Table 2.
Mean values and standard deviations of Sauvignon Blanc grape samples of the ultrasound lab-scale experiment.
| Parameter | Control (n = 5) |
3 min (n = 5) |
5 min (n = 5) |
|||
|---|---|---|---|---|---|---|
| Conductibility (mS/cm) | 2.06 ± 0.22 | b | 2.41 ± 0.26 | a | 2.61 ± 0.22 | a |
| Catechins (mg/L) | 8.4 ± 2.0 | b | 18.2 ± 5.1 | b | 37.4 ± 20.8 | a |
| Tannins (mg/L) | 17.69 ± 4.11 | 20.70 ± 4.31 | 21.96 ± 3.97 | |||
| Total polyphenols (mg/L) | 403.2 ± 44.7 | b | 510.1 ± 134.5 | ab | 624.5 ± 160.9 | a |
| Hydroxycinnamate-tartaric acids (mg/L) | 1.61 ± 0.35 | 1.82 ± 0.52 | 2.12 ± 0.67 | |||
| GSH-3MH (µg/L) | 168 ± 43 | 156 ± 36 | 149 ± 32 | |||
| Cys-3MH (µg/L) | 96 ± 44 | 95 ± 44 | 97 ± 41 | |||
| Cys-4MMP (µg/L) | 13 ± 3 | 12 ± 3 | 12 ± 3 |
Different letters indicate values statistically differentiated with the Fisher’s Least Significant Difference test (n = 5; p < 0.05). (GSH-3MH: 3-S-glutathionyl mercaptohexan-1-ol; Cys-3MH: 3-S-cysteinyl mercaptohexan-1-ol; Cys-4MMP: 3-S-cysteinyl mercapto-4-methyl-pentan-2-one).