Inocula of S. aureus, E. faecalis, B. subtilis, E. cloacae, A. brasiliensis, P. aeruginosa, C. albicans, K. pneumoniae and F. solani were prepared from lyophilised pellets according to the manufacturer’s protocols or from fresh culture according to McFarland standards to obtain 1.0×107 colony forming units (CFU/mL in physiological solution (0.9% (w/v) NaCl); Merck-Sigma-Aldrich, Darmstadt, Germany.
Tryptone soya broth (20 mL; Bioculturalab, Italy) was used as growth control for C. albicans, A. brasiliensis and F. solani, and thioglycolate medium (20 mL; Bioculturalab) was used as growth control for S. aureus, B. subtilis, P. aeruginosa and K. pneumoniae. Nutrient broth (Nutrient Broth, 20 mL; BioLife, Italy) medium was used as growth control for E. faecalis and E. cloacae.