<?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>1659-1321</journal-id>
<journal-title><![CDATA[Agronomía Mesoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Mesoam]]></abbrev-journal-title>
<issn>1659-1321</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1659-13212022000400008</article-id>
<article-id pub-id-type="doi">10.15517/am.v33iespecial.51499</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Observaciones fenológicas, características del aceite e isoterma de equilibrio de las semillas de Myroxylon peruiferum (Fabaceae)]]></article-title>
<article-title xml:lang="en"><![CDATA[Phenological observations, oil characteristics and equilibrium isotherm of Myroxylon peruiferum seeds (Fabaceae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-Sandí]]></surname>
<given-names><![CDATA[Diego]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solano-Quesada]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-Ramírez]]></surname>
<given-names><![CDATA[Ester]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monge-Vargas]]></surname>
<given-names><![CDATA[Andrés Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Irías-Mata]]></surname>
<given-names><![CDATA[Andrea]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barboza-Barquero]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad de Costa Rica  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2022</year>
</pub-date>
<volume>33</volume>
<numero>spe1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1659-13212022000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1659-13212022000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1659-13212022000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Introducción. La información fenológica sobre Myroxylon peruiferum en Costa Rica es escasa. Además, se desconocen las características del aceite y la isoterma de equilibrio de las semillas. El conocimiento generado en este campo permitirá realizar un adecuado manejo de las semillas; y generar opciones de prospección del aceite. Objetivos. (i) Documentar un evento de floración y fructificación de un árbol de M. peruiferum. (ii) Determinar las características del aceite del fruto y la semilla. (iii) Generar una isoterma de absorción/des-absorción de agua. Materiales y métodos. De marzo a mayo de 2021, se documentó la floración y fructificación de un árbol de M. peruiferum en Montes de Oca, San José, Costa Rica. Los frutos maduros se recolectaron entre junio y julio. Se caracterizó el contenido de aceite de los frutos y de las semillas por separado. Se elaboró una isoterma de absorción/des-absorción de agua, con la que se probó el ajuste de la ecuación de Cromarty. Resultados. El periodo de floración, fructificación y dispersión duró cinco meses. Estas fenofases ocurrieron simultáneamente. El ácido oleico fue el principal ácido graso. Hubo una correlación significativa entre los porcentajes de ácidos grasos del aceite del fruto y el de la semilla, y entre los contenidos de ácidos grasos saturados, monoinsaturados y poliinsaturados. El aceite es amarillo, medianamente intenso y luminoso. Al incrementar la humedad relativa, el contenido de humedad de las semillas aumentó. La relación lineal entre los valores reales y los obtenidos mediante la ecuación de Cromarty fue de R2= 0,93. Conclusión. La recolección de frutos maduros puede realizarse entre marzo y agosto, y destinarlos a estudios de germinación, propagación y prospección del aceite. Ya establecida la relación entre la humedad relativa y contenido de humedad de la semilla, se pueden desarrollar estudios sobre almacenamiento de semillas y pérdida de viabilidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Introduction. Phenological information on Myroxylon peruiferum in Costa Rica is scarce. In addition, the characteristics of the oil and the equilibrium isotherm are unknown. The knowledge generated in this field will allow proper seed management and generate oil prospecting options. Objectives. (i) To document a flowering and fruiting event of a single M. peruiferum tree. (ii) To determine the characteristics of the fruit and seed oil. (iii) To generate a water absorption/de-absorption isotherm. Materials and methods. From March to May 2021, the flowering and fruiting of M. peruiferum tree was documented in Montes de Oca, San Jose, Costa Rica. Mature fruits were collected between June and July. The oil content of fruits and seeds was characterized separately. A water absorption/de-absorption isotherm was elaborated, with which the fit of the Cromarty equation was tested. Results. The flowering, fruiting, and dispersal period lasted five months. These phenophases occurred simultaneously. Oleic acid was the main fatty acid. There was a significant correlation between the percentages of fatty acid in the fruit and seed oil, and between the contents of saturated, monounsaturated, and polyunsaturated fatty acids. The oil is yellow, moderately intense, and luminous. As relative humidity increased, seed moisture content also increased. The linear relationship between the actual values and those obtained using the Cromarty equation was R2= 0.93. Conclusion. Mature fruit can be harvested between March and August, and be used for germination, propagation and oil prospecting studies. Once the relationship between relative humidity and seed moisture content is established, studies on seed storage and viability loss can be developed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[floración]]></kwd>
<kwd lng="es"><![CDATA[fructificación]]></kwd>
<kwd lng="es"><![CDATA[contenido de aceite]]></kwd>
<kwd lng="es"><![CDATA[contenido de humedad]]></kwd>
<kwd lng="es"><![CDATA[ecuación de Cromarty]]></kwd>
<kwd lng="en"><![CDATA[flowering]]></kwd>
<kwd lng="en"><![CDATA[fruiting]]></kwd>
<kwd lng="en"><![CDATA[oil content]]></kwd>
<kwd lng="en"><![CDATA[moisture content]]></kwd>
<kwd lng="en"><![CDATA[Cromarty equation]]></kwd>
</kwd-group>
</article-meta>
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