Table 2.
Contents of copper, iron, zinc, manganese and cadmium in initial juice and in finished wine.
| Sample | Element | |||||
|---|---|---|---|---|---|---|
| Copper | Iron | Zinc | Manganese | Cadmium | ||
| Initial juice | 0.22 ± 0.02 d | 6.78 ± 0.21 a | 1.78 ± 0.09 a | 2.28 ± 0.09 a | 0.75 ± 0.04 a | |
| Finished wine | ||||||
| Low | 0.00 mM (0 mg/L) | 0.04 ± 0.00 a | 5.66 ± 0.43 b | 1.44 ± 0.14 b | 1.98 ± 0.19 b | 0.56 ± 0.05 b |
| 0.05 mM (3.2 mg/L) | 0.05 ± 0.01 a | 5.71 ± 0.35 b | 1.35 ± 0.11 b | 1.87 ± 0.22 b | 0.65 ± 0.05 b | |
| Medium | 0.15 mM (9.6 mg/L) | 0.06 ± 0.01 a | 5.38 ± 0.47 b | 1.52 ± 0.15 b | 1.79 ± 0.17 b | 0.58 ± 0.07 b |
| 0.20 mM (12.8 mg/L) | 0.07 ± 0.02 a | 5.74 ± 0.61 b | 1.39 ± 0.19 b | 1.85 ± 0.14 b | 0.49 ± 0.04 b | |
| 0.25 mM (16.0 mg/L) | 0.11 ± 0.02 b | 5.41 ± 0.41 b | 1.45 ± 0.09 b | 1.91 ± 0.21 b | 0.55 ± 0.08 b | |
| 0.30 mM (19.2 mg/L) | 0.15 ± 0.03 bc | 5.32 ± 0.34 b | 1.51 ± 0.12 b | 1.78 ± 0.24 b | 0.59 ± 0.05 b | |
| 0.35 mM (22.4mg/L) | 0.16 ± 0.02 c | 5.56 ± 0.55 b | 1.45 ± 0.14 b | 1.89 ± 0.18 b | 0.61 ± 0.04 b | |
| High | 0.50 mM (32 mg/L) | 2.18 ± 0.19 e | 5.78 ± 0.37 b | 1.56 ± 0.11 b | 1.99 ± 0.18 b | 0.63 ± 0.06 b |
| 1.00 mM (64 mg/L) | 4.67 ± 0.23 f | 5.89 ± 0.44 b | 1.58 ± 0.09 b | 2.01 ± 0.25 b | 0.64 ± 0.04 b | |
| 1.50 mM (96 mg/L) | 7.59 ± 0.44 g | 5.97 ± 0.41 b | 1.55 ± 0.12 b | 2.09 ± 0.18 b | 0.67 ± 0.05 b | |
Note: the units for copper, iron, zinc and manganese were mg/L, while for cadmium was μg/L. And different letters (a, b, c) in each of the columns indicate that the values are significantly different (p < 0.05).