Table A2.
Descriptive statistics of the tannin content for each wine region, expressed in mg/L in equivalent (+)-catechin.
| N | Alavesa 33 | Alta 34 | Baja 33 | Blayais 5 | Bordeaux 13 | Graves 13 | Libournais 27 | Médoc 36 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cat-Mv3G | 0.09 | ±0.04 | 0.06 | ±0.04 | 0.07 | ±0.04 | 0.05 | ±0.03 | 0.07 | ±0.02 | 0.10 | ±0.04 | 0.08 | ±0.03 | 0.10 | ±0.04 |
| (+)-cat. | 42.97 | ±9.47 | 49.48 | ±16.86 | 54.75 | ±18.39 | 75.32 | ±21.76 | 64.93 | ±18.91 | 77.37 | ±17.57 | 69.92 | ±15.67 | 66.29 | ±13.90 |
| (−)-epicat. | 9.78 | ±4.94 | 14.82 | ±11.80 | 19.48 | ±10.74 | 31.67 | ±15.74 | 29.70 | ±17.01 | 38.25 | ±14.54 | 32.95 | ±10.58 | 30.63 | ±12.55 |
| B1 | 30.65 | ±9.12 | 30.24 | ±12.02 | 29.05 | ±11.88 | 30.36 | ±8.79 | 30.68 | ±9.18 | 40.77 | ±9.80 | 33.15 | ±10.99 | 31.04 | ±10.89 |
| B3 | 10.37 | ±3.77 | 12.17 | ±6.69 | 14.01 | ±7.19 | 15.17 | ±7.47 | 17.85 | ±9.14 | 25.63 | ±10.71 | 21.08 | ±8.30 | 19.17 | ±9.26 |
| C1 | 5.17 | ±0.90 | 5.59 | ±1.60 | 6.08 | ±1.90 | 7.01 | ±1.54 | 6.96 | ±1.82 | 9.01 | ±2.22 | 7.83 | ±1.84 | 7.39 | ±1.88 |
| mDP | 4.16 | ±1.15 | 3.62 | ±0.82 | 3.50 | ±0.61 | 2.76 | ±0.22 | 2.94 | ±0.68 | 3.36 | ±0.40 | 2.70 | ±0.64 | 2.90 | ±0.49 |
N, Number of samples; Cat-Mv3G, catechin-malvidin-3-O-glucoside; (+)-cat., (+)-catechin; (−)-epicat., (−)-epicatechin; B1, procyanidin dimer B1; B3, procyanidin dimer B3; C1, procyanidin trimer C1; mDP, mean degree of polymerisation.