Table 1.
Zone of inhibition of different extracts of Ginkgo biloba.
| Microorganisms | Diameter of inhibition zone (mm)* | ||||||
|---|---|---|---|---|---|---|---|
| H | C | E | M | E | A | G | |
| A. tumefaciens | 16 ± 0.8 | 19 ± 0.6 | 14 ± 1.0 | 15 ± 0 | na | na | 20 ± 0.6 |
| B. subtilis | 20 ± 1.7 | 18 ± 0 | 19 ± 0.6 | 19 ± 0.6 | na | na | 20 ± 0.4 |
| E. coli | 15 ± 0 | 14 ± 0.3 | 19 ± 1.0 | 19 ± 0.6 | na | na | 21 ± 1.2 |
| E. chrysanthemi | 16 ± 0.5 | 17 ± 0.8 | 16 ± 0.6 | 17 ± 0.3 | na | na | 21 ± 1.2 |
| X. phaseoli | 16 ± 0.8 | 16 ± 0.6 | 19 ± 1.0 | 21 ± 0.2 | na | na | 21 ± 0.7 |
*All the values are mean ± SEM of three determinations. H, C, E, M: hexane, chloroform, ethanol, methanol; E, A, G: erythromycin, ampicillin, gentamycin; na: not active.