{"id":85386,"date":"2018-03-10T00:09:49","date_gmt":"2018-03-10T00:09:49","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aportacion-al-conocimiento-de-aspergillus-seccion-nigri\/"},"modified":"2018-03-10T00:09:49","modified_gmt":"2018-03-10T00:09:49","slug":"aportacion-al-conocimiento-de-aspergillus-seccion-nigri","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/aportacion-al-conocimiento-de-aspergillus-seccion-nigri\/","title":{"rendered":"\u00abaportacion al conocimiento de aspergillus seccion nigri\u00bb"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Francesc Accensi Alemany <\/strong><\/h2>\n<p>Los integrantes de la secci\u00f3n nigri sonunos de los m\u00e1s importantes del g\u00e9nero aspergillus. De distribuci\u00f3n ubicua, algunas de sus especies se utilizan ampliamente en la industria alimentaria y poseen la categoria de gras(\u00abgenerally regarded as safe\u00bb) de la fda. Pese a ello, se ha descrito la capacidad de elaborar ocratoxina a(oa)por parte de los integrantes del agregado a.Niger, lo que supone un riesgo inesperado para la salud humana y animal. Por otro lado, la taxonomia de la seccion nigri es una de las m\u00e1s complejas del genero y esta basada fundamentalmente en criterios morfologicos. en una de las \u00faltimas revisiones se cre\u00f3 el agregado a.Niger, constituido por dos especies, seis variedades y dos formas. En un intento de clarificar la taxonom\u00eda del agregado, se ha propuesto  la divisi\u00f3n del agregado en dos especies, morfol\u00f3gicamente indistinguibles, denominadas a.Niger y a.Tubingensis atendiendo a patrones de rflp obtenidos del dna total.  en el presente trabajo se determin\u00f3 la frecuencia de aparici\u00f3n de las especies del genero aspergillus y en especial de las especies de la secci\u00f3n nigri en piensos y materias primas y se estudi\u00f3 la capacidad ocratoxig\u00e9nica de las cepas de esta secci\u00f3n. Con el fin de estudiar la distribuci\u00f3n de las dos especies propuestas en los substratos estudiados describimos una nueva tecnica de rflp m\u00e1s sencilla y f\u00e1cil de interpretar y que permite diferenciar de forma m\u00e1s clara estos grupos de cepas. Paralelamente, se realiz\u00f3 un estudio de las caracter\u00edsticas morfol\u00f3gicas macroscopicas y microsc\u00f3picas de las cepas y su comportamiento a distintas temperaturas y concentraciones de nac1.  de entre los resultados obtenidos, destacamos los siguientes:  las especies del g\u00e9nero aspergillus se aislaron frecuentemente en los substratos estudiados, en especial en piensos. Su recuento parcial en este tipo de muestras represent\u00f3 m\u00e1s del 50% del recuento fungico total. De las especies productoras de<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>\u00abaportacion al conocimiento de aspergillus seccion nigri\u00bb<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 \u00abaportacion al conocimiento de aspergillus seccion nigri\u00bb <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Francesc Accensi Alemany <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/06\/2000<\/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>Lourdes Abarca Salat<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jos\u00e9 Mart\u00ednez peinado <\/li>\n<li>josep Girbal llado (vocal)<\/li>\n<li>vicente Sanchis almenar (vocal)<\/li>\n<li>Jos\u00e9 Cano lira (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Francesc Accensi Alemany Los integrantes de la secci\u00f3n nigri sonunos de los m\u00e1s importantes del g\u00e9nero aspergillus. [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[494,35,515,1654,278,2391,13906],"tags":[169247,85765,2604,20166,13908,17021],"class_list":["post-85386","post","type-post","status-publish","format-standard","hentry","category-ciencias-agrarias","category-ciencias-de-la-vida","category-ciencias-veterinarias","category-micologia","category-microbiologia","category-microbiologia-veterinaria","category-mohos","tag-francesc-accensi-alemany","tag-jose-cano-lira","tag-jose-Martinez-peinado","tag-josep-girbal-llado","tag-lourdes-abarca-salat","tag-vicente-sanchis-almenar"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/85386","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=85386"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/85386\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=85386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=85386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=85386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}