Effect of poultry decontaminants concentration on growth kinetics for pathogenic and spoilage bacteria

Food Microbiology
Elena del RíoRosa Capita

Abstract

Various chemical compounds are currently under review for final approval as poultry decontaminants in the European Union (EU). Concentration is among the factors considered by the EU authorities in the evaluation of these treatments. The aim of this research was to compare the growth parameters for pathogenic and spoilage bacteria in presence of high and low concentrations of poultry decontaminants to assess whether such treatments could involve a potential sanitary risk for consumers. Growth curves for Salmonella enterica serotype Enteritidis, Listeria monocytogenes, Pseudomonas fluorescens and Brochothrix thermosphacta were obtained at different levels of trisodium phosphate (TSP; 1.74%; 0.58%), acidified sodium chlorite (ASC; 210 ppm; 70 ppm) and citric acid (CA; 0.27%; 0.09%). The modified Gompertz equation was used as primary model to fit observed data. ASC and TSP were the most effective compounds in increasing lag phase (L) and reducing maximum growth rate (mu) in Gram-negative bacteria. Gram-positive bacteria were more influenced by CA. At high TSP levels, mu for Salmonella decreased. Low TSP levels increased mu for Salmonella and Listeria relative to control samples. In presence of 0.27% CA, Brochothrix showed the high...Continue Reading

References

Mar 25, 1998·British Poultry Science·G SalvatP Colin
Jan 7, 2003·Applied and Environmental Microbiology·Balamurugan SampathkumarDarren R Korber
Feb 27, 2007·International Journal of Food Microbiology·Elena del RíoRosa Capita

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Citations

Oct 18, 2012·International Journal of Food Microbiology·Alicia Alonso-HernandoCarlos Alonso-Calleja
Aug 26, 2017·Microorganisms·Amélie RougerMonique Zagorec
Jul 22, 2020·Risk Analysis : an Official Publication of the Society for Risk Analysis·Thomas Oscar

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