Staphylococcus aureus ATCC 25923, Bacillus cereus PTCC 1154,Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853,and Salmonella typhimurium ATCC 14028 were provided by the Iranian Research Organization for Science and Technology(Tehran, Iran). Stock cultures of the studied bacteria were grownin Mueller–Hinton agar (MHA) at 37◦C for 24 h before the tests.