screening of microorganisms for the production of novel antibiotics has been intensivelypursued for many years by scientists. actinomycetes have the capability to synthesize manydifferent antibiotics. a total of 69 actinomycete isolates were recovered from soil samplescollected from alborz province. selected colonies (rough, chalky) of actinomycetes werepurified. all screened isolates were iden...

background and objective: considering the increasing tendency of public towards green consumption and the dangers of artificial additives, this study aimed to assess antibacterial activity of essential oils of cinnamomum zeylanicum, mentha piperita l., zataria multiflora boiss and thymus vulgaris against three important pathogenic and spoilage bacteria (pseudomonas fluorescens, erwinia carotovo...

gingivitis is an inflammatory destructive disease mainly caused by microbial plaques. gram-positive and gram-negative bacilli or cocci have been isolated from dental plaque and gingivitis. this study was going to isolate and characterize the pathogenic bacteria from gingival of 100 patients with oral gingivitis. enriched and specific media used for isolation of bacteria. identification of isola...

background and aim: for rapid growing drug resistance among pathogenic microorganisms, it is essential to find new compounds with antimicrobial activity. medicinal herbs application in traditional treatment for thousand years, make this natural compound to the best choice for antimicrobial studies. the aim of this study is to determine the antimicrobial activity of artemisia against some import...

the antibacterial and antioxidant activities of methanol and acetone extracts of three marine algae, including hypnea hamulosa, gracilaria corticata and enteromorpha intestinalis wereinvestigated.antioxidant activities were determined by means of total antioxidant capacity, total phenolic compounds, dpph radical scavenging activity and ferric reducing antioxidant power. antibacterial activity w...

background :    due to excessive consumption of synthetic drugs, drug resistance rate of pathogenic bacteria is increasing and there is an ever-increasing need to find new safe compounds to tackle this problem. this study was conducted to investigate the consequences of chavill extract on the growth and viability of gastrointestinal pathogenic bacterium and probiotics bacteria.   methods :    t...

waterborne outbreaks of pathogenic bacteria from contaminated water are serious threats forpublic health. coliform bacteria have been regarded as one of the most important indicators for monitoringpathogenic bacteria. to address potential pathogenic bacterial outbreaks, the distribution and diversity ofcoliform bacteria in jiahe river, which flows through densely-populated urban area in china, ...

background considering the high prevalence of bacterial vaginosis and its association with urinary tract infection in women and treatment of gynecologic problems occur when a high recurrence of bacterial vaginosis is often treated with antibiotics. objectives the purpose of this study was to investigate the inhibitory effect of lactobacillus reuteri on pathogenic bacteria isolated from women wi...