CIDCA   05380
CENTRO DE INVESTIGACION Y DESARROLLO EN CRIOTECNOLOGIA DE ALIMENTOS
Unidad Ejecutora - UE
artículos
Título:
Isolation and Characterization of Shiga toxin-producing Escherichia coli isolated from pre-cooking sausage (Morcilla)
Autor/es:
OTEIZA JM; CHINEN I; MILIWEBSKY E; RIVAS M
Revista:
FOOD MICROBIOLOGY
Referencias:
Año: 2006 vol. 23 p. 283 - 288
ISSN:
0740-0020
Resumen:
Abstract
The aim of the study was to establish the microbiological quality of morcillas, typical Argentine sausages, and to investigate the
presence of Shiga toxin-producing Escherichia coli (STEC). Between October 2001 and October 2002, a total of 100 morcilla samples
were analysed. Several samples showed high levels of total aerobic mesophilic bacteria counts, molds and yeasts. The samples
analysed contained Enterobacteriaceae (100%) and fecal coliforms (81%), indicating inadequate application of the thermal
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
were analysed. Several samples showed high levels of total aerobic mesophilic bacteria counts, molds and yeasts. The samples
analysed contained Enterobacteriaceae (100%) and fecal coliforms (81%), indicating inadequate application of the thermal
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
Escherichia coli (STEC). Between October 2001 and October 2002, a total of 100 morcilla samples
were analysed. Several samples showed high levels of total aerobic mesophilic bacteria counts, molds and yeasts. The samples
analysed contained Enterobacteriaceae (100%) and fecal coliforms (81%), indicating inadequate application of the thermal
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7
Enterobacteriaceae (100%) and fecal coliforms (81%), indicating inadequate application of the thermal
treatment and deficient hygiene conditions during the elaboration of the product.
STEC strains were isolated from three out of 100 (3%) morcilla samples. Two strains (2%) were characterized as E. coli O157:H7E. coli O157:H7
stx2+stx2vh-a/eae/EHEC-hlyA and one strain (1%), as E. coli O26:H11 stx1/eae/EHEC-hlyA. Considering both the high microbial
count in all tested samples and the presence of STEC strains in three of them, morcillas should be considered a food unsafe to
consume when inadequately cooked.
count in all tested samples and the presence of STEC strains in three of them, morcillas should be considered a food unsafe to
consume when inadequately cooked.
2+stx2vh-a/eae/EHEC-hlyA and one strain (1%), as E. coli O26:H11 stx1/eae/EHEC-hlyA. Considering both the high microbial
count in all tested samples and the presence of STEC strains in three of them, morcillas should be considered a food unsafe to
consume when inadequately cooked.