نتایج جستجو برای: pathogenic effects
تعداد نتایج: 1603347 فیلتر نتایج به سال:
water and soil pollution by human pathogenic bacteria draw attention of many researchers. duration of bacterial survival for reach to the soil and water resources is very important. current study focused on the effects of caco3 and caso4 compounds on escherichia coli survival. using caco3, caso4 compounds and fine sand particles (
Background: Microbial biofilms are responsible for many human infections and increase of antibiotic resistant bacteria. Therefore, finding an efficient way to prevent infection and biofilm formation of bacteria is essential. Medicinal plants are among suitable candidates to inhibit biofilm formation of bacteria. The aim of this study was to evaluate the antimicrobial effects of...
Background and Objective: According to definition of probiotics by WHO/FAO that is “Live microorganisms which, when present in sufficient amount, confer beneficial effects to the host”. Saccharomyces cerevisiae is the first non-pathogenic yeast which is known as a probiotic for humans that its helpful effects for humankind has been proved. Pseudomonas aeruginosa is one of the most ...
Background and Objectives: Lactobacillus spp. are widely distributed in environment as well as dairy products. During the fermentation process, these microorganisms produce various compounds such as organic acids and bacteriocins with antimicrobial activities. The aims of this study were to isolate and identify lactobacilli from local yogurts of Behbahan, Iran, and assessment of antimicrobial a...
Human-pathogenic Vibrio bacteria are common inhabitants of oyster tissues, but our understanding factors driving the wide range concentrations found in individual oysters is extremely limited. We examined influence sex and parasitism light their profound effects on tissues against a backdrop eastern oysters, Crassostrea virginica, from two diploid triploid aquacultured lines. This allowed us to...
Abstract Background and objective: The effects of lactobacillus Species and their metabolites on dairy products were proved as probiotics on pathogenic bacteria. The aim of this study was to isolate the lactobacillus from dairy product (Yogurt, cheese, milk and whey …) and to determine the antimicrobial activity against some pathogenic bacteria (Salmonella typhimurium, E.coli, Helicobacter pyl...
this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...
nowadays, uncontrolled and frequent use of antibiotics may cause emergence of microbial resistanceamong pathogenic agents. therefore, the use of new synthetic and natural antimicrobial compounds isinevitable. one source of natural compounds in this respect comes from plants. the purpose of this study was to examine the antibacterial effects of peel extracts from sour and sweet pomegranate. meth...
results results showed desirable antimicrobial effects of the silver nanoparticles and plant extract on the formation of the pseudomonas aeruginosa biofilm and the highest effect was observed in silver nanoparticles and the lowest inhibitory effects were observed in bucks beard and prangos ferulaceae. conclusions medicinal plants used in the study decreased the rate of biofilm formation. since ...
lactic acid bacteria (lab) are gram positive and non- spore forming bacteria that can produce some special substances for growth inhibition of pathogenic, non-pathogenic and food spoilage bacteria. the aim of this study was to determine the inhibitory effects of lactobacillus acidophilus ptcc1643 (dsm 20079) and lactobacillus plantarum ptcc 1058 (atcc 8014) cultural supernatants against urinary...
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