background: balantidium coli infects humans, primates and pigs, causing serious diarrhea and dysentery. little information on the prevalence of b. coli in primates is available in china. this investigation was conducted to determine the prevalence of b. coli infection in bred rhesus monkeys in guangxi zhuang nationality autono-mous region (gznar), southern china. methods: a total of 120 fecal s...

a variety of probiotic bacteria have been tested to control animal and foodborne pathogenic bacteria in livestock. the mechanism of inhibition of pathogenic bacteria for several of those probiotic microorganisms is mediated by the production of bacteriocins. colicins are probably the group of bacteriocins that have been most thoroughly characterized. colicins are antimicrobial proteins produced...

background: there is a growing concern on the impact of the presence of extended-spectrum β-lactamase (esbl) producing escherichia coli isolated from animals on public health. objectives: the aim of this study was to investigate the presence of three classes of esbl genes in e. coli isolates from sheep and broilers at a slaughter in urmia region, iran. methods: a total of 111 e. coli isolates w...

CoQ10 and lycopene are isoprenoid compounds with nutraceutical and pharmaceutical benefits. In this study, the effect of concomitant lycopene biosynthesis on CoQ10 accumulation in transformed Escherichia coli DH5α was studied. A lycopene production pathway including geranylgeranyl diphosphate synthase (crtE), phytoene synthase (crtB), and phytoene desaturase (crtI) from Erwinia herbicola was co...

conclusions ctx-m was the most prevalent esbl genotype in uropathogenic e. coli (upec) isolated from uti. in addition, a high frequency of qnr genes among esbl-producing e. coli was identified in this study. in order to avoid treatment failures, we recommend using phenotypic and molecular methods to diagnose these enzymes and qnr genes. results the highest sensitivity was seen to imipenem (96.7...

conclusions the impact of sugars and other factors on biofilm formation can vary depending on the type of bacteria present. results results showed that the presence of sugars has no effect on the bacterial growth rate; all three concentrations of sugars were hydrophilic and demonstrated a high affinity toward binding to the surfaces. background bacteria utilize various methods in order to live ...

conclusions our present study shows that sugar beet molasses is a source of plp and l-ser; and hence, suggests the general application of the approach to produce l-trp more economically. results consequently, the potassium phosphate buffer system was considered as the suitably buffered reaction medium. the concentration of l-trp produced in reaction medium was 0.3 mm and 0.12 mm for glucose and...

conclusions reteplase was expressed in e. coli top 10 after activation of pbad/giiia promoter region by arabinose and optimized. results the obtained recombinant plasmid was sequenced to confirm the presence and correct framing of reteplase gene regarding the expression of reteplase. maximum production of this enzyme was obtained under the following condition: 0.0002% l-arabinose at 37°c for 2 ...

background development of antibiotic resistance among pathogenic bacteria motivates the researchers to search for newer antimicrobial agents. objectives in the present study, antibacterial effects of cuminum cyminum linn. essential oil against multidrug resistant (mdr) escherichia coli strains isolated from urinary tract infections were studied, using microdilution method. materials and methods...

background trachyspermum ammi or carum copticum, commonly known as ajowan or ajwain is a plant used as a spice. thymol, the major phenolic compound present in ajowan is known as a strong germicide and anti-spasmodic. it is also used for cleaning the wounds and treating skin infections. objectives here, we aimed to study the inhibitory effects of ajowan essential oil on microorganisms like esche...