<?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>2007-9028</journal-id>
<journal-title><![CDATA[Ecosistemas y recursos agropecuarios]]></journal-title>
<abbrev-journal-title><![CDATA[Ecosistemas y recur. agropecuarios]]></abbrev-journal-title>
<issn>2007-9028</issn>
<publisher>
<publisher-name><![CDATA[Universidad Juárez Autónoma de Tabasco, Dirección de Investigación y Posgrado]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-90282021000300001</article-id>
<article-id pub-id-type="doi">10.19136/era.a8n3.2943</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actividad nematicida de extractos foliares de cuatro especies de Piper contra Caenorhabditis elegans]]></article-title>
<article-title xml:lang="en"><![CDATA[Nematicidal activity of four Piper species foliar extracts against Caenorhabditis elegans]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carmona-Hernández]]></surname>
<given-names><![CDATA[Oscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martínez-Hernández]]></surname>
<given-names><![CDATA[María de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernández]]></surname>
<given-names><![CDATA[María del Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Molina-Torres]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Chávez]]></surname>
<given-names><![CDATA[Enrique]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrientos-Salcedo]]></surname>
<given-names><![CDATA[Carolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lozada-García]]></surname>
<given-names><![CDATA[José Armando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ciencias Agrícolas ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Veracruzana Facultad de Biología Xalapa ]]></institution>
<addr-line><![CDATA[Xalapa Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,CINVESTAV-IPN Departamento de Biotecnología y Bioquímica ]]></institution>
<addr-line><![CDATA[Irapuato Guanajuato]]></addr-line>
<country>México</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Veracruzana Facultad de Bioanálisis Veracruz ]]></institution>
<addr-line><![CDATA[Veracruz Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>8</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-90282021000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-90282021000300001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-90282021000300001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las especies del género Piper han mostrado potencial como biocidas naturales en diferentes organismos, lo cual es atribuible a la diversidad de metabolitos secundarios que sintetizan. Por lo cual, el objetivo de esta investigación fue evaluar el efecto nematicida contra Caenorhabditis elegans de los extractos hidroacohólicos, etanólicos y metanólicos de cuatro especies del género Piper. Los resultados mostraron que el extracto de P. aduncum fue el que presentó mayor actividad con una concentración letal media (CL50) estimada en 0.650 mg mL-1. Se determinaron perfiles cromatográficos por HPTLC y en GC-EIMS de los extractos de mayor actividad. Los metabolitos identificados fueron alcaloides, flavonoides, terpenos, esteroles, cumarinas y saponinas. En la GC-EIMS se identificaron 67 compuestos potenciales en los extractos etanólicos. Se concluye que el extracto etanólico de Piper aduncum presentó mayor actividad nematicida (CL50 de 0.650 mg mL-1) y el de mayor número de compuestos identificados preliminarmente.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Piper spices haven showed a great biological potential as natural biocide, in different organism. This is attributed to the diversity bioactive metabolites present in tissue. In this research we evaluated the nematicidal activity of different foliar extracts from Piper spices against Caenorhabditis elegans. We evaluated the nematicide activity of the hydroalcoholic, methanolic and ethanolic extracts. Chromatography prolife by HTPLC and GC-EIMS of the extracts with mayor activity was obtained. The ethanolic extract from Piper aduncum displayed higher activity as lethal concentration 50 (LC50) estimated at 0.650 mg mL-1. The bioactive metabolites identified were alkaloids, flavonoids, terpenoids, steroids and coumarins. The GC-EIMS determinate 67 compounds in the higher activity extracts. Concluded the P. aduncum ethanolic extract has the higher activity and the mayor compounds diversity.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Bioactividad]]></kwd>
<kwd lng="es"><![CDATA[CG-EIMS]]></kwd>
<kwd lng="es"><![CDATA[CL50]]></kwd>
<kwd lng="es"><![CDATA[HPTLC]]></kwd>
<kwd lng="es"><![CDATA[Probit]]></kwd>
<kwd lng="en"><![CDATA[Bioactivity]]></kwd>
<kwd lng="en"><![CDATA[CG-EIMS]]></kwd>
<kwd lng="en"><![CDATA[HPTLC]]></kwd>
<kwd lng="en"><![CDATA[LC50]]></kwd>
<kwd lng="en"><![CDATA[Probit]]></kwd>
</kwd-group>
</article-meta>
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