["item",{"itemId":"2420","public":"1","featured":"1","xmlns:xsi":"http://www.w3.org/2001/XMLSchema-instance","xsi:schemaLocation":"http://omeka.org/schemas/omeka-xml/v5 http://omeka.org/schemas/omeka-xml/v5/omeka-xml-5-0.xsd","uri":"https://bvhumanidades.usac.edu.gt/items/show/2420?output=omeka-json","accessDate":"2026-04-27T00:41:49-05:00"},["fileContainer",["file",{"fileId":"2342"},["src","https://bvhumanidades.usac.edu.gt/files/original/b1c69ad3b1b6afbc016866001e62c540.pdf"],["authentication","b7c6dd943675dc69db5deda4f5a7c810"]]],["collection",{"collectionId":"5"},["elementSetContainer",["elementSet",{"elementSetId":"1"},["name","Dublin Core"],["description","The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/."],["elementContainer",["element",{"elementId":"50"},["name","Title"],["description","A name given to the resource"],["elementTextContainer",["elementText",{"elementTextId":"7455"},["text","PEDAGOGÍA"]]]]]]]],["itemType",{"itemTypeId":"1"},["name","Text"],["description","A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text."]],["elementSetContainer",["elementSet",{"elementSetId":"1"},["name","Dublin Core"],["description","The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/."],["elementContainer",["element",{"elementId":"50"},["name","Title"],["description","A name given to the resource"],["elementTextContainer",["elementText",{"elementTextId":"12101"},["text","Actividad antióxidante de alcaloides."]]]],["element",{"elementId":"43"},["name","Identifier"],["description","An unambiguous reference to the resource within a given context"],["elementTextContainer",["elementText",{"elementTextId":"12102"},["text","http://www.scielo.org.mx/pdf/rfm/v34n4/v34n4a5.pdf"]]]],["element",{"elementId":"41"},["name","Description"],["description","An account of the resource"],["elementTextContainer",["elementText",{"elementTextId":"12103"},["text","Los alcaloides son compuestos químicos que poseen propiedades farmacológicas a concentraciones bajas. En este estudio se evaluó la actividad antioxidante en fracciones de alcaloides libres hexánicos, libres metanólicos, liberados metanólicos y de erisodina, obtenidas de semillas de Erythrina americana Miller, mediante el método del radical estable 2,2-difenil-1-picrilhidrazilo (DPPH); dicha reacción se midió por espectroscopía UV-Visible. La fracción de alcaloides liberados presentó mayor actividad antioxidante (0.1593 mg mL-1 ± 0.0305), aunque las tres fracciones crudas inhibieron más de 50 % de la concentración del DPPH. Se aisló erisodina pura a partir de la fracción de alcaloides liberados por medio de cromatografía en columna con los eluyentes diclorometano:metanol en distintas polaridades; dicho alcaloide se identifi có a través de cromatografía en capa fi na y RMN1H. Erisodina causó una fuerte inhibición sobre el DPPH, comparable a la del ácido ascórbico (CI50 = 0.0212 mg mL-1 ± 0.008 y CI50 = 0.0068 mg mL-1 ± 0.0008, respectivamente). Erisodina a 0.5 mg mL-1 inhibió hasta 94 % del DPPH"]]]],["element",{"elementId":"38"},["name","Coverage"],["description","The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant"],["elementTextContainer",["elementText",{"elementTextId":"12104"},["text","2011-11-10"]]]],["element",{"elementId":"45"},["name","Publisher"],["description","An entity responsible for making the resource available"],["elementTextContainer",["elementText",{"elementTextId":"12105"},["text","SciELO México"]]]]]]],["tagContainer",["tag",{"tagId":"4574"},["name","alcaloides"]],["tag",{"tagId":"4572"},["name","antirradical"]],["tag",{"tagId":"4573"},["name","erisodina"]],["tag",{"tagId":"4571"},["name","Erythrina americana"]],["tag",{"tagId":"4575"},["name","radical libre."]]]]