{"id":22389,"date":"2003-03-04T00:00:00","date_gmt":"2003-03-04T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/preparacion-automatica-de-alimentos-para-la-determinacion-de-aditivos-por-cromatografa%c2%ada\/"},"modified":"2003-03-04T00:00:00","modified_gmt":"2003-03-04T00:00:00","slug":"preparacion-automatica-de-alimentos-para-la-determinacion-de-aditivos-por-cromatografa%c2%ada","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/preparacion-automatica-de-alimentos-para-la-determinacion-de-aditivos-por-cromatografa%c2%ada\/","title":{"rendered":"Preparaci\u00f3n autom\u00e1tica de alimentos para la determinaci\u00f3n de aditivos por cromatograf\u00eda"},"content":{"rendered":"<h2>Tesis doctoral de <strong> M\u00f3nica Gonz\u00e1lez Gonz\u00e1lez <\/strong><\/h2>\n<p>El objetivo de esta tesis se centr\u00f3 en la automatizaci\u00f3n y simplificaci\u00f3n de las operaciones previas del proceso anal\u00edtico para la determinaci\u00f3n de aditivos en alimentos.  la simplificaci\u00f3n y automatizaci\u00f3n alcanzados con los m\u00e9todos desarrollados permiti\u00f3 conseguir ventajas sustanciales respecto a las metodolog\u00edas convencionales, en t\u00e9rminos de calidad informativa y de m\u00ednimos esfuerzos, costes y riesgos para el operador y el medio ambiente.  se desarrollaron tres m\u00e9todos para la determinaci\u00f3n de antioxidantes y conservantes y de ambos tipos de aditivos de forma simult\u00e1nea, en bebidas y alimentos con alto contendio en az\u00facares, grasas y\/o prote\u00ednas. Todos los m\u00e9todos incluyeron la preconcentraci\u00f3n de los anallitos y la separaci\u00f3n de \u00e9stos de la matriz de la muestra mediante extracci\u00f3n en fase s\u00f3lida autom\u00e1tica.  la separaci\u00f3n de antioxidantes y conservantes se realiz\u00f3 mediante cromatograf\u00eda de gases con detectores de ionizaci\u00f3n de llama y de espectrometr\u00eda de masas.  los sistemas desarrollados permitieron la sustituci\u00f3n de la derivatizaci\u00f3n convencional de los triglic\u00e9ridos en muestras grasas previa a la determinaci\u00f3n de estos aditivos por cromatograf\u00eda de gases.  existe un inter\u00e9s creciente en la obtenci\u00f3n de sistemas anal\u00edticos que den respuestas si\/no r\u00e1pidas y fiables, m\u00e1s que en una informaci\u00f3n qu\u00edmica detallada.  en este contexto se desarroll\u00f3 un m\u00e9todo espectrofotom\u00e9trico de screening para la discriminaci\u00f3n de colorantes sint\u00e9ticos y naturales en alimentos.  todos los m\u00e9todos de screening han de ir acompa\u00f1ados de un m\u00e9todo de confirmaci\u00f3n de los resultados positivos del m\u00e9todo de screening, por lo que se desarroll\u00f3 un m\u00e9todo para la confirmaci\u00f3n de los resultados mediante cromatograf\u00eda de l\u00edquidos acoplada con un detector de diodos en fila.  adem\u00e1s se optimiz\u00f3 la extracci\u00f3n de colorantes a partir de productos l\u00e1cteos y alimentos grasos que han sido previamente lio<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Preparaci\u00f3n autom\u00e1tica de alimentos para la determinaci\u00f3n de aditivos por cromatograf\u00eda<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Preparaci\u00f3n autom\u00e1tica de alimentos para la determinaci\u00f3n de aditivos por cromatograf\u00eda<\/li>\n<li><strong>Autor:<\/strong>\u00a0 M\u00f3nica Gonz\u00e1lez Gonz\u00e1lez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00f3rdoba<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 03\/04\/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>Miguel Valcarcel Cases<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: diego Santiago laguna <\/li>\n<li> Rodr\u00edguez fern\u00e1ndez adela rosa (vocal)<\/li>\n<li>manuela Juarez iglesias (vocal)<\/li>\n<li>Luis fermin Capitan vallvey (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M\u00f3nica Gonz\u00e1lez Gonz\u00e1lez El objetivo de esta tesis se centr\u00f3 en la automatizaci\u00f3n y simplificaci\u00f3n de las [&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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