{"id":23902,"date":"2018-03-09T09:14:38","date_gmt":"2018-03-09T09:14:38","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/tratamientos-combinados-de-bacteriocinas-y-otros-sistemas-inhibitorios-para-la-mejora-de-la-seguridad-de-los-productos-lacteos\/"},"modified":"2018-03-09T09:14:38","modified_gmt":"2018-03-09T09:14:38","slug":"tratamientos-combinados-de-bacteriocinas-y-otros-sistemas-inhibitorios-para-la-mejora-de-la-seguridad-de-los-productos-lacteos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/tratamientos-combinados-de-bacteriocinas-y-otros-sistemas-inhibitorios-para-la-mejora-de-la-seguridad-de-los-productos-lacteos\/","title":{"rendered":"Tratamientos combinados de bacteriocinas y otros sistemas inhibitorios para la mejora de la seguridad de los productos l\u00e1cteos"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Arqu\u00e9s Orob\u00f3n Juan  Luis <\/strong><\/h2>\n<p>En el presente trabajo se ha estudiado el efecto de la aplicaci\u00f3n en caldo de cultivo, leche, cuajada y queso de pasta prensada, de combinaciones de antimicrobianos naturales y de tratamientos de altas presiones sobre la supervivencia de distintos pat\u00f3genos de importancia en la industria l\u00e1ctea como listeria monocytogenes, staphulococcus aureus, escherichia coli o157:h7, salmonella choleraesusis, campylobacter jejuni, aeromonas hydrophila, yersinia enterocolitica y bacillus cereus.  los antimicrobianos empleados fueron bacteriocinas (nisina a, nisina z, lacticina 481, enterocina i, enterocina as-48 y tres bacteriocinas no caracterizadas denominadas tab 7, tab 20 y tab 57), el sistema lactoperoxidasa (lp), reuterina obtenida en el presente trabajo y citrato. La reuterina se obtuvo a partir del aislado lb.Reuteri pro 137. \u00e9Sta se purifici\u00f3 y concentr\u00f3 mediante t\u00e9cnicas cromatogr\u00e1ficas para sus aplicaci\u00f3n en los experimentos.  el efecto inhibitorio de las bacteriocinas a\u00f1adidas individualmente frente a l.Monocytogenes en leche a 37\u00c2\u00bac no aument\u00f3 al aplicarlas en combinaci\u00f3n con nisina comercial, a excepci\u00f3n de la combinaci\u00f3n nisina-enterocina as-48 que dio lugar a una mayor reducci\u00f3n del pat\u00f3geno.  el leche refrigerada a 4\u00c2\u00bac y 8\u00c2\u00bac con la combinaci\u00f3n sistema lp-nisina no se detect\u00f3 l.Monocytogenes, observ\u00e1ndose un efecto inhibitorio sin\u00e9rgico. frente a s.Aureus este efecto s\u00f3lo se comprob\u00f3 a 8\u00c2\u00bac.  la reuterina mostr\u00f3 un efecto bactericida frente a todos los pat\u00f3genos investigados excepto frente a l.Monocytogenes, con un efecto bacteriost\u00e1tico. la combinaci\u00f3n de reuterina con nisina, lacticina 481 o enterocina as-48 inhibi\u00f3 completamente a l.Monocytogenes a 37\u00c2\u00bac, as\u00ed como la combinaci\u00f3n con nisina en leche refrigerada. La aplicaci\u00f3n con bacteriocinas no increment\u00f3 el efecto bactericida de la reuterina frente a los pat\u00f3genos gram-negativos. con el sistema lp-reuterina se confirm\u00f3 la inhibici\u00f3n completa d<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Tratamientos combinados de bacteriocinas y otros sistemas inhibitorios para la mejora de la seguridad de los productos l\u00e1cteos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Tratamientos combinados de bacteriocinas y otros sistemas inhibitorios para la mejora de la seguridad de los productos l\u00e1cteos <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Arqu\u00e9s Orob\u00f3n Juan  Luis <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 25\/06\/2003<\/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>regatillo Medina Fernandez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan  Antonio Ordo\u00f1ez pereda <\/li>\n<li> Roig sagu\u00e9s arturo Javier (vocal)<\/li>\n<li> Requena rola\u00edna Mar\u00eda teresa (vocal)<\/li>\n<li>margarita Garriga i tur\u00f3n (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Arqu\u00e9s Orob\u00f3n Juan Luis En el presente trabajo se ha estudiado el efecto de la aplicaci\u00f3n en [&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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