<?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>0121-750X</journal-id>
<journal-title><![CDATA[Ingeniería]]></journal-title>
<abbrev-journal-title><![CDATA[ing.]]></abbrev-journal-title>
<issn>0121-750X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Distrital Francisco José de Caldas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0121-750X2023000200209</article-id>
<article-id pub-id-type="doi">10.14483/23448393.19067</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de protocolos de síntesis de nanopartículas de cobre u óxidos de cobre]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of Protocols for the Synthesis of Copper or Copper Oxides Nanoparticles]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Acevedo-León]]></surname>
<given-names><![CDATA[Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ossa-Orozco]]></surname>
<given-names><![CDATA[Claudia Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-López]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Antioquia Grupo de Investigación de Biomateriales ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ingeniería Programa de Bioingeniería]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Antioquia Facultad de Ingeniería Programa de Bioingeniería]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2023</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0121-750X2023000200209&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0121-750X2023000200209&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0121-750X2023000200209&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Contexto:  Las nanopartículas de cobre u óxidos de cobre son materiales de interés para la agricultura por sus múltiples propiedades, entre ellas su actividad antimicrobiana, que resulta útil en el control biológico de plagas. Diversos autores han reportado que las nanopartículas con tamaño inferior a 50 nm tienen mayor efecto antimicrobiano. De acuerdo con esto, este estudio tuvo como objetivo comparar diferentes protocolos de síntesis de nanopartículas de cobre u óxidos de cobre, con el propósito de obtener NPs de tamaños adecuados para su futura evaluación en el control biológico de especies que afectan comúnmente los cultivos en Colombia.  Método:  Se evaluaron cinco protocolos de síntesis, cuatro de ellos clasificados como métodos de síntesis química verde y el otro como síntesis biológica. Las nanopartículas obtenidas fueron caracterizadas mediante espectroscopía UV-Vis, DLS, TEM, FTIR, DRX, SEM y EDS.  Resultados:  El protocolo 3, que utiliza sulfato de cobre pentahidratado como sal precursora, ácido ascórbico como agente reductor y almidón como estabilizante, resultó ser el más adecuado, pues con él se obtuvieron nanopartículas esféricas de cobre metálico con un tamaño promedio de 4,5 nm.  Conclusiones:  Fue posible comparar las metodologías de obtención de nanopartículas de cobre y óxidos de cobre, analizar el efecto de las condiciones de síntesis en sus características y finalmente obtener un protocolo para sintetizar nanopartículas de cobre con un tamaño adecuado para un potencial uso en aplicaciones de control biológico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Context:  Copper or copper oxide nanoparticles are materials of interest in the field of agriculture due to their multiple properties, including their antimicrobial activity, which is useful in the biological control of pests. Several authors have reported that nanoparticles smaller than 50 nm have a greater antimicrobial effect. Accordingly, this study aimed to compare different synthesis protocols, with the purpose of obtaining copper or copper oxide nanoparticles with adequate size for their subsequent evaluation in the biological control of species that commonly affect crops in Colombia.  Method:  Five synthesis protocols were evaluated, four of them classified as green chemical synthesis methods, and the other as biological synthesis. The obtained nanoparticles were characterized via UV-Vis spectroscopy, DLS, TEM, FTIR, XRD, SEM, and EDS.  Results:  Protocol 3, which uses copper sulfate pentahydrate as precursor salt, ascorbic acid as reducing agent, and starch as stabilizer, proved to be the most suitable, as spherical metallic copper nanoparticles with a size of 4,5 nm were obtained with it.  Conclusions: It was possible to compare methodologies for copper and copper oxide nanoparticles production, analyze the effect of synthesis conditions on their characteristics, and finally obtain a protocol to synthesize copper nanoparticles with an adequate size for potential use in biological control applications.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[nanopartículas]]></kwd>
<kwd lng="es"><![CDATA[cobre]]></kwd>
<kwd lng="es"><![CDATA[óxidos de cobre]]></kwd>
<kwd lng="es"><![CDATA[síntesis química]]></kwd>
<kwd lng="es"><![CDATA[síntesis biológica.]]></kwd>
<kwd lng="en"><![CDATA[nanoparticles]]></kwd>
<kwd lng="en"><![CDATA[copper]]></kwd>
<kwd lng="en"><![CDATA[copper oxides]]></kwd>
<kwd lng="en"><![CDATA[chemical synthesis]]></kwd>
<kwd lng="en"><![CDATA[biological synthesis.]]></kwd>
</kwd-group>
</article-meta>
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