Table 3.
Anti-C. perfringens activity of commercially available Nigella sativa oil (BCSO) products.
| Black cumin seed oil products | Inhibition zone (mm) for BCSO dilutions tested against Cp#61 | Inhibition zone (mm) for BCSO dilutions tested against Cp#4 | ||||
|---|---|---|---|---|---|---|
| 1:10 | 1:20 | 1:30 | 1:10 | 1:20 | 1:30 | |
| A | 16 ± 2.12a,2 | 9.5 ± 0a | 7.5 ± 0.71a | 11 ± 0.71a | 8.5 ± 0.71a | 0 ± 0a |
| B | 13.75 ± 0.35a,b | 7.75 ± 0.35b | 7 ± 0a | 9 ± 0b | 7 ± 0b | 0 ± 0a |
| C | 8.25 ± 1.06c | 7.75 ± 0.35b | 0 ± 0b | 0 ± 0c | 0 ± 0c | 0 ± 0a |
| D | 10.25 ± 0.35b,c | 7.75 ± 0.35b | 0 ± 0b | 8.25 ± 0.35b | 0 ± 0c | 0 ± 0a |
| E | 0 ± 0d | 0 ± 0c | 0 ± 0b | 0 ± 0c | 0 ± 0c | 0 ± 0a |
a,b,c
Different letters in the same column indicate significant difference (P < 0.05), Tukey's test.
1
C. perfringens strain Cp#6 and strain Cp#4.
2
Mean ± S.D. is average of 3 replicates, with TQ (3.2 µg/disk concentration) as positive control (zone of 12.35 ± 0.34 mm against Cp#6, zone of 7.55 ± 0.11 mm against Cp#4) and DMSO as negative control.