Table 2.
Mean of the three measures of inhibition zone diameters (mm) and standard deviation obtained for the disks impregnated with each tested compound against E. coli (EC 61 and EC 67), S. Typhimurium (SP 11 and CECT 443), and C. perfringens (CP 34 and CP52) isolates.
| Formic acid | Sodium salt of coconut fatty acid distillates | Cinnamaldehyde | Thymol | Carvacrol | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Isolate | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
| EC 61 | 36.00* | 1.73 | 0.00 | 0.00 | 33.00 | 2.65 | 28.00 | 3.46 | 42.50* | 3.54 |
| EC 67 | 37.67* | 0.58 | 0.00 | 0.00 | 24.33 | 1.53 | 26.67 | 3.06 | 38.00* | 3.46 |
| SP 11 | 35.33* | 0.58 | 0.00 | 0.00 | 23.67 | 3.21 | 26.67 | 5.77 | 43.33* | 3.06 |
| CECT 443 | 39.33 | 1.15 | 0.00 | 0.00 | 39.00 | 1.00 | 48.00* | 2.00 | 60.67* | 1.15 |
| CP 34 | 48.00* | 2.00 | 0.00 | 0.00 | 36.67 | 5.03 | 28.33 | 3.21 | 44.00* | 3.46 |
| CP 52 | 55.33* | 4.16 | 0.00 | 0.00 | 44.67 | 2.31 | 30.00 | 2.00 | 48.33* | 0.58 |
*
Denotes the means (mm) which showed statistically significant differences compared with the rest (p < 0.05).