Table 2.
Proanthocyanidin characterization of U. tomentosa extracts by DI-ESI-QTOF MS.
| DP | (epi)cat | (epi)afz | m/z Theoretical [M−H]− | m/z Experimental [M−H]− | |||
|---|---|---|---|---|---|---|---|
| Bark (n = 4) | Leaves (n = 4) | Stems (n = 3) | Wood (n = 3) | ||||
| 3 | 3 | 0 | 865.198 | 865.185 | 865.183 | 865.185 | 865.193 |
| 2 | 1 | 849.203 | 849.189 | 849.188 | 849.189 | 849.203 | |
| 1 | 2 | 833.208 | 833.192 | 833.193 | 833.190 | ||
| 0 | 3 | 817.213 | 817.196 | ||||
| 4 | 4 | 0 | 1153.261 | 1153.245 | 1153.245 | 1153.246 | 1153.255 |
| 3 | 1 | 1137.266 | 1137.249 | 1137.249 | 1137.251 | 1137.269 | |
| 2 | 2 | 1121.272 | 1121.255 | 1121.257 | |||
| 1 | 3 | 1105.277 | 1105.260 | 1105.265 | |||
| 0 | 4 | 1089.282 | 1089.264 | ||||
| 5 | 5 | 0 | 1441.325 | 1441.305 | 1441.308 | 1441.308 | 1441.318 |
| 4 | 1 | 1425.330 | 1425.310 | 1425.311 | 1425.313 | 1425.332 | |
| 3 | 2 | 1409.335 | 1409.314 | 1409.316 | 1409.317 | ||
| 2 | 3 | 1393.340 | 1393.321 | 1393.326 | |||
| 1 | 4 | 1377.345 | 1377.326 | ||||
| 0 | 5 | 1361.350 | 1361.331 | ||||
| 6 | 6 | 0 | 1729.388 | 1729.366 | 1729.373 | 1729.369 | 1729.382 |
| 5 | 1 | 1713.393 | 1713.370 | 1713.375 | 1713.374 | 1713.399 | |
| 4 | 2 | 1697.398 | 1697.373 | 1697.378 | 1697.381 | 1697.446 | |
| 3 | 3 | 1681.403 | 1681.381 | 1681.383 | 1681.384 | ||
| 2 | 4 | 1665.409 | 1665.387 | 1665.385 | |||
| 1 | 5 | 1649.414 | 1649.393 | ||||
| 0 | 6 | 1633.419 | 1633.396 | ||||
| 7 | 7 | 0 | 2017.452 | 2017.424 | 2017.435 | 2017.432 | 2017.455 |
| 6 | 1 | 2001.457 | 2001.430 | 2001.438 | 2001.437 | 2001.464 | |
| 5 | 2 | 1985.462 | 1985.437 | 1985.443 | 1985.440 | 1985.513 | |
| 4 | 3 | 1969.467 | 1969.438 | 1969.445 | 1969.444 | ||
| 3 | 4 | 1953.472 | 1953.452 | 1953.445 | |||
| 2 | 5 | 1937.477 | 1937.452 | ||||
| 1 | 6 | 1921.482 | 1921.460 | ||||
| 0 | 7 | 1905.487 | 1905.457 | ||||
| 8 | 8 | 0 | 2305.515 | 2305.487 | 2305.505 | 2305.492 | 2305.539 |
| 7 | 1 | 2289.520 | 2289.494 | 2289.516 | 2289.500 | 2289.527 | |
| 6 | 2 | 2273.525 | 2273.496 | 2273.507 | 2273.502 | ||
| 5 | 3 | 2257.530 | 2257.487 | 2257.515 | 2257.501 | ||
| 4 | 4 | 2241.535 | 2241.489 | 2241.514 | 2241.503 | ||
| 3 | 5 | 2225.540 | 2225.520 | ||||
| 2 | 6 | 2209.545 | 2209.521 | ||||
| 1 | 7 | 2193.551 | 2193.522 | ||||
| 0 | 8 | 2177.556 | 2177.515 | ||||
| 9 | 9 | 0 | 2593.578 | 2593.547 | 2593.596 | 2593.563 | |
| 8 | 1 | 2577.583 | 2577.547 | 2577.579 | 2577.571 | ||
| 7 | 2 | 2561.589 | 2561.553 | 2561.578 | 2561.568 | ||
| 6 | 3 | 2545.594 | 2545.560 | 2545.586 | 2545.563 | ||
| 5 | 4 | 2529.599 | 2529.582 | 2530.574 | |||
| 4 | 5 | 2513.604 | 2513.587 | ||||
| 3 | 6 | 2497.609 | 2497.585 | ||||
| 2 | 7 | 2481.614 | 2481.588 | ||||
| 1 | 8 | 2465.619 | 2465.579 | ||||
| 10 | 10 | 0 | 2881.642 | 2881.618 | 2881.635 | ||
| 9 | 1 | 2865.647 | 2865.606 | 2865.632 | |||
| 8 | 2 | 2849.652 | 2849.642 | 2849.617 | |||
| 7 | 3 | 2833.657 | 2833.641 | 2833.696 | 2833.649 | ||
| 6 | 4 | 2817.662 | 2817.626 | ||||
| 5 | 5 | 2801.667 | 2801.656 | ||||
| 4 | 6 | 2785.672 | 2785.670 | ||||
| 3 | 7 | 2769.677 | 2769.657 | ||||
| 2 | 8 | 2753.682 | 2753.680 | ||||
| 1 | 9 | 2737.687 | 2737.666 | ||||
| 11 | 11 | 0 | 3169.705 | 3169.693 | |||
| 10 | 1 | 3153.710 | 3153.685 | ||||
| 9 | 2 | 3137.715 | 3136.719 | ||||
DP: Degree of polymerization; (epi)cat: (epi)catechin units; (epi)afz: (epi)afzelechin units; M: monoisotopic molecular mass.