Evaluation of antibacterial activity and MIC detection of oleogum resins of Boswellia carteri against infections agents of mouth and gastrointestinal tract

Bacterial resistance to antibiotics is main challenge in the treatment of infectious diseases. Thus، investigation for alternative drugs is an essential phenomenon. This study designed to aim to evaluate the antimicrobial property of essential oil of Boswellia carterii against bacterial and fungal causative agents of the mouth، gastrointestinal tract infections and antibiotic-resistant species. Essential oils were isolated through microdilution tube using Clevenger''s method. The antimicrobial activities of the essential oils were individually evaluated against different microorganisms including pathogenic fungus (candida albican and three type of aspergillus)، Gram-positive (Streptococcus salivarius، Streptococcus sanguis and Lactobacillus) and Gram-negative (Salmonella، Pseudomonas، Shigella and E. coli) bacteria strains. The essential oils have activity against all eleven microbes and the best activity determined against Streptococcus (5. 3 μg/ml) were obtained. On the other hand، pseudomonas aeruginosa showed the most resistant among bacterial and fungal agent (85 μg/ml). Antimicrobial effects of B. carterii on resistance pathogens such as Pseudomonas aeroginosa and candida albicans revealed the necessity of performing expanded research about composition and property of this plant.