Table 1. E. coli behaviour after 8 hours of incubation in different substrates (mean ± standard deviation).
| Substrate | Log N/N0 (CFU/mL) | |||
|---|---|---|---|---|
| Inoculum size 103 | Inoculum size106 | |||
| Control (LB pH = 7) | 5.47± 0.075 A | 3.31±0.018 A | ||
| pH 5.0 | pH 6.2 | pH 5.0 | pH 6.2 | |
| Acetic Acid Control | -0.11±0.126 B | 4.39±0.041 B | -0.09±0.004 B | 3.34±0.033 A |
| Crustacean chitosan | -0.12±0.053 B | -3.09±0.062 C | -0.06±0.026 B | -3.3±0.080 B |
| Insect chitosan | -0.11±0.017 B | -1.76±0.012 D | -0.07±0.0236 B | -1.46±0.045 C |
Figures with the same letter are not significantly different by columns. Different letters indicate significant differences (p value≤0.05). Negative figures mean inactivation and positive figures mean growth.