Table 4.
Characteristics of Duo-Specie Biofilms of Pseudomonas aeruginosa and Staphylococcus aureus Cell surface hydrophobicity, Planktonic population and SCVs or persister cells population at pre and post biofilm stage
Combination | S # | Biofilm OD578a | Cell surface hydrophobicity |
Pre-biofilm population after 24 hr of incubation |
Biofilm population after 48 hr of incubation |
SCVs or persister cell population of biofilms |
|||||
---|---|---|---|---|---|---|---|---|---|---|---|
At 18 hr | At 24 hr | At 48 hr | P. aeruginosa | S. aureus | P. aeruginosa | S. aureus | P. aeruginosa | S. aureus | |||
Biofilm positive isolates | 1 | 0.97 | 0.23 | 0.49 | 0.88 | 1x104 | 1x105 | 1x103 | 1x101 | 1x102 | <10CFU |
2 | 0.99 | 0.21 | 0.63 | 0.87 | 1x104 | 1x105 | 1x103 | <10CFU | 1x102 | <10CFU | |
3 | 0.93 | 0.21 | 0.47 | 0.81 | 1x104 | 1x105 | 1x103 | <10CFU | 1x102 | <10CFU | |
4 | 0.98 | 0.28 | 0.57 | 0.88 | 1x104 | 1x104 | 1x102 | <10CFU | 1x102 | <10CFU | |
5 | 0.97 | 0.31 | 0.61 | 0.82 | 1x104 | 1x105 | 1x102 | <10CFU | 1x102 | <10CFU | |
Biofilm negative isolates | 1 | BND | 0.19 | 0.27 | 0.28 | 1x104 | 1x105 | BND | BND | BND | BND |
2 | BND | 0.18 | 0.27 | 0.31 | 1x104 | 1x105 | BND | BND | BND | BND | |
3 | 0.61 | 0.31 | 0.39 | 0.57 | 1x104 | 1x105 | 1x102 | <10CFU | <10CFU | <1CFU | |
4 | BND | 0.13 | 0.21 | 0.25 | 1x104 | 1x105 | BND | BND | BND | BND | |
5 | BND | 0.21 | 0.19 | 0.35 | 1x104 | 1x105 | BND | BND | BND | BND | |
Biofilm positive S. aureus with biofilm negative P. aeruginosa |
1 | BND | 0.19 | 0.26 | 0.33 | 1x105 | 1X103 | BND | BND | BND | BND |
2 | BND | 0.21 | 0.28 | 0.31 | 1x104 | 1X104 | BND | BND | BND | BND | |
3 | 0.58 | 0.26 | 0.47 | 0.66 | 1x105 | 1X104 | 1x103 | <10CFU | <10CFU | <10CFU | |
4 | 0.66 | 0.19 | 0.49 | 0.73 | 1x105 | 1X103 | 1x103 | <10CFU | <10CFU | <10CFU | |
5 | 0.63 | 0.23 | 0.53 | 0.79 | 1x104 | 1X103 | 1x103 | <10CFU | <10CFU | <10CFU | |
Biofilm negative S. aureus with biofilm positive P. aeruginosa |
1 | 0.66 | 0.22 | 0.56 | 0.77 | 1x104 | 1X104 | 1X103 | <10CFU | 1x102 | <10CFU |
2 | 0.81 | 0.22 | 0.49 | 0.81 | 1x104 | 1X104 | 1X103 | <10CFU | 1x102 | <10CFU | |
3 | 0.89 | 0.21 | 0.53 | 0.83 | 1x104 | 1X104 | 1X103 | <10CFU | <10CFU | <10CFU | |
4 | 0.82 | 0.23 | 0.52 | 0.84 | 1x104 | 1X104 | 1X103 | 1x102 | 1x102 | <10CFU | |
5 | 0.88 | 0.25 | 0.55 | 0.82 | 1x104 | 1X104 | 1X103 | 1x102 | 1x102 | <10CFU |