<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0034-7744</journal-id>
<journal-title><![CDATA[Revista de Biología Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. biol. trop]]></abbrev-journal-title>
<issn>0034-7744</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-77442021000200507</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v69i2.41626</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actividad antioxidante en genotipos de Theobroma spp. (Malvaceae) en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Antioxidant activity in genotypes of Theobroma spp. (Malvaceae) in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Avendaño-Arrazate]]></surname>
<given-names><![CDATA[Carlos-Hugo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Rojas]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Palestina]]></surname>
<given-names><![CDATA[Cesar-Uriel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Bolaños]]></surname>
<given-names><![CDATA[Misael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caballero-Pérez]]></surname>
<given-names><![CDATA[Juan-Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Báez-Alonso]]></surname>
<given-names><![CDATA[Moisés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ariza-Flores]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadena-Iñiguez]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Chiapas]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Chapingo Departamento de Fitotecnia ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma del estado de Hidalgo  ]]></institution>
<addr-line><![CDATA[ Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias  ]]></institution>
<addr-line><![CDATA[ Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Postgrado de Innovación en Manejo de Recursos Naturales Colegio de Posgraduados  ]]></institution>
<addr-line><![CDATA[ San Luis Potosí]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>69</volume>
<numero>2</numero>
<fpage>507</fpage>
<lpage>523</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442021000200507&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442021000200507&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442021000200507&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  The organoleptic qualities of aromatic species and their derived products are directly related to some characteristics of flavor, color and nutritional value and depend largely on their genetic origin and content of secondary metabolites.  Objective:  The antioxidant activity of different genotypes of Theobroma spp. from Mexico was evaluated in order to distinguish promising qualities for genetic improvement, and to differentiate phylogenetic traits, considering biochemical variables.  Methods:  The amount of phenols, flavonoids and antioxidant activity was determined by ABTS and DDPH, in addition to the content of anthocyanins, theobromine and caffeine in four species of Theobroma L., and 50 genotypes derived from T. cacao. The results were analyzed using an analysis of variance, means test, principal component analysis and cladistic analysis.  Results:  There are highly significant differences between genotypes. The phenol content ranged from 7.5-85 mg g-1; flavonoids 6.57-69.6 mg g-1, antioxidant activity by ABTS of 17.3-86.1 and by DDPH of 40.0-53.3; anthocyanin content of 0.01-3, caffeine of 1.8-6.7-and theobromine of 2.9-9.8 mg g-1. Principal component and cladistic analysis helped explain the variation found and distinguish evolutionary characters and phylogenetic brotherhoods. The variation in content of phenols, flavonoids, antioxidant activity, anthocyanins, theobromine and caffeine was mainly due to the degree of domestication, while for the group of genotypes derived from T. cacao (forastero, trinitario and criollo) it was the origin of the seeds.  Conclusions:  The degree of domestication influences the content of phenols and antioxidant capacity. The results suggest that the evaluated variables can help to form criteria for genetic improvement in the complex derived from T. cacao oriented to the selection of higher phenol content and greater antioxidant activity.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Resumen  Introducción:  Las cualidades organolépticas de las especies aromáticas y sus productos derivados se relacionan directamente con algunas características del sabor, color y valor nutricional y dependen en gran medida de su origen genético y contenido de metabolitos secundarios.  Objetivo:  Se evaluó la actividad antioxidante de diferentes genotipos de Theobroma spp. de México, con el fin de distinguir cualidades promisorias para el mejoramiento genético, y diferenciar rasgos filogenéticos, considerando variables bioquímicas.  Métodos:  Se determinó la cantidad de fenoles, flavonoides y actividad antioxidante mediante ABTS y DDPH, además de contenido de antocianinas, teobromina y cafeína en cuatro especies de Theobroma L., y 50 genotipos derivados de T. cacao.  Resultados:  Los resultados fueron analizados mediante un análisis de varianza, prueba de medias, análisis de componentes principales y análisis cladístico. Existen diferencias altamente significativas entre genotipos. El contenido de fenoles varió de 7.5-85 mg g-1; flavonoides 6.57-69.6-mg g-1, actividad antioxidante por ABTS de 17.3-86.1 y por DDPH de 40.0-53.3; el contenido de antocianinas de 0.01-3, cafeína de 1.8-6.7 y teobromina de 2.9-9.8 mg g-1. El análisis de componentes principales y cladístico ayudó a explicar la variación encontrada y distinguir caracteres evolutivos y hermandades filogenéticas. La variación en contenido de fenoles, flavonoides, actividad antioxidante, antocianinas, teobromina y cafeína estuvo dada principalmente por el grado de domesticación, mientras que para el grupo de genotipos derivados de T. cacao (forastero, trinitario y criollo) fue el origen de las semillas.  Conclusión:  El grado de domesticación influye en el contenido de fenoles y actividad antioxidante. Los resultados sugieren que las variables evaluadas pueden ayudar a formar criterios para el mejoramiento genético en el complejo derivado de T. cacao orientado a la selección de mayor contenido de fenoles y mayor actividad antioxidante.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[phenols]]></kwd>
<kwd lng="en"><![CDATA[theobromine]]></kwd>
<kwd lng="en"><![CDATA[forastero]]></kwd>
<kwd lng="en"><![CDATA[trinitario]]></kwd>
<kwd lng="en"><![CDATA[criollo]]></kwd>
<kwd lng="en"><![CDATA[fenoles]]></kwd>
<kwd lng="en"><![CDATA[teobromina]]></kwd>
<kwd lng="en"><![CDATA[forastero]]></kwd>
<kwd lng="en"><![CDATA[trinitario]]></kwd>
<kwd lng="en"><![CDATA[criollo]]></kwd>
</kwd-group>
</article-meta>
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