4.4.1. Pathogenic Microbial Strains

The pathogenic microorganisms tested included three Gram-positive bacteria, i.e., *B. subtilis* 6683, *E. faecium* E5, *S. aureus* ATCC 6538, and two Gram-negative bacteria, namely *E. coli* ATCC 8739, *P. aeruginosa* ATCC 27853, as well as a fungal *C. albicans* 393 strain.
