نتایج جستجو برای: ent. faecalis (1)

تعداد نتایج: 2763057  

Journal: :Journal of environmental quality 2002
Andrea L Wheeler Peter G Hartel Dominique G Godfrey Jennifer L Hill William I Segars

Regulatory agencies are interested in a fecal indicator bacterium with a host range limited to humans because human fecal contamination represents the greatest hazard to humans, yet is a relatively easy nonpoint source to remedy. Watersheds with human fecal contamination could be given first priority for cleanup. A fecal indicator bacterium with a host range limited to humans and a few other wa...

Journal: :Letters in applied microbiology 2011
R Vidana A Sullivan H Billström M Ahlquist B Lund

AIMS Enterococcus faecalis is associated with a significant number of refractory endodontic infections. Previous studies report a prevalence of Ent. faecalis ranging from 24% up to 77% in teeth with failed endodontic treatment. The origin of the micro-organism remains unclear, as enterococci do not belong to the normal oral microflora. The aim of this study was to determine whether these entero...

Ahmad Reza Yari, Ghader Ghanizadeh,

Background & Aims of the Study: The safe drinking water providing is one of the most crucial objections in these centenaries. Bacterial water contamination and high rate of morbidity and mortality is crucial health threat. Efficiency of potassium persulfat (KPS) associated solar disinfection as a novel water disinfection technology was evaluated in batch scale experiments, us...

Journal: :علوم و صنایع غذایی ایران 0
فریده طباطبایی یزدی دانشیار و عضو هئیت علمی گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه فردوسی مشهد علیرضا وسیعی دانشجوی دکتری علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه فردوسی مشهد بهروز علیزاده بهبهانی دانشجوی دکتری علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه فردوسی مشهد سید علی مرتضوی استاد و عضو هئیت علمی گروه علوم و صنایع غذایی، دانشکده کشاورزی، دانشگاه فردوسی مشهد فروزان طباطبایی یزدی عضو گروه علوم دامی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

the aim of this work was identified lactic floraas a traditional fermented food and then evaluates antimicrobial activities of some strains. a total of 140 gram-positive and catalase-negative isolates were subjected to grouping by physiological and biochemical tests and carbohydrates fermentation. based on the resultsthese 140 isolateswere dividedinto 9 groups. two or three isolated were select...

Journal: :Journal of medical microbiology 1995
I Morrissey J T Smith

The bactericidal activity of two new 4-quinolones, DU-6859a and DV-7751a, was investigated against strains of Escherichia coli, Staphylococcus aureus, S. epidermidis, Streptococcus pneumoniae and Enterococcus faecalis. DU-6859a and DV-7751a were more bactericidal than any 4-quinolone tested previously. Furthermore, DU-6859a was unique among 4-quinolones in being able to kill Ent. faecalis after...

2007
Yucheng Feng Peter G. Hartel Jared A. Fisher Karen Rodgers Bin Liu Kerry J. Ritter

For bacterial source tracking (BST), the percentage of Enterococcus faecalis isolates among all fecal enterococci in an environmental water sample may serve as an inexpensive indicator of human and bird fecal contamination. Research suggests that some subspecies of fecal indicator bacteria are better adapted than others to survive environmental conditions. We determined the survival of seven di...

Journal: :Poultry science 2002
J D Tankson J P Thaxton Y Vizzier-Thaxton

Recent studies have proven that Enterococcus faecalis (1.5 x 10(7) live bacteria from a tryptic broth culture given s.c. or intra-abdominally (IA) to 5-wk-old broilers) caused pulmonary hypertension syndrome (PHS) in 97% of the birds within 48 h. Definitive diagnosis of PHS was made at necropsy by observing a cavity on the surface of the right ventricular wall and by increased ratio of left ven...

2012
K. Saelim N. Sohsomboon S. Kaewsuwan S. Maneerat

A bacteriocin-like substance (BLS) producing Enterococcus faecium CE5-1 was isolated from the gastrointestinal tract (GIT) of Thai indigenous chickens. Investigations of its probiotic potential were carried out. The competition between the BLS probiotic strain and antibiotic-resistant enterococci was also studied. Ent. faecium CE5-1 exhibited a good tolerance to pH 3.0 after 2 h and in 7% fresh...

Journal: :Letters in applied microbiology 1997
R H Reed

Suspensions of the faecal indicator bacteria Escherichia coli and Enterococcus faecalis were incubated in full sunlight in plastic bottles containing either (i) air-equilibrated (oxygenated) water or (ii) anaerobic (deoxygenated) water. A rapid decrease in cfu ml-1 was observed for actively growing and stationary phase cells of both types of faecal bacteria when illuminated under aerobic condit...

Journal: :Journal of water and health 2007
Peter G Hartel Samuel P Myoda Kerry J Ritter Robin L Kuntz Karen Rodgers James A Entry Sheryl A Ver Wey Eduardo C Schröder Juan Calle Mercedes Lacourt Janice E Thies John P Reilly Jeffry J Fuhrmann

The limited host range of Enterococcus faecalis may reduce its clonal diversity and thereby increase its geographic sharing of ribotype patterns. Such sharing would be advantageous for bacterial source tracking (BST). We determined the geographic sharing of ribotype patterns in 752 Ent. faecalis isolates obtained primarily from wastewater treatment plants in Delaware (15 locations; 490 isolates...

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