Pyrogallol impairs staphylococcal biofilm formation via induction of bacterial oxidative stress.

Aims: To examine the effect of the phenolic compound pyrogallol on staphylococcal biofilm formation.

Methods And Results: In crystal violet biofilm assays, pyrogallol-reduced biofilm formation in Staphylococcus epidermidis ATCC 35984, Staph. epidermidis NRRL-B41021, Staphylococcus aureus USA300, and Staph.