Table 5.
Quantitative determination of seven flavonoids in 18 samples of C. paliurus leaves a.
| Sample No. | Content (mg g−1) | |||||||
|---|---|---|---|---|---|---|---|---|
| Quercetin-3-O-glucuronide | Quercetin-3-O-galactoside | Isoquercitrin | Kaempferol-3-O-glucuronide | Kaempferol-3-O-glucoside | Quercetin-3-O-rhamnoside | Kaempferol-3-O-rhamnoside | TFC b | |
| S1 | 2.15 ± 0.06c | 0.79 ± 0.02ab | 0.37 ± 0.02f | 1.16 ± 0.00gh | 0.19 ± 0.00jk | 0.21 ± 0.00e | 1.48 ± 0.02f | 6.35 ± 0.12de |
| S2 | 1.60 ± 0.05d | 0.52 ± 0.02d | 0.31 ± 0.01g | 1.13 ± 0.01h | 0.22 ± 0.01i | 0.14 ± 0.00gh | 1.04 ± 0.02h | 4.95 ± 0.12g |
| S3 | 2.09 ± 0.11c | 0.71 ± 0.04c | 0.55 ± 0.02c | 1.19 ± 0.06gh | 0.27 ± 0.01fg | 0.24 ± 0.01d | 1.26 ± 0.06g | 6.29 ± 0.38de |
| S4 | 2.14 ± 0.01c | 0.42 ± 0.01f | 0.20 ± 0.01i | 1.39 ± 0.03e | 0.24 ± 0.00h | 0.24 ± 0.00d | 2.00 ± 0.14c | 6.63 ± 0.15de |
| S5 | 1.67 ± 0.01d | 0.55 ± 0.00d | 0.51 ± 0.00d | 1.15 ± 0.00h | 0.43 ± 0.00c | 0.22 ±0.00e | 2.17 ± 0.08b | 6.70 ± 0.06d |
| S6 | 0.79 ± 0.01g | 0.53 ± 0.00d | 0.30 ± 0.00gh | 0.81 ± 0.01j | 0.20 ± 0.01ijk | 0.11 ± 0.01i | 0.81 ± 0.00i | 3.55 ± 0.06h |
| S7 | 2.56 ± 0.01b | 0.82 ± 0.01a | 0.51 ± 0.01d | 1.30 ± 0.01ef | 0.25 ± 0.01gh | 0.31 ± 0.00b | 1.73 ± 0.01d | 7.48 ± 0.02c |
| S8 | 3.98 ± 0.09a | 0.46 ± 0.00e | 0.53 ± 0.01cd | 2.30 ± 0.08a | 0.30 ± 0.02de | 0.43 ± 0.02a | 2.63 ± 0.1a | 10.63 ± 0.33a |
| S9 | 2.11 ± 0.09c | 0.40 ± 0.01fg | 0.19 ± 0.01i | 1.64 ± 0.01d | 0.21 ± 0.01ij | 0.19 ± 0.01f | 1.57 ± 0.05ef | 6.32 ± 0.10de |
| S10 | 1.09 ± 0.05f | 0.38 ± 0.02g | 0.21 ± 0.01i | 0.83 ± 0.04ij | 0.16 ± 0.01l | 0.15 ± 0.01gh | 0.82 ± 0.041i | 3.65 ± 0.18h |
| S11 | 1.22 ± 0.06e | 0.44 ± 0.02ef | 0.29 ± 0.01gh | 1.17 ± 0.06gh | 0.42 ± 0.02c | 0.12 ± 0.01hi | 1.16 ± 0.16gh | 4.81 ± 0.24g |
| S12 | 0.86 ± 0.01g | 0.41 ± 0.01fg | 0.28 ± 0.01h | 1.25 ± 0.01fg | 0.30 ± 0.00de | 0.13 ± 0.00h | 0.57 ± 0.01j | 3.80 ± 0.02h |
| S13 | 0.50 ± 0.00h | 0.11 ± 0.00h | 0.05 ± 0.00k | 0.67 ± 0.01k | 0.11 ± 0.01m | 0.08 ± 0.00j | 0.55 ± 0.01j | 2.07 ± 0.02i |
| S14 | 1.07 ± 0.03f | 0.78 ± 0.01b | 0.37 ± 0.01f | 1.68 ± 0.06d | 0.28 ± 0.01ef | 0.30 ± 0.00b | 1.71 ± 0.01de | 6.20 ± 0.06e |
| S15 | 1.64 ± 0.07d | 0.69 ± 0.03c | 0.44 ± 0.02e | 1.95 ± 0.10c | 0.31 ± 0.02d | 0.25 ± 0.01cd | 1.26 ± 0.10gh | 6.56 ± 0.48de |
| S16 | 0.16 ± 0.00i | 0.80 ± 0.00ab | 0.74 ± 0.00b | 0.57 ± 0.00l | 2.04 ± 0.00a | 0.26 ± 0.00c | 1.23 ± 0.00g | 5.80 ± 0.00f |
| S17 | 2.15 ± 0.01c | 0.56 ± 0.01d | 1.27 ± 0.01a | 2.21 ± 0.01b | 1.81 ± 0.01b | 0.22 ± 0.00e | 1.94 ± 0.00c | 10.15 ± 0.05b |
| S18 | 0.58 ± 0.03h | 0.13 ± 0.01h | 0.10 ± 0.01j | 0.91 ± 0.05i | 0.18 ± 0.01kl | 0.06 ± 0.00j | 0.38 ± 0.05k | 2.36 ± 0.11i |
a Data are expressed as mean ± SD of duplicate experiments. Different letters indicate significant differences among the C. paliurus from different geographic regions in flavonoid content (p ≤ 0.05 by Duncan’s test); b TFC: content of total seven flavonoids.