A GC-MS study of the composition of nine different grappas (Italian grape marc spirit) was carried out.High-weight alcohols showed the greatest variations, while the lower congener concentrations generally were more uniform. Particularly interesting is the presence of 1,1-diethoxy-3-methylbutane (DMB), never detected before in grappa. DMB was present in all samples, ranging from 0.8 up to 30.6 mg L-1. This latter concentration was the highest detected in an alcoholic beverage so far. A discussion on the other volatile congeners was also reported. Principal component analysis was applied to the data and explained[80% of the whole variability. Most grappas are grouped in a single cluster, while the other samples are completely separated. DMB, ethyl acetate, ethyl lactate, and n-butanol are some examples of constituent able to differentiate the tested products.
|Data di pubblicazione:||2009|
|Titolo:||Composition of some commercial grappas (grape marc spirit):the anomalous presence of 1,1-diethoxy-3-methylbutane:a case study|
|Autori:||F. MASINO; G. MONTEVECCHI; C. RIPONI; A. ANTONELLI|
|Appare nelle tipologie:||Articolo su rivista|
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