Microorganism Strain Origin Gram Stain Escherichia coli ATCC 25922 American Type Culture Collection G- Pseudomonas aeruginosa ATCC 27853 American Type Culture Collection G- Salmonella enterica ATCC 13076 American Type Culture Collection G- Listeria monocytogenes ATCC 7644 American Type Culture Collection G+ Staphylococcus saprophyticus ATCC 15305 American Type Culture Collection G+ Staphylococcus aureus ATCC 25923 American Type Culture Collection G+ Staphylococcus aureus ATCC 29213 American Type Culture Collection G+

Table 2: Microorganisms which were used to evaluate the antimicrobial activity.