Table 1.
Composition of condensed tannins (CT) isolated from tilia flowers and leaves of goat willow, black currant and red currant.
| Plant source | CT fraction | CT-content (g CT/100 g fraction) | mDPa | PCb % | PDb % | cisc% | transc% |
|---|---|---|---|---|---|---|---|
| Goat willow | F1 | 70.4 (±1.7) | 2.26 (0.0) | 96.2 (0.0) | 3.8 | 6.0 (0.0) | 94.0 |
| F2 | 97.3 (±2.9) | 6.35 (0.1) | 95.7 (0.0) | 4.3 | 8.9 (0.2) | 91.1 | |
| Tilia | F1 | 52.5 (±1.5) | 2.89 (0.0) | 100 (0.0) | 0.0 | 88.6 (0.1) | 11.4 |
| F2 | 90.8 (±10.6) | 8.80 (0.0) | 100 (0.0) | 0.0 | 95.4 (0.1) | 4.6 | |
| Black currant | F1 | 66.4 (±0.4) | 2.78 (0.0) | 7.1 (2.4) | 92.9 | 22.0 (0.2) | 78.0 |
| F2 | 99.8 (±2.4) | 9.67 (0.1) | 5.3 (0.0) | 94.7 | 17.8 (0.1) | 82.2 | |
| Red currant | F1 | 43.4 (±3.8) | 5.41 (0.1) | 10.1 (0.0) | 89.9 | 62.5 (0.5) | 37.5 |
| F2 | 88.9 (±11.9) | 19.0 (0.3) | 5.1 (0.0) | 94.9 | 74.6 (0.2) | 25.4 |
a
mDP: mean degree of polymerisation.
b
PC, PD: percentage of procyanidin or prodelphinidin tannins.
c
cis, trans: percentage of cis- or trans-flavan-3-ols.