Maybe in the future : cold plasma to kill biofilms

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Pseudomonas aeruginosa Biofilm Inactivation: Decreased Cell Culturability,

Adhesiveness to Surfaces, and Biofilm Thickness Upon High-Pressure Nonthermal

Plasma Treatment.

Zelaya AJ, Stough G, Rad N, Vandervoort K, Brelles-Mariño G.

Source

Biological Sciences Department, California State Polytechnic University, Pomona,

CA 91768 USA ( ajzelaya@... ).

Abstract

Bacterial biofilms are more resilient to standard killing methods than

free-living bacteria. Pseudomonas aeruginosa PAO1 biofilms grown on borosilicate

coupons were treated with gas-discharge plasma for various exposure times.

Almost 100% of the cells were inactivated after a 5-min plasma exposure. Atomic

force microscopy was used to image the biofilms and study their micromechanical

properties. Results show that the adhesiveness to borosilicate and the thickness

of the Pseudomonas biofilms are reduced upon plasma treatment.