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Table 1 Qualitative and quantitative determination of the biofilm formation by Bacillus isolates

From: Potential exploitation of Bacillus flexus biofilm against the cowpea weevil, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)

Sample no.No. of isolatesCRAOD 570 nm
11-0.050
2-0.031
3+0.143
4-0.062
25-0.027
6-0.045
7-0.043
8+0.165
39-0.084
10-0.092
11++0.298
12-0.056
413++0.433
14-0.041
15++0.312
16++0.344
17-0.061
18-0.055
19-0.021
520-0.031
21-0.041
22+0.138
23-0.077
24-0.068
625+0.240
26-0.066
27-0.054
28-0.087
29+0.211
30-0.059
  1. OD < 0.120 = No biofilm; OD 0.120:0.240 = Moderate; OD > 0.240 = Strong
  2. CRA Congo red agar