Corpus ID: 85571126

Effect of salt concentrations on the growth of heat-stressed and unstressed escherichia coli

@article{Abdulkarim2009EffectOS,
  title={Effect of salt concentrations on the growth of heat-stressed and unstressed escherichia coli},
  author={S. Abdulkarim and A. B. Fatimah and John G. Anderson},
  journal={Journal of Food Agriculture \& Environment},
  year={2009},
  volume={7},
  pages={51-54}
}
The effect sodium chloride (NaCl) and potassium chloride (KCl) concentration on the growth of Escherichia coli cells cultivated at 37 and 44°C was studied in an effort to understand the importance of the salts and glucose in medium to the growth of E. coli. A turbidimetric method was used to measure the growth of E. coli after a 24 hours incubation period. The turbidimetric method used gave a high correlation (R2 = 0.9606) with the traditional surface colony count method. Four sets of salt… Expand

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References

SHOWING 1-10 OF 16 REFERENCES
Salt extends the upper temperature limit for growth of food-poisoning bacteria.
Inclusion of NaCl into the growth medium raised the upper temperature limit of growth of the following organisms: Staphylococcus aureus (two strains), Salmonella senftenberg, S. typhimurium,Expand
Response of Campylobacter jejuni to sodium chloride
Studies were done to provide more comprehensive information on the response of Campylobacter jejuni and nalidixic acid-resistant, thermophilic Campylobacter (NARTC) to sodium chloride at 4, 25, andExpand
Development of thermal inactivation models for Salmonella enteritidis and Escherichia coli O157:H7 with temperature, pH and NaCl as controlling factors.
TLDR
The thermal inactivation of Salmonella enteritidis phage type 4 and Escherichia coli O157:H7 as affected by temperature, pH and NaCl concentration and the D-value models were incorporated into Version 1, and subsequent versions, of the predictive microbiology software program, Food MicroModel. Expand
A vitalistic model to describe the thermal inactivation ofListeria monocytogenes
SummaryThermal inactivation of microorganisms has traditionally been described as log-linear in nature, that is the reduction in log numbers of survivors decreases in a linear manner with time. ThisExpand
Production and viability of coccoid forms of Campylobacter jejuni.
Studies were conducted into the formation and physiological state of coccoid cells of a strain of the human and animal pathogen Campylobacter jejuni. It was found that growth phase and the presenceExpand
Water Relations of Foodborne Bacterial Pathogens - An Updated Review.
  • J. Troller
  • Biology, Medicine
  • Journal of food protection
  • 1986
TLDR
A sizeable body of literature and knowledge of aw and its effects on microorganisms has emerged and one can only predict even greater advancements during the next decade. Expand
Survey of thermotolerant Campylobacter spp. and Yersinia spp. in three surface water sources in Norway.
TLDR
Logistic regression analysis showed a highly significant relationship between the prevalence of Campylobacter and the number of three types of indicator bacteria: faecal coliforms, faecic streptococci and sulphite-reducing clostridia and non-pathogenic variants. Expand
Interaction of Factors to Control Microbial Spoilage of Refrigerated Foods 1.
  • V. Scott
  • Chemistry, Medicine
  • Journal of food protection
  • 1989
TLDR
Knowledge of the effectiveness of a wide range of combinations of hurdles for a variety of microorganisms would be valuable in product development in allowing predictions of microbial stability and safety of new formulations. Expand
Water as a reservoir for Campylobacter jejuni infection in cows studied by serotyping and pulsed-field gel electrophoresis (PFGE).
TLDR
This study is first to employ molecular methods to assess the possible role of contaminated drinking water in the transmission of campylobacter infection within a dairy herd and reveal an animal that was permanently infected with C. jejuni. Expand
Occurrence and biocatalytic potential of carbohydrate oxidases.
TLDR
This chapter provides an overview of the occurrence and properties of carbohydrate oxidases and provides a summary of the biocatalytic applications of carbohydrates oxidases. Expand
...
1
2
...