{"id":21064,"date":"2018-03-09T09:10:39","date_gmt":"2018-03-09T09:10:39","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-de-cepas-de-enterococos-aisladas-a-partir-de-alimentos\/"},"modified":"2018-03-09T09:10:39","modified_gmt":"2018-03-09T09:10:39","slug":"caracterizacion-de-cepas-de-enterococos-aisladas-a-partir-de-alimentos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/jaen\/caracterizacion-de-cepas-de-enterococos-aisladas-a-partir-de-alimentos\/","title":{"rendered":"Caracterizaci\u00f3n de cepas de enterococos aisladas a partir de alimentos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Araceli Castro Aranda <\/strong><\/h2>\n<p>El presente trabajo de investigaci\u00f3n consisiti\u00f3 en evaluar la presencia de enterococos en muestras procedentes de alimentos c\u00e1rnicos, l\u00e1cteos y vegetales, observ\u00e1ndose seg\u00fan los perfiles de rapd que la especie predominante fue e.Faecium frente a e.Faecalis.  en ninguna de las cepas estudiadas se detectaron caracteres de virulencia ni presencia de genes para la citolisina, la prote\u00edna de superficie esp de los enterecocos, o la adhesina para el col\u00e1geno, al igual que fue negativa la inducci\u00f3n de la agregaci\u00f3n mediante adici\u00f3n de feromonas sexuales ex\u00f3genas.  en cuanto a los antibi\u00f3ticos, todas las cepas sensibles a los antibi\u00f3ticos ampicilina, penicilina, esteptomicina y gentamicina, mientras que los porcentajes m\u00e1s altos de resistencia fueron detectados frente a la rifampicina, ciprofloxacina, y tetraciclina para e.Faecium. Tan solo una cepa mostr\u00f3 resistencoa a la vancomicina.  un porcentaje elevado de cepas mostr\u00f3 propiedades funcionales, tales como la capacidad para hidrolizar la rafinosa, la estaquiosa o las sales biliares.  muchas de las cepas estudiadas eran capaces de producir bacteriocinas, mostrando todas las cepas productoras actividad anti-listerina. El 82.35% de las cepas portaban genes estructurales para las enterocinas a, b o p.  centrando el estudio en tres de las cepas productoras se observ\u00f3 que eran estables al calor, a valores extremos de ph, y a los agentes reductores, al igual que eran capaces de mostrar actividad frente a diferentes cepas de e.Faecalis, l.Innocua, l.Monocytogenes, s.Aureus, y b.Subtilis.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n de cepas de enterococos aisladas a partir de alimentos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n de cepas de enterococos aisladas a partir de alimentos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Araceli Castro Aranda <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Ja\u00e9n<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/12\/2002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Antonio Galvez Del Postigo Ruiz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jean-pierre Guyot <\/li>\n<li>eva Valdivia Martinez (vocal)<\/li>\n<li>fernanda Ruiz larrea (vocal)<\/li>\n<li>rufino Jim\u00e9nez d\u00edaz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Araceli Castro Aranda El presente trabajo de investigaci\u00f3n consisiti\u00f3 en evaluar la presencia de enterococos en muestras [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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