Table 6.
Contents of six compounds in the stem and root bark of the five Ulmus species.
| Parts | Species | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|---|
| Stem bark | UD | 1.31 ± 0.06 c | 22.72 ± 2.39 a | 1.07 ± 0.19 b | 1.52 ± 0.19 b | 0.67 ± 0.00 d | 0.32 ± 0.05 b |
| UP | 2.78 ± 0.21 b | 14.08 ± 1.03 b | 6.81 ± 0.51 a | 0.49 ± 0.04 d | 1.06 ± 0.07 b | 0.25 ± 0.01 c | |
| UM | 1.40 ± 0.09 c | 21.21 ± 3.31 a | 1.19 ± 0.05 b | 1.83 ± 0.20 b | 0.75± 0.12 d | 0.31 ± 0.01 b | |
| UL | 1.44 ± 0.03 c | 15.95 ± 0.33 b | 0.65 ± 0.02 c | 0.81 ± 0.06 c | 0.93 ± 0.07 c | 0.21 ± 0.01 d | |
| UPU | 9.72 ± 1.08 a | 23.62 ± 0.71 a | 0.62 ± 0.00 c | 2.92 ± 0.34 a | 5.65 ± 0.57 a | 0.45 ± 0.04 a | |
| Root bark | UD | 2.96 ± 0.11 a | 20.02 ± 0.48 b | 0.56 ± 0.02 c | 0.24 ± 0.01 e | 0.66 ± 0.02 e | 0.46 ± 0.01 a |
| UP | 1.15 ± 0.07 c | 4.40 ± 1.38 d | 1.63 ± 0.17 a | 0.13 ± 0.02 d | 0.74 ± 0.10 d | 0.18 ± 0.03 d | |
| UM | 2.63 ± 0.03 b | 26.61 ± 0.95 a | 0.51 ± 0.05 c | 0.93 ± 0.07 b | 1.83 ± 0.14 a | 0.32 ± 0.01 b | |
| UL | 3.21 ± 0.10 a | 24.89 ± 0.26 a | 0.57 ± 0.04 c | 1.78 ± 0.10 a | 1.50 ± 0.15 b | 0.25 ± 0.02 c | |
| UPU | 1.26 ± 0.01 c | 7.94 ± 0.26 c | 1.13 ± 0.01 b | 0.51 ± 0.02 c | 0.95 ± 0.15 c | 0.32 ± 0.05 b |
Data are expressed as mean ± SD (mg/g dry weight) of three independent experiments. Different upper letters in the same column indicate a significant difference (p < 0.05) among the samples. UD, Ulmus davidiana var. japonica; UP, U. parvifolia; UM, U. macrocarpa; UL, U. laciniata; UPU, U. pumila. 1, (-)-catechin; 2, (-)-catechin-7-O-β-D-apiofuranoside; 3, (-)-catechin-7-O-α-L-rhamnopyranoisde; 4, (-)-catechin-7-O-β-D-xylopyranoside; 5, (-)-catechin-7-O-β-D-glucopyranoside; 6, (-)-catechin-5-O-β-D-apiofuranoside.