{"id":58971,"date":"2007-12-06T00:00:00","date_gmt":"2007-12-06T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/ocratoxina-a-en-muestras-de-cacao-en-grano-origen-incidencia-y-eliminacion\/"},"modified":"2007-12-06T00:00:00","modified_gmt":"2007-12-06T00:00:00","slug":"ocratoxina-a-en-muestras-de-cacao-en-grano-origen-incidencia-y-eliminacion","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/analisis-cromatografico\/ocratoxina-a-en-muestras-de-cacao-en-grano-origen-incidencia-y-eliminacion\/","title":{"rendered":"Ocratoxina a en muestras de cacao en grano: origen, incidencia y eliminacion"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Susana Amezqueta Perez <\/strong><\/h2>\n<p>#titulo: ocratoxina a en muestras de cacao en grano: origen, incidencia y eliminaci\u00f3n #resumen: ochratoxin a (ota) is a secondary fungal metabolite that produces toxicity after ingestion by animais and humans. The ue has regulated its maximum permitted levies in several foodstuffs (cereals, coffee, grapes and baby foods) and is considering the inclusion of other food commodities (cocoa, dry fruits, meat-derived products, etc.). In this work, several cocoa grain samples bought in spain and imported from africa have been analysed for ota. Since 70 % of the samples were contaminated, a microbiological analysis was carried out to determine if fungi present in cocoa grains were responsible for this contamination. A relationship between ochratoxigenic fungi and the ota lev\u00e9is found was not established. Therefore, contamination took place during a phase previous to that of storage, in the importing country. The mycotoxin distribution in cocoa gram was then studied and it was observed that the presence of this mycotoxin was principally found on the shell. Taking into account that cocoa shell is used for manufacturing fibber-enriched foodstuffs, chemical treatment for the elimination of the toxin has been developed. It is capable of eliminating, a minimum of 97.6 % of the initial ota. All of the analytical methods used were validated in terms of selectivity, linearity, precision and accuracy, lod and loq, robustness and uncertainty.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Ocratoxina a en muestras de cacao en grano: origen, incidencia y eliminacion<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Ocratoxina a en muestras de cacao en grano: origen, incidencia y eliminacion <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Susana Amezqueta Perez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Navarra<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/06\/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>Mar\u00eda Elena Gonz\u00e1lez Pe\u00f1as<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: arturo Hardisson de la torre <\/li>\n<li>josep llu\u00eds Torres sim\u00f3n (vocal)<\/li>\n<li>Mar\u00eda  iciar Astiasaran anchia (vocal)<\/li>\n<li>joseph-pierre Guiraud (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Susana Amezqueta Perez #titulo: ocratoxina a en muestras de cacao en grano: origen, incidencia y eliminaci\u00f3n #resumen: [&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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