Table 2.
Bactericidal activity (%) of different natural compounds against Vibrio harveyi and V. anguillarum. *–statistically significant difference in antimicrobial activity at p < 0.05.
| Co | Vibrio Harvey | Vibrio anguillarum | ||||
|---|---|---|---|---|---|---|
| 0.1 µM | 1 µM | 10 µM | 0.1 µM | 1 µM | 10 µM | |
| BTS | −8.8 ± 1.8 | 3.5 ± 11.6 | 40.0 ± 0.7 * | 4.9 ± 11.8 | 49.2 ± 11.6 | 96.4 ± 1.7 * |
| BTN | −21.6 ± 6.0 | −0.088 ± 16.3 | 13.1 ± 5.1 | −10.8 ± 19.9 | 19.6 ± 3.7 * | 30.5 ± 2.0* |
| CAM | −23.6 ± 2.6 | 7.7 ± 10.7 | 9.3 ± 7.4 | −38.8 ± 22.0 | −27.8 ± 19.0 | −17.4 ± 9.3 |
| CED | −44.9 ± 7.7 | −23.8 ± 6.9 | −2.4 ± 26.9 | −6.9 ± 3.0 | 24.1 ± 8.0 * | 30.8 ± 6.4 * |
| TCA | −47.7 ± 5.9 | −25.4 ± 14.6 | 13.2 ± 6.5 | −1.4 ± 13.0 | 8.15 ± 16.3 | 32.0 ± 9.0 * |
| CMR | −33.4 ± 3.9 | −21.2 ± 13.3 | −1.9 ± 7.6 | 1.5 ± 8.38 | 13.2 ± 13.4 | 17.3 ± 5.0 * |
| CRC | 2.1 ± 15.0 | 7.6 ± 2.1 | 10.4 ± 4.5 | 9.5 ± 7.5 | 24.5 ± 14.6 | 34.9 ± 1.2 * |
| DAS | −36.6 ± 6.8 | −36.4 ± 7.9 | −1.6 ± 0.7 | −11.3 ± 24.8 | −5.8 ± 11.7 | 46.8 ± 4.0 * |
| NDT | −0.9 ± 8.7 | 4.5 ± 16.7 | 13.7 ± 0.6 * | −61.9 ± 29.0 | −28.5 ± 24.1 | 9.1 ± 8.5 |
| EUC | −2.7 ± 8.7 | −1.9 ± 12.3 | 50.3 ± 6.8 * | −31.7 ± 155.9 | −34.1 ± 10.5 | 23.6 ± 3.1 |
| GAR | 20.9 ± 19.9 | 28.7 ± 6.2 * | 42.0 ± 1.3 * | −109.7 ± 84.2 | −46.0 ± 17.2 | −52.1 ± 31.4 |
| 4HR | 19.6 ± 31.5 | 34.7 ± 10.1 | 67.5 ± 14.1 * | −121.1 ± 10.9 | −76.1 ± 33.9 | −55.5 ± 31.6 |
| MCT | −4.9 ± 24.9 | 18.2 ± 10.9 | 40.1 ± 4.1 * | −73.0 ± 56.1 | −46.9 ± 32.0 | 17.9 ± 0.6 |
| PYR | −4.4 ± 21.0 | 5.6 ± 10.2 | 30.5 ± 5.2 * | −79.4 ± 14.2 | −40.5 ± 11.7 | −18.1 ± 4.2 |
Co: compounds; BTS: bithionate sodium; BTN: bitoscanate; CAM: camphor; CED: cedrol; TCA: (+)-trans-chrysanthemic acid; CMR: coumarin; CRC: curcumin; DAS: diallyl sulphide; NDT: N,N-diethyl-M-toluamide; EUC: eucalyptol; GAR: garlicin 80%; 4HR: 4-hexylresorcinol; MCT: monocrotaline; and PYR: pyrethrins 50%.