| Samples | Total flavonoids content (mg rutin g−1 d.w.) | DPPH (mg ascorbic acid g−1 d.w.) | ABTS (mg ascorbic acid g−1 d.w.) |
| Hangzhou | 14.87 ± 0.02 | 20.51 ± 0.06 | 33.93 ± 0.11 |
| Jinhua | 17.08 ± 0.03 | 25.65 ± 0.03 | 48.67 ± 0.06 |
| Zhengzhou | 19.50 ± 0.03 | 31.08 ± 0.03 | 54.26 ± 0.12 |
| Nanjing | 17.40 ± 0.03 | 27.01 ± 0.03 | 47.86 ± 0.07 |
| Guangzhou | 17.50 ± 0.03 | 24.68 ± 0.05 | 42.93 ± 0.06 |
| Guilin | 19.60 ± 0.02 | 25.94 ± 0.05 | 41.62 ± 0.12 |
| Nanning | 13.17 ± 0.02 | 21.98 ± 0.03 | 37.99 ± 0.07 |
| Chengdu | 19.16 ± 0.02 | 26.70 ± 0.05 | 49.51 ± 0.06 |
| Fuzhou | 18.27 ± 0.02 | 27.97 ± 0.03 | 42.05 ± 0.06 |
| Zhangzhou | 15.52 ± 0.05 | 21.69 ± 0.05 | 37.41 ± 0.07 |
| Changchun | 22.82 ± 0.02 | 26.90 ± 0.06 | 54.83 ± 0.12 |
| Shenyang | 14.88 ± 0.02 | 21.11 ± 0.08 | 40.55 ± 0.13 |