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Título: Sensitivity to organic acids in vitro and in situ of Salmonella spp. and Escherichia coli isolated from fresh pork sausages
Autor(es): Ávila, Amanda Rejane Alves de
Marques, Simone Cristina
Piccolli, Roberta Hilsdorf
Schwan, Rosane Freitas
Assunto: Pork sausage
Organic acids - Antibacterial action
Salmonella
Escherichia coli
Publicador: Wiley
Data de publicação: 27-Fev-2013
Referência: ÁVILA, A. R. A. de et al. Sensitivity to organic acids in vitro and in situ of Salmonella spp. and Escherichia coli isolated from fresh pork sausages. Journal of Food Quality, Wastport, v. 36, n. 3, p. 155-163, June 2013.
Abstract: The production of fresh pork sausages inoculated with different multi-resistant bacterial strains, isolated from sausage commercially purchased from Brazil, was conducted to evaluate microbial inhibition by lactic acid. The isolates were identi- fied through 16S rDNA region sequencing and the bacteria with antimicrobial multi-resistance profiles were selected. The minimum bactericidal concentration was determined using lactic and acetic acids. Samples were contaminated by Salmonella Typhi, Salmonella Typhimurium, Salmonella Paratyphi, Escherichia coli and high counts of aerobic mesophilic bacteria. Antibiotic resistance was detected in 21 of the 27 analyzed isolates (six Salmonella spp. and 21 E. coli ). In the minimum bactericidal concentration test, lactic acid was more effective than acetic acid in the reduction of the bacterial population. The food matrix inoculated with two bacterial strains ( E. coli, Salmonella spp.) was treated with lactic acid at the concentrations of 1.5 and 4.0 M and showed no significant effect on the bacterial population.
URI: http://onlinelibrary.wiley.com/doi/10.1111/jfq.12026/full
http://repositorio.ufla.br/jspui/handle/1/10903
Idioma: en_US
Aparece nas coleções: DCA - Artigos publicados em periódicos

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