Bacteriocin Typing
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. Molecular identification of Lactobacillus spp. associated with puba, a Brazilian fermented cassava food
Puba or carimã is a Brazilian staple food obtained by spontaneous submerged fermentation of cassava roots. A total of 116 lactobacilli and three cocci isolates from 20 commercial puba samples were recovered on de Man, Rogosa and Sharpe agar (MRS); they were characterized for their antagonistic activity against foodborne pathogens and identified taxonomicall
Braz. J. Microbiol.. Publicado em: 19/03/2013
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2. Caracterização fenotípica de Cepas de Staphylococcus aureus isoladas de queijos ricota
Este estudo teve como objetivo isolar cepas de Staphylococcus aureus de queijos ricota e caracterizá-las com relação a marcadores fenotípicos de atividade lipolítica, bacteriocinotipagem e resistotipagem. Para o isolamento, foram adquiridas 11 amostras de queijo ricota de diferentes marcas comercializadas em supermercados da cidade de João Pessoa-PB. E
Publicado em: 2011
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3. Analise genotipica e mutacinotipagem de Streptococcus mutans isolados de voluntarios carie-ativos e livres de carie
The objectives of this study were: to compare the activity of mutacin production, the fenotypic/genotypic diversity of S. mutans isolated from caries active and caries free individuals, and to evaluate the association index and the power discriminatory of Mutacin Typing and AP-PCR. In the present study, 319 strains of S. mutans isolated from saliva, dental p
Publicado em: 2003
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4. Typing of Proteus mirabilis by Bacteriocin Production and Sensitivity as a Possible Epidemiological Marker
Two bacteriocin typing methods, based on bacteriocin production and bacteriocin sensitivity, were developed to aid in the separation of strains of Proteus mirabilis. One hundred sixty-two isolates of P. mirabilis and 10 Cradock-Watson bacteriocin producers were grown inproteose peptone no. 3 broth and induced with mitomycin C under culture conditions found o
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5. Bacteriocin typing of streptococcal isolates from endocarditis.
A typing system based on bacteriocin production and sensitivity for Streptococcus sanguis strains was devised. Bacteriocin producer strains were grown (37degrees C) anaerobically on brain heart infusion-yeast extract agar for 18 h. Bacteriocin indicator strains were suspended to molten brain heart infusion-yeast extract agar and then overlayed onto the produ
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6. Development and application of a multiple typing system for Clostridium difficile.
A combination of bacteriocin, bacteriophage, and plasmid typing techniques was used to differentiate strains of Clostridium difficile. A typing set of 20 bacteriocin-producing strains was established after 400 isolates of C. difficile were screened for the ability to produce bacteriocin. These strains were used to type a collection of 114 isolates of C. diff
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7. Evaluation and application of an improved bacteriocin typing method for Klebsiella aerogenes.
A bacteriocin typing method was evaluated using 200 strains of Klebsiella aerogenes, 93% of which fell into 11 distinct types. The typing technique was successfully applied to the monitoring and control of hospital cross-infection.
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8. Typing of Pseudomonas cepacia by bacteriocin susceptibility and production.
The significance of Pseudomonas cepacia as an opportunistic pathogen in immunocompromised patients has become increasingly recognized. Particularly disturbing is its increased incidence, reported by several North American centers, in respiratory tract cultures from patients with cystic fibrosis. Epidemiological studies of P. cepacia have been hampered by a l
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9. Single bacteriocin typing scheme for the vibrio group of organisms.
A total of 743 strains of O-I "agglutinable" and 293 strains of O I "inagglutinable" Vibrio cholerae were subjected to bacteriocin typing based on deferred antagonism of eight indicator bacteria, including two strains of V. cholerae, by the method of Chakrabarty et al. (Infect. Immun. 1:293-299, 1970). A minor modification that was effected in the typing med
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10. Continued Surveillance of Serratia marcescens Infections by Bacteriocin Typing: Investigation of Two Outbreaks of Cross-Infection in an Intensive Care Unit
During an 8.5-month period, 198 additional isolates of Serratia marcescens were typed by bacteriocin sensitivity; 154 isolates were typable and were categorized according to our current system of 54 provisional bacteriocin sensitivity patterns. Two outbreaks of nosocomial infection due to S. marcescens occurred in our intensive care unit, involving two and f
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11. Bacteriocin typing of clinical isolates of Enterobacter cloacae.
A total of 16 selected bacteriocins of Enterobacter cloacae were characterized presumptively. They proved to be noninfectious, sedimentable (105,000 X g), resistant against chloroform and trypsin, and nonfilterable. The host ranges were essentially species specific. Based on susceptibility to one or more of these 16 bacteriocins, 242 of 308 (78.6%) clinical
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12. Bacteriocin typing by leakage of ultraviolet light-absorbing material.
A rapid and reproducible method of bacteriocin typing is described based on leakage of ultraviolet light-absorbing material (UVAM), detectable in supernatants of bacteriocin-sensitive cultures, by means of a spectrophotometer. The prerequisites for reproducible results, with nonsignificant fluctuations in standard error of the mean, are: a set of standardize