objective: infections are increasing caused by antibiotic-resistant pseudomonas aeruginosa day by day. for this reason, many researchers have tried to find new compounds as alternative antibiotics. the purpose of this study was to evaluate the effect of yarrow extract, green tea and ajowan  on pseudomonas aeruginosa. methods: extraction  of achillea, green tea and ajowan was done with rotary. f...

background and objectives: with regard to the hazards of nitrite, application of natural preservatives in order to reduce the microbial load of meat and meat products is increasing. owing to their anti-bacterial properties, red barberry and the dried residue of red grape could be suitable replacers for nitrite. materials and methods: agar dilution method was employed in order to determine the m...

minimum inhibitory concentrations (mic) of some essential oils and citric acid were determined against two micro-organisms associated with spoilage of orange juice (saccharomyces cervisiae and leuconostoc mesenteroids) and against four unidentified microorganisms isolated from citrus surface and spoiled orange juice. mic for limonene were obtained less than 5% w/v aqueous against saccharomyces ...

Background and Aim: There are some rich sources of antifungals in medicinal herbs. They have general acceptance due to their low cost and insignificant side effects. The efficacy of Peganum harmala (P. harmala) extract against Candida species was investigated in this study.    Materials and Methods: In this in vitro study, we used the maceration technique to obtain P. harmala aqueous and al...

in this study, invitro evaluation of some iranian plants against staphylococcus aureus isolation of urinary tract infection by microtiterplate method. all 12 strains of staphylococcus aureus isolated from urine culture of hospitalized patients during the years 2012- 2013. minimum inhibitory concentration (mic) of plant extract and essential oilagainst bacteria were determined using micro diluti...

it seems that rapid destruction of gram negative bacteria by antibiotics contributes to the clinical deterioration of some patients with gram negative infections. antibiotics increase the concentration of lipopolysaccharide (lps) in blood and cerebrospinal fluids. released lps can activate blood cells to produce tumor necrosis factor-alpha (tnf-a) and other cytokines. tnf-a appears to be a majo...

the purpose of this study was to determine the prevalence of anti-microbial resistance in intubated patients in intensive care unit (icu) of bahonar hospital in kerman province, iran during the year 2008. tracheal samples were obtained from 111 intubated patients in the icu by broncoalveolar lavage method. amikacin, ceftazidim and imipenem were used to evaluate antibiotic susceptibility. for de...

The resazurin assay utilising microtitre-plate, described by Drummond and Waigh in 2000, has been modified to achieve more accuracy in the determination of the minimum inhibitory concentration (MIC) values of natural products, including crude extracts, chromatographic fractions or purified compounds against various bacterial strains. This modified resazurin method is simple, sensitive, rapid, r...