{"id":18280,"date":"2002-10-07T00:00:00","date_gmt":"2002-10-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/determinacion-automatizada-de-isomeros-de-vitamina-e-en-muestras-agroalimentarias-mediante-cromatografa%c2%ada-la%c2%adquida\/"},"modified":"2002-10-07T00:00:00","modified_gmt":"2002-10-07T00:00:00","slug":"determinacion-automatizada-de-isomeros-de-vitamina-e-en-muestras-agroalimentarias-mediante-cromatografa%c2%ada-la%c2%adquida","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/determinacion-automatizada-de-isomeros-de-vitamina-e-en-muestras-agroalimentarias-mediante-cromatografa%c2%ada-la%c2%adquida\/","title":{"rendered":"Determinaci\u00f3n automatizada de is\u00f3meros de vitamina e en muestras agroalimentarias mediante cromatograf\u00edal\u00edquida"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Myriam Bustamante Rangel <\/strong><\/h2>\n<p>En este trabajo se ha desarrollado una metdolog\u00eda anal\u00edtica para la separaci\u00f3n de los compuestos relacionados con la vitamina de forma automatizada utilizando cromatograf\u00eda l\u00edquida de alta resoluci\u00f3n (hplc) en una fase inversa. La detecci\u00f3n de los analitos se ha llevado a cabo mediante un detector culombim\u00e9trico.  una vez lograda la separaci\u00f3n de los analitos, se ha aplicado la metodolog\u00eda desarrollada al an\u00e1lisis de muestras de diferentes alimentos que contienen esta vitamina de forma natural, con objeto de separar y cuantificar la vitamina e en los mismos, utilizando tratamientos de muestra lo m\u00e1s sencillos posibles y que puedan ser acoplados \u00abon-line\u00bb a la separaci\u00f3n y detecci\u00f3n cromatogr\u00e1ficas.  para ello se han desarrollado dos metodolog\u00edas anal\u00edticas: en la primera de ellas se lleva a cabo la extracci\u00f3n directa de la vitamina e de las muestras a trav\u00e9s de una membrana de silicona no porosa, acoplada en continuo con el sistema cromatogr\u00e1fico; la segunda metodolog\u00eda incluye una etapa de hidr\u00f3lisis alcalina de la materia grasa, seguida de la extracci\u00f3n de los analitos a trav\u00e9s de la membrana.  los alimentos estudiados han sido: mantequillas, aceites vegetales de diferente origen, margarinas y distintos frutos secos, proponiendo en cada caso la metodolog\u00eda m\u00e1s sencilla que produzca los mejores resultados.  para validar los m\u00e9todos desarrollados, se han comparado los resultados obtenidos utilizando estas metodolog\u00edas con los que se obtienen al aplicar los m\u00e9todos cl\u00e1sicos de an\u00e1lisis. Adem\u00e1s, se ha analizado una muestra de margarina con contenido certificado en alfa-tocoferol siguiendo las mismas metodolog\u00edas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Determinaci\u00f3n automatizada de is\u00f3meros de vitamina e en muestras agroalimentarias mediante cromatograf\u00edal\u00edquida<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Determinaci\u00f3n automatizada de is\u00f3meros de vitamina e en muestras agroalimentarias mediante cromatograf\u00edal\u00edquida <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Myriam Bustamante Rangel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 10\/07\/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>Mar\u00eda  Milagros Delgado Zamarre\u00f1o<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rita Carabias mart\u00ednez <\/li>\n<li>Antonio S\u00e1nchez misiego (vocal)<\/li>\n<li>francisca Vicente estevez (vocal)<\/li>\n<li> Gonz\u00e1lez de buitrago arriero Jos\u00e9 Manuel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Myriam Bustamante Rangel En este trabajo se ha desarrollado una metdolog\u00eda anal\u00edtica para la separaci\u00f3n de los 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