Table 2.
Average of constitutive unit content (mole %), mean degree of polymerization and concentrations of condensed tannin in spine grape seeds.
| Grape seeds | Extension units(%) |
Terminal units(%) |
mDP | Concentration | ||||
|---|---|---|---|---|---|---|---|---|
| ECG | C | EC | ECG | C | EC | mg/g | ||
| Xiangzhenzhu | 8.49 ± 0.35 g | 2.53 ± 0.33c | 69.43 ± 0.31a | 6.08 ± 0.05 g | 1.59 ± 0.29d | 11.88 ± 0.09gh | 5.12 ± 0.08a | 7.48 ± 0.34b |
| Gaoshan #2 | 10.30 ± 0.21f | 1.7 ± 0.23d | 58.52 ± 0.34d | 12.78 ± 0.16e | 2.06 ± 0.04b | 14.67 ± 0.23de | 3.39 ± 0.28c | 4.18 ± 0.12d |
| Gaoshan #4 | 1.34 ± 0.24 k | 2.10 ± 0.07c | 58.60 ± 0.28d | 21.87 ± 0.09b | 1.65 ± 0.25d | 14.44 ± 0.31de | 2.63 ± 0.26d | 4.32 ± 0.22d |
| Gaoshan #5 | 17.95 ± 0.03c | 1.75 ± 0.17d | 42.67 ± 0.23 l | 18.41 ± 0.29c | 3.70 ± 0.21a | 15.51 ± 0.35bc | 2.66 ± 0.24d | 5.76 ± 0.17c |
| Zhilan | 13.48 ± 0.34d | 2.43 ± 0.30c | 57.23 ± 0.16e | 12.79 ± 0.15e | 1.82 ± 0.13c | 12.25 ± 0.18 g | 3.72 ± 0.20bc | 8.43 ± 0.31a |
| Junzi #1 | 1.88 ± 0.08 k | 4.76 ± 0.17a | 60.53 ± 0.33c | 16.17 ± 0.12d | 2.17 ± 0.12bc | 14.48 ± 0.34de | 3.05 ± 0.03c | 4.84 ± 0.11d |
| Junzi #2 | 11.41 ± 0.29e | 1.91 ± 0.06d | 61.83 ± 0.12b | 7.82 ± 0.13f | 0.95 ± 0.04e | 16.08 ± 0.05b | 4.02 ± 0.02b | 7.61 ± 0.28b |
| 5015 | 3.80 ± 0.14j | 0.94 ± 0.04e | 50.12 ± 0.08 h | 26.05 ± 0.03a | 2.21 ± 0.15bc | 16.88 ± 0.08a | 2.22 ± 0.15e | 3.12 ± 0.08e |
| 5044 | 5.54 ± 0.32i | 1.19 ± 0.13de | 49.76 ± 0.17 h | 26.59 ± 0.29a | 1.91 ± 0.06c | 15.01 ± 0.00 cd | 2.30 ± 0.21e | 3.35 ± 0.25e |
| 5049 | 12.62 ± 0.27de | 3.69 ± 0.22b | 51.47 ± 0.33 g | 16.15 ± 0.1d | 2.76 ± 0.17b | 13.32 ± 0.23f | 3.10 ± 0.07c | 5.79 ± 0.15c |
| 5059 | 6.99 ± 0.01 h | 2.39 ± 0.28c | 55.58 ± 0.30f | 18.18 ± 0.13c | 2.06 ± 0.05bc | 14.8 ± 0.15cde | 2.85 ± 0.10d | 4.33 ± 0.24d |
| 5055 | 27.54 ± 0.33a | 1.10 ± 0.07de | 41.40 ± 0.29 k | 16.52 ± 0.34d | 1.40 ± 0.29d | 12.03 ± 0.02gh | 3.34 ± 0.24c | 5.98 ± 0.02c |
| 5061 | 13.41 ± 0.29d | 2.37 ± 0.27c | 48.36 ± 0.26i | 20.82 ± 0.13bc | 2.53 ± 0.33b | 12.50 ± 0.35 g | 2.79 ± 0.15d | 4.13 ± 0.09d |
| 5063 | 25.85 ± 0.10b | 1.29 ± 0.21de | 43.66 ± 0.24j | 12.88 ± 0.08e | 2.21 ± 0.15bc | 14.11 ± 0.08e | 3.43 ± 0.30c | 8.82 ± 0.13a |
| 5064 | 26.25 ± 0.17b | 0.83 ± 0.12e | 39.45 ± 0.32 l | 20.66 ± 0.24bc | 1.37 ± 0.26d | 11.43 ± 0.31 h | 2.99 ± 0.01d | 5.95 ± 0.04c |
Note: ECG = (−)-epicatechin-3-O-gallate, C = (+)-catechin, EC = (−)-epicatechin, different lowercase letters in the same column showed significant difference in Tukey multiple comparisons at P < 0.05 level.