Has antimicrobial activity against Gram-negative bacterium E.coli ATCC 8739 (MIC=6.3 ug), against Gram positive bacteria S.aureus ATCC 6538 (MIC=3.1 ug), methicillin-resistant S.aureus ATCC 43300 (MIC=25 ug) and B.subtilis ATCC 6633 (MIC=25 ug). Has no activity against fungus C.albicans ATCC 90028