Figure 2.

Antibacterial activity of synthetic peptides identified in the mucus of S. lalandi and S. violacea against Escherichia coli. The growth of E. coli is expressed in colony-forming units (CFU/mL) after application of 100 µM of synthetic peptides. As a negative control (C−) culture media without bacterial inoculum was used. Positive control (C+) was growth of E. coli without treatment. Treatment with gentamicin was used as positive antibacterial activity (G). Significant differences with respect to C+ are indicated with a different letter (p > 0.05).