{"id":92974,"date":"2018-03-11T10:12:08","date_gmt":"2018-03-11T10:12:08","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/bacterias-lacticas-productoras-de-exopolisacaridos-analisis-estructural-de-polisacaridos-y-deteccion-molecular-de-estirpes-que-sintetizan-b-1a31a2-d-glucanos\/"},"modified":"2018-03-11T10:12:08","modified_gmt":"2018-03-11T10:12:08","slug":"bacterias-lacticas-productoras-de-exopolisacaridos-analisis-estructural-de-polisacaridos-y-deteccion-molecular-de-estirpes-que-sintetizan-b-1a31a2-d-glucanos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/metabolismo-bacteriano\/bacterias-lacticas-productoras-de-exopolisacaridos-analisis-estructural-de-polisacaridos-y-deteccion-molecular-de-estirpes-que-sintetizan-b-1a31a2-d-glucanos\/","title":{"rendered":"Bacterias lacticas productoras de exopolisacaridos: analisis estructural de polisacaridos y deteccion molecular de estirpes que sintetizan b-(1\u00c2\u00bf3)(1\u00c2\u00bf2)-d-glucanos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Idoia Ibarburu Lopez <\/strong><\/h2>\n<p>Entre los microorganismos presentes en la sidra natural producida en el pa\u00eds vasco destacan algunas bacterias del \u00e1cido l\u00e1ctico (bal) por su capacidad de producir exopolisac\u00e1ridos (eps). Los efectos delet\u00e9reos que causan los eps en la sidra debido a un aumento de la viscosidad de la bebida, se traducen en p\u00e9rdidas econ\u00f3micas para el sector sidrero. Sin embargo, la producci\u00f3n de eps por estas cepas con status gras (generally recognized as safe) despierta un inter\u00e9s biotecnol\u00f3gico en la industria alimentaria no s\u00f3lo porque mejoran la textura de algunos productos fermentados, sino tambi\u00e9n porque algunos epss tienen efectos beneficiosos para la salud.   el primer objetivo de esta tesis ha sido el aislamiento y la identificaci\u00f3n fenot\u00edpica y molecular de cepas productoras de epss a partir de sidra. De algunas cepas seleccionadas se realiz\u00f3 asimismo la caracterizaci\u00f3n estructural de sus exopolisac\u00e1ridos. La mayor parte de las cepas resultaron ser productoras del mismo beta(1\u00c2\u00ae3)(1\u00c2\u00ae2)-d-glucano, mientras que algunas produc\u00edan heteropolisac\u00e1ridos. Adem\u00e1s, se evalu\u00f3 la influencia de la composici\u00f3n del medio de cultivo sobre la producci\u00f3n de eps por la cepa oenococcus oeni i4. Finalmente, se han puesto a punto m\u00e9todos moleculares basados en la pcr para la detecci\u00f3n de cepas productoras del beta(1\u00c2\u00ae3)(1\u00c2\u00ae2)-d-glucano. Estos m\u00e9todos tienen como diana el gen gtf, que codifica para la \u00fanica glicosiltransferasa necesaria para la s\u00edntesis del beta-glucano.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Bacterias lacticas productoras de exopolisacaridos: analisis estructural de polisacaridos y deteccion molecular de estirpes que sintetizan b-(1\u00c2\u00bf3)(1\u00c2\u00bf2)-d-glucanos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Bacterias lacticas productoras de exopolisacaridos: analisis estructural de polisacaridos y deteccion molecular de estirpes que sintetizan b-(1\u00c2\u00bf3)(1\u00c2\u00bf2)-d-glucanos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Idoia Ibarburu Lopez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 24\/04\/2009<\/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>Ana Jes\u00fas Irastorza Iribas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: carmen Torres manrique <\/li>\n<li>rosa Aznar novella (vocal)<\/li>\n<li>Mar\u00eda  victoria Moreno arribas (vocal)<\/li>\n<li>Mar\u00eda Fernandez garcia (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Idoia Ibarburu Lopez Entre los microorganismos presentes en la sidra natural producida en el pa\u00eds vasco destacan [&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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