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- W1971560530 abstract "Avaliou-se a incidência de Listeria monocytogenes em queijo de coalho, produzido industrialmente e comercializado sob refrigeração na cidade de Fortaleza- CE (Brasil). Também foram avaliadas as condições de pH e de atividade de água nas amostras contaminadas com espécies de Listeria. Foram analisadas 84 amostras de queijo de coalho industrializado de diferentes marcas empregando o TECRA Listeria Visual Immunoassay (LISVIA) modificado. Das 84 amostras, 16 (19%) estavam contaminadas com Listeria monocytogenes, 5 (5,9%) com Listeria innocua e 1 (1,2%) com Listeria grayi. Listeria monocytogenes foi isolada na faixa de pH de 5,75 a 6,37 e em atividade de água entre 0,949 e 0,970. O TECRA LISVIA detectou a presença de Listeria spp. em 9 (10,7%) amostras. Todas as amostras positivas no teste rápido foram confirmadas por testes culturais e bioquímicos e em todas foi detectada a presença de Listeria monocytogenes. O plaqueamento das amostras negativas na leitura visual do teste rápido permitiu o isolamento de Listeria spp. em 8 amostras e em 7 foi detectada a presença de Listeria monocytogenes. INCIDENCE OF Listeria monocytogenes IN INDUSTRIALLY MANUFACTURED REFRIGERATED COALHO CHEESE Abstract Incidence of Listeria monocytogenes in coalho cheese industrially manufactured and commercialized in refrigerated temperature in the city of Fortaleza, Ceará (Brazil) was evaluated. Water activity and pH conditions in the contaminated samples with Listeria species were also evaluated. Samples (84) of industrialized coalho cheese of different brands were analyzed using the modified TECRA Listeria Visual Immunoassay (LISVIA). From 84 samples, 16 (19%) were contaminated with Listeria monocytogenes, 5 (5.9%) with Listeria innocua and 1 (1.2%) with Listeria grayi. Listeria monocytogenes was isolated in the pH range of 5.75 to 6.37 and in water activity between 0.949 e 0.970. The TECRA LISVIA detected the presence of Listeria spp. in 9 (10.7%) samples. All positives samples in the rapid test were confirmed by cultural and biochemical tests and in all samples the presence of Listeria monocytogenes was detected. The negative samples plating in the visual reading of the rapid test allowed the isolation of Listeria spp. in 8 samples and in 7 the presence of Listeria monocytogenes was detected." @default.
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- W1971560530 date "2003-12-31" @default.
- W1971560530 modified "2023-09-25" @default.
- W1971560530 title "INCIDÊNCIA DE Listeria monocytogenes EM QUEIJO DE COALHO REFRIGERADO PRODUZIDO INDUSTRIALMENTE" @default.
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- W1971560530 doi "https://doi.org/10.5380/cep.v21i2.1173" @default.
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