Ocorrência de Listeria monocytogenes em produtos de carne de peru comercializados na cidade de Niterói-RJ-Brasil

Abstract

Listeria monocytogenes has created great concern among health authorities since the 1980's because of an increase in the number of outbreaks of human listeriosis and its possible association with contaminated food. There are no reports of an association between listeriosis and food contamination in Brazil, although recent studies have identified this bacteria in poultry meat. The goals of the present study were to investigate the incidence of L. monocytogenes in commercial turkey meat, to evaluate the bacterial sensitivity to antimicrobial agents, and to conduct serology tests of L. monocytogenes isolates. Forty samples of turkey meat were studied: 10 samples of whole turkey blanquet, 10 samples of sliced turkey blanquet, 10 samples of whole turkey ham, and 10 samples of sliced turkey ham. These samples were inspected by the Brazilian Federal Inspection Service and were retailed in the city of Niterói. Bacteria were not detected in whole products; however, incidence was high in sliced products (80% in blanquet and 90% in ham). Isolates of L. monocytogenes, which belonged to serovars 4b, ½ c, ½ b, and ½ a, were found to be sensitive to all antimicrobial agents tested. The most common serovars were those known to cause listeriosis. Despite the lack of isolation of L. monocytogenes in whole meat, its presence in sliced turkey meat indicates that improved sanitation in the processes of slicing and packaging is urgently needed.

Microbiological quality and sensory evaluation of new cured products obtained from sheep and goat meat

“…Studies conducted with turkey 'Blanquet' and turkey ham, verified the absence of Listeria spp. in the whole products and great amounts in the sliced products, suggesting the possibility of an inadequate manipulation in the moment of slicing and storage (Araújo et al 2002). The presence of L.…”

Bioconservação de pescado (surubim Pseudoplatystoma sp) com utilização da bactéria lática bacteriocinogênica (Carnobacterium maltaromaticum C2) e de extratos vegetais de alecrim pimenta (Lippia sidoides Cham.)

“…L. monocytogenes é amplamente dispersa na natureza e já foi isolada de diferentes alimentos como leite cru e pasteurizado, queijos, lingüiça frescal, salame, carne de peru, peixes, embutidos cárneos, alimentos prontos para consumo, além de produtos de origem vegetal (ARAÚJO et al, 2002;ATANASSOVA;REICH;KLEIN, 2008;BORGES et al, 1999;CABEDO et al, 2008;GONZÁLEZ-RODRÍGUEZ et al, 2002;PAO et al, 2008;SAKATE et al 2003;SILVA et al, 2004).…”

Cross contamination of <i>Listeria monocytogenes</i> in ready-to-eat meat product during slicing: a predictive approach

“…Borges et al (1999) tested four types of salami from different commercial brands, and L. monocytogenes was found in 13.3% of the samples. Araújo et al (2002) tested two types of products formulated with turkey meat (ham and blanquet), comparing positivity for L. monocytogenes in whole products acquired in their original package and in samples of the same type of products sliced in the store. The pathogen was not detected in whole products, but 60.0% and 50.0% of sliced ham and blanquet, respectively, were positive.…”