scholarly journals Assessment of fate of Argentinean Salmonella serotypes studied under different conditions of growing factors

2015 ◽  
pp. 1-16
Author(s):  
Susana María Jimenez ◽  
Rita Archelasqui ◽  
María Sara Salsi ◽  
María del Carmen Tiburzi ◽  
María Alejandra Moguilevsky ◽  
...  
Keyword(s):  
Salmonella Serotypes

The Effectiveness of Methanolic Extracts of Five Plants on Different Salmonella Isolates

2020 ◽  
Keyword(s):  
Multidrug Resistance ◽  
Salmonella Enteritidis ◽  
Microbial Growth ◽  
Herbal Extracts ◽  
Antibacterial Compounds ◽  
Natural Substances ◽  
Methanolic Extracts ◽  
Bacterial Antibiotic Resistance ◽  
Salmonella Serotypes ◽  
Multiple Challenges

Salmonellosis is known to be one of important issues that affect poultry industry as well as it can affect human health. Recently, multiple challenges are facing the use of natural antibacterial compounds, such as herbal extracts to overcome the massive increase in bacterial antibiotic resistance. Different Salmonella serotypes were recovered throughout examination of diarrheic poultry. These strains showed multidrug resistance by disc diffusion methods also, the resistance genes qnrS and aac (6′)-Ib-cr were detected in S. Enteritidis and S.Typhimurium which isolated from broiler's organs and muscles. The methanolic extracts of five plants (Alhagi maurorum, Conyza dioscoridis, Coriander sativum, Caracuma longa and Cuminum cyminum) were tested for their antibacterial activity against different isolated Salmonella serotypes using minimum inhibitory concentrations (MIC). Conyza dioscoridis was the most effective extract retarding microbial growth of Salmonella Enteritidis, while other plant extracts showed variable antimicrobial activity. These results are promising in the way of replacing the antibiotic therapy with natural substances to overcome the multidrug resistance.

Synthesis of three Salmonella epitopes for biosensor studies of carbohydrate–antibody interactions

2002 ◽  
Vol 80 (8) ◽  
pp. 1131-1140 ◽  
Author(s):  
Henry N Yu ◽  
Chang-Chun Ling ◽  
David R Bundle
Keyword(s):  
Key Words ◽  
Self Assembled Monolayers ◽  
Antigenic Determinants ◽  
Amino Group ◽  
Assembled Monolayers ◽  
Construction Of Self ◽  
Terminal Amino ◽  
Salmonella Serotypes ◽  
O Antigens ◽  
Antibody Interactions

Disaccharides 1-3 corresponding to the antigenic determinants of Salmonella serotypes A, B, and D1 were synthesized in a form suited for use in biosensors. The disaccharide determinants each contain a unique 3,6-dideoxyhexose, namely abequose (3,6-dideoxy-D-xylo-hexose), paratose (3,6-dideoxy-D-ribohexose), and tyvelose (3,6-dideoxy-D-arabino-hexose), are α-linked to the 3-position of D-mannopyranose. The disaccharides were further derivatized with a linear aglycon that has a terminal amino group, and can be readily coupled to pertinent chains carrying a terminal thiol for the construction of self-assembled monolayers (SAMs). Efficient routes that employed a single 3,6-dideoxygenation step were developed for the synthesis of paratoside 15 and tyveloside 22.Key words: Salmonella O-antigens, lipopolysaccharide, abequose, paratose, tyvelose, 3,6-dideoxyhexose, deoxygenation, glycoside tethers, immobilization via pentenyl glycosides.

scholarly journals Salmonellas in sewage. A study in latent human infection

1969 ◽  
Vol 67 (3) ◽  
pp. 517-523 ◽  
Author(s):  
R. W. S. Harvey ◽  
T. H. Price ◽  
D. W. Foster ◽  
W. C. Griffiths
Keyword(s):  
Technical Assistance ◽  
Human Infection ◽  
Reference Laboratory ◽  
Salmonella Infection ◽  
Technical Success ◽  
Sewerage System ◽  
The Public ◽  
Multiple Sampling ◽  
Paratyphi B ◽  
Salmonella Serotypes

SUMMARYIn a residential estate of 4000 persons, containing neither industry nor retail butchers shops, salmonellas were regularly found in the sewerage system. They were frequently found in the sewage of a portion of the estate housing 1000 persons. The range of serotypes found was wide and some types suggested an exotic origin. No overt salmonella infection in the estate was reported during the period of survey, although local general practitioners had been previously alerted. Overt infection due to serotypes found in the survey were, however, reported in other areas of Glamorgan. Multiple sampling points in the sewerage system and a serological technique for examining samples contaminated with multiple salmonella serotypes were essential for the technical success of the survey.We should like to thank Prof. Scott Thomson for his advice in the preparation of this paper; Dr E. S. Anderson of the Central Enteric Reference Laboratory and Bureau, Colindale, for phage-typing the strains of S. typhimurium and S. paratyphi B; and Dr G. J. G. King of the Public Health Laboratory, Bournemouth, for identifying the serotypes isolated. We should also like to thank Mr T. R. Liddington and Mr J. H. Price for their technical assistance.

scholarly journals Vaccination and early protection against non-host-specific Salmonella serotypes in poultry: exploitation of innate immunity and microbial activity

2005 ◽  
Vol 133 (06) ◽  
pp. 959 ◽  
Author(s):  
F. VAN IMMERSEEL ◽  
U. METHNER ◽  
I. RYCHLIK ◽  
B. NAGY ◽  
P. VELGE ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Microbial Activity ◽  
Salmonella Serotypes

Modeling the Growth of Salmonella in Cut Red Round Tomatoes as a Function of Temperature

2010 ◽  
Vol 73 (8) ◽  
pp. 1502-1505 ◽  
Author(s):  
WENJING PAN ◽  
DONALD W. SCHAFFNER
Keyword(s):  
Mathematical Model ◽  
Growth Rates ◽  
Low Temperatures ◽  
Safety Concern ◽  
Time Intervals ◽  
Salmonella Serotypes ◽  
Increasing Temperature ◽  
Incubation Temperatures ◽  
Raw Poultry ◽  
The Relationship

Tomato-associated Salmonella outbreaks have recently become a significant food safety concern. Temperature abuse of cut tomatoes may have played a role in some of these outbreaks. The purpose of this study was to develop a mathematical model to describe the growth of Salmonella on cut tomatoes at various temperatures. Four Salmonella serotypes (Typhimurium, Newport, Javiana, and Braenderup) obtained from previous tomato-linked cases of salmonellosis were used in this study. These four serotypes were cultured separately, combined into a cocktail, and inoculated onto whole red round tomatoes and allowed to dry overnight. The tomatoes were then cut into pieces and incubated at a predetermined range of temperatures (10, 12.5, 15, 17.5, 20, 22.5, 25, 27.5, 30, and 35°C). Salmonella concentration was measured at specified time intervals to determine the growth curve for Salmonella on cut tomatoes at each temperature. The growth rates were calculated using DMFit and used to build a mathematical model to illustrate the relationship between the growth rates of Salmonella on tomatoes and incubation temperatures from 10 to 35°C. The resulting model compared favorably with a Salmonella growth model for raw poultry developed by our laboratory. The Pathogen Modeling Program underpredicted growth at low temperatures and overpredicted growth at high temperatures. ComBase predicted consistently slower growth rates than were observed in tomatoes but showed parallel increases in growth rate with increasing temperature.

scholarly journals Animal salmonella surveillance in Peninsular Malaysia, 1981–1985

1988 ◽  
Vol 100 (3) ◽  
pp. 351-359 ◽  
Author(s):  
P. G. Joseph ◽  
S. P. Sivanandan ◽  
Ham Thong Yee
Keyword(s):  
Peninsular Malaysia ◽  
Surveillance Period ◽  
Animal Products ◽  
Salmonella Dublin ◽  
Salmonella Serotypes ◽  
Food Animals

SummaryDuring the 5-year (1981–5) surveillance period, 2322 salmonella isolations were recorded from animals and other non-human sources in Peninsular Malaysia. This was an increase of 356% over the preceding 5-year period. The 83 serotypes isolated were recovered from 41 sources. Of these 34 were new serotypes bringing the total number of serotypes isolated from non-human sources to date up 97. Food animals and edible animal products accounted for 92·2% of the total isolations, with cattle and beef accounting for 70% of the total. Salmonella dublin was the most frequently isolated serotype, whereas S. typhimurium had the widest zoological distribution. More than 80% of the non-human salmonella serotypes have also been reported in man in this country.

scholarly journals Recovery of Salmonella serotypes from swine faecal samples using ISO 6579

1999 ◽  
Author(s):  
R. L. van Winsen ◽  
M. Swanenburg ◽  
J. M.A. Snijders ◽  
H. A. P. Urlings
Keyword(s):  
Faecal Samples ◽  
Salmonella Serotypes

Production of tetrathionate reductase by Salmonella

1969 ◽  
Vol 15 (2) ◽  
pp. 238-240 ◽  
Author(s):  
J. Papavassiliou ◽  
Vasso Samaraki-Lyberopoulou ◽  
G. Piperakis
Keyword(s):  
Escherichia Coli ◽  
Paratyphi B ◽  
Salmonella Serotypes

From 195 strains of Salmonella, 175 (89.8%) produced tetrathionate reductase (TTR). TTR-negative Salmonella were found in 7 out of 31 serotypes examined: S. paratyphi A, S. paratyphi B, S. typhimurium, S. paratyphi C, S. thompson, S. typhi, and S. enteritidis. TTR-negative S. paratyphi B and S. thompson have not previously been reported. Production of TTR is valuable for the subdivision of some Salmonella serotypes into TTR-positive and TTR-negative variants.Examination of 362 strains of Enterobacteriaceae for TTR confirmed that Escherichia coli, Shigella, Klebsiella, and Aerobacter cloacae (enterobacter) are TTR-negative, while Salmonella, Citrobacter, and Proteus are usually TTR-positive.

Sign in / Sign up

Export Citation Format

Share Document