white spot lesions are observed in nearly 50% of patients undergoing orthodontic treatment. long-lasting antibacterial properties of orthodontic cements can reduce this phenomenon. the aim of this research was to compare antimicrobial activity of three commercial glass ionomer cements with three commercial zinc phosphate cements, over time, against streptococcus mutans and candida albicans. dir...

The fate of bacteria in human urine was studied after inoculation of small numbers of Escherichia coli and other bacterial strains commonly implicated in urinary tract infection. Urine from normal individuals was often inhibitory and sometimes bactericidal for growth of these organisms. Antibacterial activity of urine was not related to lack of nutrient material as addition of broth did not dec...

background: innovative bioactive films incorporated with antimicrobial agents have been recently developed for food preservation. the aim of this study was to evaluate antibacterial activity of polylactic acid (pla) films incorporated with ziziphora clinopodioides essential oil (zeo) and ethanolic propolis extract (epe) against some common food-borne pathogens. methods: the volatile chemical co...

polymer nanocomposites containing metals have been used in a wide range of applications due to their versatility, and tunable characteristics including physical, chemical, biological and mechanical properties. in this research work polystyrene-silver nanocomposite has been produced using polymerization of a w/o microemulsion system. styrene monomer was used as the oil or continues phase of the ...

brazilian peppertree (schinus terebinthifolius) leaf extract was applied against two strains of the crown gall disease agent (agrobacterium tumefaciens); strains c58 and ar125. in vitro, we used the agar well diffusion method and the extract was tested in different solvents selected according to their polarity indices, at different concentrations and different incubation temperatures. in vivo, ...

introduction: thymbra spicata (t. spicata) is a conventional medicinal herb which is commonly used in the folklore medicine system of iran. aim of the study was to assess the antibacterial activity of the essential oil and hudroalcholic extract of the plant t. spicata on some important bacteria. materials & methods: the essential oil and extract of t. spicata were obtained by hydrodistillation ...

background and objectives: ferula assa-foetida (asafoetida) is a native iranian species which grows in different regions and climates in iran. the plant is well known in iranian traditional medicine as well as folk medicine for treatment of diseases. several studies have been carried out on the essential oil of this species collected from different areas of iran. this study is the first report ...

as part of our ongoing interest in exploring the synthesis of antibacterial agent, we report an efficient, mild, one pot and chemoselective procedure for preparation of 3-poly (vinylbenzyl)-5,5-dimethylimidazolidine-2,4-dione as a antimicrobial agent from poly(vinylbenzyl chloride) and 5,5-dimethylhydantoin in the presence of a base in dmf as a solven. the ft-ir technique and melting point conf...

background & aim: the present study was aimed to evaluate and compare the antibacterial activity of schrophularia striata boiss. andstachys schtschegleevii sosn. extracts against seven clinical isolates. the test isolates were streptococcus agalactiae, enterococcus faecalis, staphylococcus saprophyticus, e. coli, klebsiella pneumoniae, proteus mirabilis and enterobacter dissolvens. e. coli (atc...