objective: nigella sativa (n. sativa) seeds were used in traditional medicine for the treatment of a variety of diseases. the seed extracts and oil of this plant have shown various pharmacological properties including antimicrobial actions. in this study, the in vitro and in vivo antibacterial effects of methanol extract of the seeds against pathogenic bacteria causing mastitis in cows have bee...

the development of the eco friendly procedures makes nanoparticles as the rapidly growing field of nanotechnology. amongst, the silver nanoparticles have become prominent in the field of medicine to their peculiar antimicrobial properties. in the present study we suggest an eco friendly procedure of extracellular synthesis of silver nanoparticles with an average sizes of 5-50nm using an actinom...

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...

conclusions the results of our study showed that plant extracts have good antibacterial properties against pseudomonas aeruginosa and escherichia coli. objectives this research aims to discover the function of some medicine plants on pestiferous pseudomonas aeruginosa and escherichia coli in humans. materials and methods bacterial strains were obtained from a standard laboratory. the strains of...

vibrio cholerae is a human pathogen that causes mild to severe diarrheal illnesses and has major public health significance. the aim of this study was to investigate the effects of antimicrobial activity of the gold nanoparticles on vibrio cholera. gold and silver nanoparticles are chemically synthesized. standard strain of vibrio cholerawas cultured in a nutrient broth. minimum inhibitory conc...

background & aim:  the aim of this study was to assess the bactericidal effect of three medicinal plant species, including thymus vulgaris, trachyspermum ammi, and mentha aquatica on erwinia carotovora growth. experimental: this research was done in a factorial to completely randomized design with three concentrations, and three replicates on nutrient agar culture medium. results &discu...

in the present study, a simple, fast and eco-friendly biosynthesis of silver nanoparticles (agnps) using   mentha langifolia leaf extract as the reducing agent was investigated. nanoparticles forming were indicated by the color changes in solution and were confirmed by uv-vis spectrum, ft-ir analysis and scanning electron microscopic (sem) micrograph. the average particle size of produced agnps...

Tea leaves are known for its antibacterial activity against many microorganisms. In this study we attempted to describe the synergistic antimicrobial activity of tea and antibiotics against enteropathogens. Antimicrobial activity of boiled water tea extract and organic solvent extract were studied against Salmonella typhimurium 1402/84, S. typhi, S. typhi Ty2a, Shigella dysenteriae, Yersinia en...