Table 4.
Major volatile composition of wines
| Year | Treatment | Acetaldehide (mg/L) | Ethyl acetate (mg/L) | Methanol (mg/L) | 1-propanol (mg/L) | 2-methyl-1- propanol (mg/L) | 2 and 3-methyl-1-butanol (mg/L) |
|---|---|---|---|---|---|---|---|
| 2006 | Control | Nd | 23.4 b ± 0.6 | 111.5 b ± 5.0 | 30.6 ns ± 1.3 | 43.6 b ± 07 | 283.8 b ± 4.1 |
| CPM | Nd | 35.4 a ± 12.1 | 128.1 a ± 0.7 | 31.0 ns ± 1.9 | 75.6 a ± 0.5 | 305.7 a ± 29.5 | |
| 2007 | Control | Nd | 32.1 b ± 0.1 | 138.2 ns ± 0.1 | 40.4 a ± 0.1 | 44.3 b ± 0.1 | 300.3 b ± 0.2 |
| CPM | Nd | 33.8 a ± 0.3 | 139.2 ns ± 1.6 | 32.5 b ± 0.1 | 64.6 a ± 0.3 | 368.6 a ± 0.7 | |
| 2009 | Control | 14,0 a ± 2.0 | 22.6 b ± 0.4 | 103.9 b ± 1.5 | 22.4 b ± 0.3 | 72.6 b ± 0.4 | 337.4 b ± 3.4 |
| CPM | 7,7 b ± 0.6 | 39.9 a ± 1.1 | 115.5 a ± 4.4 | 24.7 a ± 0.2 | 88.5 a ± 5.1 | 392.0 a ± 4.6 | |
| 2010 | Control | 7,3 b ± 0.2 | 30.4 a ± 0.4 | 88.6 a ± 0.7 | 52.6 b ± 0.3 | 80.3 b ± 0.6 | 272.5 b ± 1.4 |
| CPM | 8,3 a ± 0.1 | 27.3 b ± 0.3 | 79.7 b ± 0.7 | 53.3 a ± 0.1 | 91.2 a ± 0.5 | 285.1 a ± 0.8 |
Mean values ± standard deviations. Values with the same letter in the same year mean that there are no statistically significant differences between the wines, according to a Tukey test (p < 0.05)