Authors : R. Arab and G.H. Ettehad
Abstract: According to increased bacterial resistance to common antibiotics, tendency toward using herbal drugs is increasing. Many researches have been executed about antibacterial and preservative effects of herbal essence like the one essences extracted from plants of Lamiaceae family (like Shiraz oregano herb). In this study, antibacterial effects of Shiraz oregano on Enterobacteriacea species, is evaluating. To provide essence 50 g of dried ground leaf of plant beside 700 mL of distilled water were poured into flask and with one mL min 1 velocity, distillation the essence was extracted. Determination of microbial sensitivity was performed in the Kirby Bauer method. Minimal Inhibitory Concentration (MIC) was 156 �g mL 1 for 6 of 8 Staphylococcus aurous and it was 132 �g m 1 for other two. MIC varies from 78-624 for Enterobacteriacea. Inhibitory effect of garlic extract for Pseudomonas aeroginosa was lower in comparison with other gram-negative bacteria. According to obtained results from this research and increasing limitations of chemical antimicrobial usage like side effects and drug resistance, there is need to replacement of these substances with natural ones and herbal essences and this issue can pave the way for studies about replacement of mentioned substances, to preserve alimentary substances and controlling of human�s disease.
R. Arab and G.H. Ettehad , 2008. Effects of Zataria Multiflora Boiss on Common Pathogenic Gram-Positive Cocci and Gram-Negative Bacilli. Journal of Animal and Veterinary Advances, 7: 695-697.