{"id":37916,"date":"2018-03-09T09:37:15","date_gmt":"2018-03-09T09:37:15","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/fitoecdisteroides-analisi-produccio-i-biosintesi\/"},"modified":"2018-03-09T09:37:15","modified_gmt":"2018-03-09T09:37:15","slug":"fitoecdisteroides-analisi-produccio-i-biosintesi","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/fitoecdisteroides-analisi-produccio-i-biosintesi\/","title":{"rendered":"Fitoecdisteroides: analisi, produccio i biosintesi."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Natalia Reixach Feixes <\/strong><\/h2>\n<p>La presente tesis se engloba en el \u00e1mbito de los ecdisteroides de or\u00edgen vegetal, los llamados fitoecdisteroides, una familia de compuestos que presentan diferentes actividades de hormona de muda para artr\u00f3podos. Se utilizaron para \u00e9ste trabajo diferentes cultivos de tejidos in vitro del helecho polypodium vulgare.  concretamente se desarroll\u00f3 un sistema cromatogr\u00e1fico de hplc en fase inversa y gradiente para la correcta resoluci\u00f3n de todos los ecdisteroides presentes en los extractos de dichos cultivos. Gracias a este m\u00e9todo, se pudieron aislar y identificar dos ecdisteroides uno de los cuales hab\u00eda sido descrito de antemano en otras fuentes vegetales, mientras que el otro fu\u00e9 aislado y caracterizado por primera vez en este trabajo. Se realizaron estudios sistem\u00e1ticos de los ecdisteroides de extractos de diferentes tejidos in vivo e in vitro de p.  vulgare.  tambi\u00e9n se dise\u00f1\u00f3 y desarroll\u00f3 de un ensayo inmunoenzim\u00e1tico elisa competitivo directo para el an\u00e1lisis de los ecdisteroides de or\u00edgen animal y vegetal, siendo el primero de \u00e9ste formato descrito para los ecdisteroides.  otra parte del trabajo se dedic\u00f3 al hallazgo de un m\u00e9todo de aumentar la producci\u00f3n de ecdisteroides en los cultivos in vitro de hasta 23 veces, sumergiendo dichos cultivos en agua a 45grados c. Durante 10 horas.  finalmente se estudi\u00f3 la bios\u00edntesis de los ecdisteroides utilizando 13 posibles precursores radioactivos los cuales se aplicaron t\u00f3picamente sobre los tejidos y despu\u00e9s de diferentes tiempos de incubaci\u00f3n se realizaron los extractos y se analizaron mediante hplc acoblado a un detector radioqu\u00edmico.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Fitoecdisteroides: analisi, produccio i biosintesi.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Fitoecdisteroides: analisi, produccio i biosintesi. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Natalia Reixach Feixes <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/02\/1998<\/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>Francesc Camps Diez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: josep Coll toledano <\/li>\n<li>gemma Fabrias domingo (vocal)<\/li>\n<li>Carlos Codina mahrer (vocal)<\/li>\n<li>david Andreu mart\u00ednez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Natalia Reixach Feixes La presente tesis se engloba en el \u00e1mbito de los ecdisteroides de or\u00edgen vegetal, [&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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