{"id":59884,"date":"2007-12-07T00:00:00","date_gmt":"2007-12-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/produccion-de-astaxantina-por-la-microalga-haematococcus-pluvialis-en-cultivo-continuo\/"},"modified":"2007-12-07T00:00:00","modified_gmt":"2007-12-07T00:00:00","slug":"produccion-de-astaxantina-por-la-microalga-haematococcus-pluvialis-en-cultivo-continuo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/bioquimica\/produccion-de-astaxantina-por-la-microalga-haematococcus-pluvialis-en-cultivo-continuo\/","title":{"rendered":"Producci\u00f3n de astaxantina por la microalga haematococcus pluvialis en cultivo continuo"},"content":{"rendered":"<h2>Tesis doctoral de <strong> M\u00aa Esperanza Del Rio Sanchez <\/strong><\/h2>\n<p>La astaxantina es un carotenoide de alto valor comercial con aplicaciones en la industria alimentaria y de piensos, as\u00ed como en nutrac\u00e9utica y cosm\u00e9tica. La microalga haematococcus pluvialis representa una importante fuente de astaxantina, pudiendo acumular hasta un 3% del pigmento. La acumulaci\u00f3n se induce en condiciones de estr\u00e9s nutricional y\/o ambiental, que conllevan el enquistamiento de las c\u00e9lulas. Los actuales sistemas de producci\u00f3n industrial responden al esquema de dos fases, una primera de crecimiento activo del organismo, seguida de otra en la que se propicia el enquistamiento y la acumulaci\u00f3n de astaxantina. Aunque existe abundante informaci\u00f3n acerca de factores que influencian la acumulaci\u00f3n de astaxantina en esta microalga, muchas de las conclusiones sobre efectos de luz y nutrientes -particularmente nitr\u00f3geno- son confusas y a veces contradictorias, especialmente cuando derivan de experiencias desarrolladas en cultivos en r\u00e9gimen estanco. para clarificar la influencia de luz y nutrici\u00f3n nitrogenada sobre la acumulaci\u00f3n de astaxantina por h.Pluvialis hemos utilizado el sistema de cultivo continuo en fotoquimiostato. Esta aproximaci\u00f3n permite el an\u00e1lisis de cada factor de manera individualizada, manteniendo constante el resto de par\u00e1metros, habi\u00e9nodose as\u00ed verificado que en condicones de suficiencia de nutrientes, la elevada irradiancia luminosa por s\u00ed sola no es suficiente para inducir la acumulaci\u00f3n de astaxantina en h.Pluvialis. La acumulaci\u00f3n de astaxantina en h.Pluvialis. La acumulaci\u00f3n de astaxantina se desencadena al limitar la disponibilidad de nitrato, de forma selectiva y moderada, sin que se modifique la tasa de crecimiento y division celular. Puede disponerse as\u00ed de c\u00e9lulas en activo crecimiento que acumulan astaxantina, combinaicon que determina elevados valores de productividad del pigmento y que representa una v\u00eda de gran inter\u00e9s para la producci\u00f3n de astaxantina por este organismo en un sistema de una sola f<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Producci\u00f3n de astaxantina por la microalga haematococcus pluvialis en cultivo continuo<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Producci\u00f3n de astaxantina por la microalga haematococcus pluvialis en cultivo continuo <\/li>\n<li><strong>Autor:<\/strong>\u00a0 M\u00aa Esperanza Del Rio Sanchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Sevilla<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/07\/2007<\/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 Garc\u00eda Guerrero<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Emilio Molina grima <\/li>\n<li>Francisco Javier Florencio bellido (vocal)<\/li>\n<li>Antonio  Jos\u00e9 M\u00e1rquez cabeza (vocal)<\/li>\n<li>agustin Gonzalez fontes de albornoz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de M\u00aa Esperanza Del Rio Sanchez La astaxantina es un carotenoide de alto valor comercial con aplicaciones 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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