Table 2.
Skinproanthocyanidinconcentrations and characteristics of Bordeaux grapes varieties. C, (+)-catechin; EC, (-)-epicatechin; B1, dimer B1; B3, dimer B3.
| Merlot-Skins | Cabernet-Sauvignon-Skins | |||||||
|---|---|---|---|---|---|---|---|---|
| 2006 | 2007 | 2008 | 2009 | 2006 | 2007 | 2008 | 2009 | |
| C* | 0.312b** | 0.243b | 0.025a | 0.032a | 0.127a | 0.762b | 0.045a | 0.018a |
| StdErr | 0.049 | 0.063 | 0.002 | 0.005 | 0.017 | 0.108 | 0.011 | 0.003 |
| EC | 0.031a | 0.481b | 0.014a | 0.029a | 0.098a | 0.625b | 0.036a | 0.006a |
| StdErr | 0.006 | 0.079 | 0.002 | 0.008 | 0.011 | 0.196 | 0.009 | 0.002 |
| B1 | 0.015a | 0.082a | 0.074a | 0.027a | 0.034a | 0.036a | 0.070a | 0.007a |
| StdErr | 0.002 | 0.038 | 0.005 | 0.003 | 0.010 | 0.023 | 0.015 | 0.002 |
| B3 | 0.014a | 0.484b | 0.070a | 0.009a | 0.085a | 1.502a | 0.158a | 0.004a |
| StdErr | 0.004 | 0.166 | 0.008 | 0.001 | 0.017 | 0.708 | 0.022 | 0.001 |
| mDP | 24.117c | 15.113b | 16.566b | 3.910a | 21.955b | 26.623b | 19.882b | 3.97a |
| StdErr | 1.997 | 1.970 | 1.823 | 0.331 | 1.597 | 3.762 | 2.299 | 0.316 |
| %G | 1.405a | 1.398a | 1.086a | 21.360b | 2.721a | 4.388a | 2.656a | 23.800b |
| StdErr | 0.225 | 0.183 | 0.118 | 1.427 | 0.287 | 0.698 | 0.330 | 2.660 |
| %P | 2.419a | 3.528a | 9.950b | 22.730c | 10.191a | 11.012a | 23.508b | 25.880b |
| StdErr | 0.266 | 0.643 | 0.716 | 2.284 | 1.217 | 1.813 | 1.628 | 2.400 |
* concentrations in mg/g dw skins; mDP, mean degree of polymerization; %G, percentage of galloylation; %P, percentage of prodelphinidins. Std Err, standard error; ** ANOVA to compare data, for each variety (M or CS) values with different letters within each row are significantly different (Tukey’s test, p < 0.05).