recently, the effects of antimicrobial activity of silver nanoparticles was considered by researcher because of bacterial resistance to antimicrobial agents in chemical.the aim of this study was to evaluate the antimicrobial activity of the gold nanoparticles on escherichia coli. gold nanoparticles are chemically synthesized. standard strain of e. coli was cultured in a nutrient broth. minimum ...

introduction: in this study, the chemical composition and antimicrobial activity of essential oil of ziziphora clinopodiodes and its potential application as a natural preservative in reducing the indigenous microbial population of hamburger were investigated. method: essential oil of ziziphora clinopodiodes cultivated in iran was obtained by hydro-distillation method (hdm). chemical compositio...

abstract       background and objective: due to the continuous increase of multidrug-resistant acinetobacter baumannii strains around the world, decision making for an effective treatment of infections caused by this organism depends on the results of antimicrobial susceptibility tests. in this study, the validity of disk diffusion and e-test methods was assessed by their comparison with the re...

the infections risk related to pathogenic germs increases at the present time considering the increased resistance which certain microbes acquire, whose usual antibiotics are ineffective to treat the infectious disease. the aim of this study was to determine antimicrobial effect of the aqueous and ethanolic extracts of lavandula stoechas l. and rosmarinus officinalis l. on listeria monocytogene...

in our study, bioactivity of essential oil extracted from ginger (zingiber officinaleroscoe.) that belongs to family zingiberaceae was analyzed. ginger rhizome oil was found to be effective against a range of bio-deteriogens. the minimum inhibitory concentration (mic) value was determined by poisoned food technique and volatile activity assay. the study demonstrates that essential oil had a wid...

results in total, 73 isolates were collected and diagnosed as s. pneumoniae. isolates were susceptible to ofloxacin 95.9%, vancomycin 93%, penicillin 78%, trimethoprim-sulfamethoxazole 61.6%, ceftriaxone 53.5%, meropenem 52%, cefotaxime 46.5%, and erythromycin 8.2%. of the 15 prsp isolates, the pbp2b gene was identified in 12 (80%). in 1 penicillin-intermediate s. pneumoniae isolate the pbp2b w...

abstract       background and objective: enterococci are relatively nonvirulent bacteria that rarely cause disease. antimicrobial treatment of enterococci is often challenging due to their antibiotic resistance. this study aimed to investigate the antibacterial activity of aqueous extract of garlic against enterococcal isolates.     methods: in this descriptive study, 120 enterococcus isolates ...

nowadays, many antibiotics are being used to control infectious diseases. inappropriate use of antibiotics leads to emergence of resistant bacteria and problems such as a prolonged course of treatment. medicinal plants and their derivatives, as a good source of treatment, are effective against drug resistance. in this study we have evaluated the antimicrobial activity of herbal essential oils o...