Zobrazeno 1 - 10
of 75
pro vyhledávání: '"T. J. Humphrey"'
Publikováno v:
British poultry science. 59(6)
1. Chicken-associated
Autor:
T. J. Humphrey, Gordon S. A. B. Stewart, Steve Leach, Angela C Davies, Frieda Jørgensen, Stephen J. Wilde
Publikováno v:
Microbiology. 146:3227-3235
The heat and acid resistance and the ability to survive airdrying on commonly used kitchen surfaces were assessed for clinical and environmental strains of Salmonella enterica subsp. enterica serovar Typhimurium, definitive type (DT) 104. Three out o
Publikováno v:
Journal of Applied Microbiology. 86:325-330
Escherichia coli became more acid tolerant following incubation for 60 min in a medium containing L-glutamate at pH 7.0, 7.5 or 8.5. Several agents, including cAMP, NaCl, sucrose, SDS and DOC, prevented tolerance appearing if present with L-glutamate
Publikováno v:
Epidemiology and Infection. 113:403-409
SUMMARYSalmonella enteritidis PT4 was recovered from fingers following the breaking of intact shell eggs artificially contaminated in the contents with the bacterium. Kitchen utensils used to mix egg dishes were salmonella-positive, sometimes after w
Autor:
T. J. Humphrey
Publikováno v:
International Journal of Food Microbiology. 21:31-40
Salmonella enteritidis can contaminate the contents of clean, intact shell eggs as a result of infections of the reproductive tissue of laying hens. The principal site of infection would appear to be the upper oviduct. In egg contents the most import
Publikováno v:
Journal of applied microbiology. 111(1)
Salmonella enterica serovar Typhimurium is capable of adopting a filamentous phenotype in response to damage. How this adaptive response affects bacterial virulence is unclear. We have examined the hypothesis that filamentation affects the ability of
Publikováno v:
Letters in Applied Microbiology. 17:272-275
Acid sensitivity induction (ASI) at alkaline pH in Escherichia coli 1157 (phoE) is only fully mounted if protein synthesis occurs for the first 5 min of the 12–15 min induction period, but appreciable sensitization occurs in the presence of chloram
Autor:
T. J. Humphrey, A. Whitehead
Publikováno v:
Epidemiology and Infection. 111:209-220
SummaryThe growth ofSalmonella enteritidisPT4 in albumen around an intact yolk was governed by the age of the egg on inoculation. In the majority of eggs, held at 20° C, the bacterium was unable to grow rapidly until eggs had been stored for approxi
Autor:
K. Martin, T. J. Humphrey
Publikováno v:
Epidemiology and Infection. 111:325-335
SummaryA study was undertaken to examine the feasibility of using naturally-occurring bacteriophages to assess the impact of re-laying on levels of viral contamination inCrassostrea gigas, the Pacific oyster. Two phages were chosen. One, male-specifi
Publikováno v:
Epidemiology and Infection. 110:601-607
SUMMARYBetween June 1990 and July 1991, broiler chickens from 49 flocks from 23 farms were examined for the carriage ofCampylobacter jejuniat slaughter. Thirty-seven flocks (76%) were campylobacter-positive. Prevalence of campylobacter-colon-ization