacetate and ethyl lactate, but not the kinetics of extraction of higher alcohols, acetic acid and ethyl lactate, are affected by this addition of lees to marc. Overall, the hygienic characteristics of grappa are improved.