Publicação
Efeito de bioconservantes no crescimento e sobrevivência de Listeria monocytogenes em queijo de ovelha
| Resumo: | Strains of Listeria monocytogenes, L.innocua and L. seeligeri, isolated from two regions producing ewe's cheese (Castelo Branco and Tolosa) were characterized. Using molecular typage (AFLP, PFGE and molecular serotyping) it was possible to do the association between a case of asymptomatic ovine listeriosis and the contamination of cheese made with raw milk and the environment, as the same molecular type was revealed (AFLP IV-1, PFGE 11 and molecular serogroup 4. The molecular characterization of 185 isolates permitted to study the routes of contamination and the persistence of L. monocytogenes with cheese processing plant. |
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| Autores principais: | Pintado, Cristina Maria Baptista Santos |
| Assunto: | Listeria monocytogenes cheese antimicrobial coatings nisin molecular typage ovine listeriosis queijo de ovelha listeriose ovina nisina tipagem molecular |
| Ano: | 2009 |
| País: | Portugal |
| Tipo de documento: | tese de doutoramento |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | português |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | Strains of Listeria monocytogenes, L.innocua and L. seeligeri, isolated from two regions producing ewe's cheese (Castelo Branco and Tolosa) were characterized. Using molecular typage (AFLP, PFGE and molecular serotyping) it was possible to do the association between a case of asymptomatic ovine listeriosis and the contamination of cheese made with raw milk and the environment, as the same molecular type was revealed (AFLP IV-1, PFGE 11 and molecular serogroup 4. The molecular characterization of 185 isolates permitted to study the routes of contamination and the persistence of L. monocytogenes with cheese processing plant. |
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