Microbicidal kinetics. P. aeruginosa strain 2 was exposed to the indicated concentrations of novispirin G10 in a medium composed of 100 mM NaCl, 10 mM sodium phosphate buffer (pH 7.4), and 0.3 mg of Trypticase soy broth powder/ml. Aliquots were removed after 5 and 10 min, diluted, spread on Trypticase soy agar plates, and incubated overnight to allow colony development.