| Plant used for extracts | Diameter of growth inhibited zone (mm) |
| Control | 0.0 ± 0.0 |
| Acori Gramineri Rhizoma | 7.0 ± 0.0 |
| Amomi Tsao-ko Fructus | 8.0 ± 0.0 |
| Angelicae Tenuissimae Radix | 8.8 ± 0.4 |
| Cinnamomi Cortex | 34.8 ± 2.4 |
| Cinnamomi Ramulus | 19.8 ± 1.7 |
| Cnidii Rhizoma | 9.0 ± 0.0 |
| Cocculi Radix | 9.3 ± 1.4 |
| Flower of Rosa multiflora | 8.2 ± 0.4 |
| Impatientis Semen | 14.8 ± 0.4 |
| Magnoliae Cortex | 19.8 ± 1.5 |
| Moutan Cortex Radicis | 12.2 ± 0.8 |
| Phellodendri Cortex | 7.3 ± 0.3 |
| Polygalae Radix | 9.3 ± 0.5 |
| Rhizome of Kaempferia galangal | 7.3 ± 0.5 |
| Sanguisorbae Radix | 8.0 ± 0.0 |
| Scutellariae Radix | 7.5 ± 0.0 |
| Syzygii Flos | 16.8 ± 1.0l |