Heat summation, proanthocyanidin (PA) concentration, and mean degree of polymerization (mDP) for wine and grapes.
| Wine | Grape | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Vintage | Heat summationa | Total PA (mg/L) | mDPb | Skin PA veraison (nmol/g berry) | mDP veraisonc | Skin PA harvest (nmol/g berry) | mDP harvestc | Seed PA veraison (nmol/g berry) | mDP veraisonc | Seed PA harvest (nmol/g berry) | mDP harvestc |
| aGrowing degree days (10°C base) from Jan to veraison. | |||||||||||
| bMean degree of polymerization including flavan-3-ol monomers. | |||||||||||
| cMean degree of polymerization excluding flavan-3-ol monomers. | |||||||||||
| 2001 | 802 | 444 | 2.3 | 5539 | 20.1 | 2629 | 27.0 | 19877 | 8.8 | 9314 | 6.9 |
| 2002 | 860 | 512 | 2.5 | 6633 | 32.1 | 3024 | 42.0 | 28752 | 9.7 | 12152 | 9.4 |
| 2003 | 972 | 554 | 2.9 | 8456 | 34.9 | 3860 | 28.9 | 31319 | 8.5 | 14527 | 5.9 |