Fig. 1.

Biofilm formation and disruption in a BioFlux channel. The images are phase-contrast images and show fully formed biofilms after 48 h of incubation at 30 °C, and the images were recorded with a microscope Evon (10×) (17 % light). a P. aeruginosa ATCC 15442 biofilm before treatment. b P. aeruginosa ATCC 15442 after treatment with rhamnolipid (0.04 %) and caprylic acid (0.01 %). c S. aureus ATCC 9144 before treatment. d S. aureus ATCC 9144 after treatment with rhamnolipid (0.04 %) and caprylic acid (0.01 %). e Mixed culture (P. aeruginosa ATCC 15442/S. aureus ATCC 9144). f Mixed culture after treatment with rhamnolipid (0.04 %) and caprylic acid (0.01 %). g P. aeruginosa ATCC 15442 before treatment. h P. aeruginosa ATCC 15442 after treatment with PBS 1×