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Table 1 Diameter (mm) of clearing zones on the oil surface obtained from oil spreading assay with different concentrations of crude biosurfactant

From: Antimicrobial and antibiofilm potential of biosurfactants isolated from lactobacilli against multi-drug-resistant pathogens

Sample PBS Surfactin Crude biosurfactant Crude biosurfactant
    L. rhamnosus L. jensenii
50 mg/ml 0.0 15.0 ± 1.0 6.8 ± 0.5 7.6 ± 0.5
25 mg/ml 0.0 15.0 ± 1.0 6.0 ± 1.4 6.0 ± 1.7
12.5 mg/ml 0.0 14.6 ± 0.5 5.3 ± 0.5 5.6 ± 1.1
6.25 mg/ml 0.0 13.0 ± 0.5 4.1 ± 0.1 3.8 ± 0.2
  1. PBS was used as a negative control with a clearing zone diameter of 0.0 mm. Surfactin was used as a positive control. Results shown are the average of ± SD of three experiments performed in triplicate.