<?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>2007-8064</journal-id>
<journal-title><![CDATA[Entreciencias: diálogos en la sociedad del conocimiento]]></journal-title>
<abbrev-journal-title><![CDATA[Entreciencias: diálogos soc. conoc.]]></abbrev-journal-title>
<issn>2007-8064</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Escuela Nacional de Estudios Superiores]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-80642024000100104</article-id>
<article-id pub-id-type="doi">10.22201/enesl.20078064e.2024.26.87733</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Study of biodiesel production from weed species found in crops from Aguascalientes, Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[Estudio de la producción de biodiésel a partir de especies arvenses presentes en cultivos de Aguascalientes, México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dena Aguilar]]></surname>
<given-names><![CDATA[José Alonso]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Díaz Ponce]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Frausto Reyes]]></surname>
<given-names><![CDATA[Claudio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva Mejía]]></surname>
<given-names><![CDATA[Francisco]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Zacarías Moreno]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológico Nacional de México Campus Pabellón de Arteaga ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigaciones en Óptica, A.C.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2024</year>
</pub-date>
<volume>12</volume>
<numero>26</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-80642024000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-80642024000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-80642024000100104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Purpose: To analyze, at a laboratory level, the biodiesel production yield by transesterification of the vegetable oil extracted from weed species growing in local crop areas in Aguascalientes, Mexico.  Methodological Design:  The study evaluated the biodiesel production yield by transesterification of the vegetable oil from the weed species Bidens ferulifolia (Jacq.) DC., Tithonia tubaeformis (Jacq.) Cass., and Bidens sambucifolia (Cav.). Their vegetable oil is extracted through an L9(34) design using alcohols and alkanes as solvents. Transesterification is conducted under an L4(23) design, employing NaOH and methanol as a catalyst and excess alcohol, respectively. Raman Spectroscopy and Fourier Transform Infrared Spectroscopy (FTIR) were used to characterize the biodiesel samples obtained.  Results:  In the FTIR and Raman spectra of the obtained biodiesel, peaks were observed at wavenumbers 1740 cm-1 and 1450 cm-1, respectively, corresponding to the C=O group of the conventional ester present in the fatty acid methyl esters of the biodiesel. This confirms that biodiesel was successfully produced from the studied weed species with production yields ranging between 10.3 and 15.3%.  Research limitations:  This is one of the first studies to provide information on the biodiesel production capacity of the selected weed species.  Findings:  Biodiesel was successfully produced through transesterifying vegetable oil extracted from the selected weed species. Further research is warranted to enhance biodiesel yields.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Objetivo:  Analizar a nivel laboratorio el rendimiento de producción de biodiésel por transesterificación del aceite vegetal extraído de especies arvenses crecientes en terrenos de cultivos locales en Aguascalientes, México.  Diseño Metodológico:  El estudio se centró en evaluar el rendimiento de producción de biodiésel por transesterificación del aceite vegetal extraído de las especies arvenses Bidens ferulifolia (Jacq.) DC., Tithonia tubaeformis (Jacq.) Cass. y Bidens sambucifolia (Cav.). La extracción del aceite se realizó mediante un diseño L9(34) empleando alcoholes y alcanos como solventes. La transesterificación se efectuó bajo un diseño L4(23) empleando NaOH y metanol como catalizador y alcohol en exceso, respectivamente. Las muestras del biodiésel obtenido fueron caracterizadas por espectroscopia Raman y espectroscopia infrarroja por transformada de Fourier (FTIR).  Resultados:  En los espectros de FTIR y de Raman del biodiésel obtenido se observaron picos a un numero de onda de 1740 cm-1 y de 1450 cm-1, respectivamente, los cuales corresponden al grupo C=O del éster convencional presente en los ésteres metílicos de ácidos grasos del biodiésel. Lo anterior, confirma que se logró producir biodiésel de las especies arvenses de estudio con rendimientos de producción entre 10.3 y 15.3%.  Limitaciones de la investigación:  Este es uno de los primeros estudios que aporta información sobre la capacidad de producción de biodiésel de las especies arvenses seleccionadas.  Hallazgos:  Se logró producir biodiésel a partir de la transesterificación del aceite vegetal extraído de las especies arvenses seleccionadas. No obstante, se justifica la realización de futuras investigaciones para mejorar los rendimientos de producción de biodiésel.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Biodiesel]]></kwd>
<kwd lng="en"><![CDATA[weed species]]></kwd>
<kwd lng="en"><![CDATA[Bidens ferulifolia (Jacq.) DC.]]></kwd>
<kwd lng="en"><![CDATA[Tithonia tubaeformis (Jacq.) Cass.]]></kwd>
<kwd lng="en"><![CDATA[Bidens sambucifolia (Cav.)]]></kwd>
<kwd lng="es"><![CDATA[Biodiésel]]></kwd>
<kwd lng="es"><![CDATA[especies arvenses]]></kwd>
<kwd lng="es"><![CDATA[Bidens ferulifolia (Jacq.) DC.]]></kwd>
<kwd lng="es"><![CDATA[Tithonia tubaeformis (Jacq.) Cass.]]></kwd>
<kwd lng="es"><![CDATA[Bidens sambucifolia (Cav.)]]></kwd>
</kwd-group>
</article-meta>
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