Flavour Science: Chapter 42. Gas Chromatography-Olfactometric Profiles of Eight Different Varieties of Peruvian Pisco Spirits

The aromatic composition of 130 Peruvian pisco spirits was evaluated by gas chromatography-olfactometry (GC-O). These samples belonged to aromatic and non-aromatic piscos. The volatiles of these spirits samples were collected using a purge and trap system, and the number of odorants present was 30 in aromatic and 19 in non-aromatic samples. It is remarkable that most of them were identified. Nine of these odorants obtained values of modified frequency (%MF) higher than 50% (could be considered as the base of the aroma of this kind of spirit). Furthermore, other compounds have been found to have olfactometric scores that differ significantly between aromatic and non-aromatic piscos.