Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
J Food Prot ; 82(10): 1769-1774, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31538830

RESUMO

Previous studies have shown the efficacy of high concentrations of salt as the main preservative against vegetative bacteria present on natural sausage casings. These studies were limited in the number of variables and the interactions between these variables that were assessed. To remedy this situation, a MicroCasing high-throughput model was developed and validated to study the inactivation kinetics of various combinations of parameters (salt concentration, pH, and temperature) on eight bacterial isolates of Salmonella enterica, Staphylococcus aureus, Escherichia coli, and Listeria monocytogenes over a prolonged period. A Weibullian power model was the best fit to show the trends in sensitivity of each bacterial isolate to salt, pH, and temperature over time. The inactivation kinetics generated with this novel approach could serve as a predictive model for the required salting period for casings. The actual bacterial contamination of the product can vary with the respective production step during processing from animal intestine into sausage casings (initial level, ∼105 CFU/g; level after salting, <102 CFU/g). Subsequent selection and grading of these casings will require complete removal of all salt, and upon completion of this production step, the casings will be resalted. By determining the actual contamination level before the salting process, the minimum storage period in salt can be calculated and potentially optimized by adjusting the pH and temperature. As a result, a standard holding period of at least 30 days may no longer be necessary to produce salted natural casings in accordance with validated quality and food safety criteria.


Assuntos
Microbiologia de Alimentos , Produtos da Carne , Viabilidade Microbiana , Cloreto de Sódio , Temperatura , Animais , Contagem de Colônia Microbiana , Manipulação de Alimentos/métodos , Microbiologia de Alimentos/métodos , Microbiologia de Alimentos/normas , Concentração de Íons de Hidrogênio , Listeria monocytogenes , Produtos da Carne/microbiologia , Cloreto de Sódio/farmacologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...