Figure 5

Antibiofilm activity of crude lipase produced by A. niger isolated from nuts against some human pathogenic bacteria. (A) Escherichia coli; (B) Pseudomonas aeruginosa; (C) Proteus mirabilis; (D) methicillin-resistant Staphylococcus aureus (MRSA). C: control (amount of biofilm of the tested strains). 20, 30, 40, 50, 60, and 70 µl: added volumes of crude lipase for determination the optimum volume in inhibiting biofilm. Shown are the averages from at least three independent measurements. The error bars indicate the standard deviations. Asterisk: means values are highly significant compared with control.