Table 1.
Comparison of grape characteristics of healthy and downy mildew infected-grape juice
| Grape characteristic | Sauvignon blanc |
Chardonnay |
Koshu |
Merlot |
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| Healthy | Downy mildew | Healthy | Downy mildew | Healthy | Downy mildew | Healthy | Downy mildew | |
| Berry weight (g)a | 1.39±0.2b | 0.94±0.3 | 1.60±0.3 | 1.02±0.2 | 1.57±0.2 | 0.81±0.3 | 1.60±0.2 | 1.02±0.3 |
| TSS | 11.4±0.2 | 10.4±0.1 | 12.5±0.2 | 11.2±0.1 | 5.7±0.1 | 6.9±0.1 | 12.2±0.1 | 13.3±0.2 |
| TA (g l−1) | 24.9±0.7 | 22.9±1.3 | 22.0±0.4 | 21.4±0.7 | 77.3±2.3 | 69.5±3.2 | 22.8±1.3 | 21.0±1.4 |
| pH | 2.60±0.02 | 2.73±0.03 | 2.79±0.04 | 2.84±0.03 | 2.34±0.02 | 2.40±0.02 | 2.85±1.3 | 2.95±0.03 |
| 3MH-S-glut (nM) | 33.9±1.4 | 829.7±14.2 | 21.6±0.2 | 1227.3±44.7 | 17.1±1.9 | 393.4±35.1 | 27.9±3.8 | 997.1±63.9 |
| 3MH-S-cys (nM) | 51.1±3.5 | 854.3±6.3 | 26.6±2.5 | 908.8±22.3 | 18.3±1.6 | 349.8±11.5 | 12.5±1.3 | 640.0±6.3 |
| GSH (nM) | 5603±62 | 122±4 | 2080±32 | 390±22.3 | 1084±12 | 497±11.5 | 2766±1.3 | 387±29 |
a
Berry weight and standard deviations were calculated from 10 berries.
b
Data are shown as means ±SDs of triplicate experiments.