Table 4.
Effect of chitosan on biofilm formation of Xanthomonas strains after 24 h of incubation.
| Strain number | OD570 reduction relative to the control (%) | ||
|---|---|---|---|
| Chitosan A | Chitosan B | ||
| LMG849 | 18.05 ± 2.02 de | 28.56 ± 3.43 ef | |
| LMG5401 | 32.96 ± 3.52 g | 21.25 ± 2.37 cd | |
| LMG5402 | 27.53 ± 2.19 fg | 22.15 ± 3.46 de | |
| LMG5403 | 28.70 ± 2.18 g | 14.91 ± 1.77 abc | |
| LMG8675 | 7.31 ± 1.04 a | 16.79 ± 1.76 bcd | |
| LMG8676 | 9.36 ± 1.26 ab | 11.68 ± 1.13 ab | |
| R22578 | 14.13 ± 1.60 bcd | 10.37 ± 1.72 ab | |
| R22579 | 9.72 ± 0.64 ab | 11.73 ± 1.07 ab | |
| R22580 | 10.90 ± 1.04 abc | 9.47 ± 0.84 a | |
| HN-1 | 15.47 ± 1.75 cd | 12.82 ± 1.63 ab | |
| HN-18 | 28.09 ± 2.17 fg | 42.52 ± 3.57 g | |
| HN-20 | 23.07 ± 1.96 ef | 35.09 ± 2.96 f | |
| LSD0.05 | 5.51 | 6.84 | |
| ANOVA P-values | |||
| Chitosan | 0.25 | ||
| Bacteria | <0.001 | ||
| Chitosan × Bacteria | <0.001 | ||
The concentration of chitosan is 0.10 mg/mL. Initial concentration of bacteria is 107 cfu/mL. Data from the repeated experiment were pooled and presented as means ± standard error. Means in a column followed by the same letter are not significantly different according to LSD test (P = 0.05).