<?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>0187-893X</journal-id>
<journal-title><![CDATA[Educación química]]></journal-title>
<abbrev-journal-title><![CDATA[Educ. quím]]></abbrev-journal-title>
<issn>0187-893X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Química]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-893X2024000400127</article-id>
<article-id pub-id-type="doi">10.22201/fq.18708404e.2024.4.88146</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Investigative and collaborative experimental activities using simple purification of curcuminoids by column chromatography]]></article-title>
<article-title xml:lang="es"><![CDATA[Actividades experimentales investigativas y colaborativas mediante purificación simple de curcuminoides mediante cromatografía en columna]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde]]></surname>
<given-names><![CDATA[Alessandra Leda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Abreu]]></surname>
<given-names><![CDATA[Lucas Silva]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ribeiro]]></surname>
<given-names><![CDATA[Carlos Magno Rocha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Federal Fluminense Instituto de Química ]]></institution>
<addr-line><![CDATA[Valonguinho ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade Federal Fluminense Instituto de Química ]]></institution>
<addr-line><![CDATA[Valonguinho ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade Federal Fluminense Instituto de Química Departamento de Química Orgânica]]></institution>
<addr-line><![CDATA[Valonguinho ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>35</volume>
<numero>4</numero>
<fpage>127</fpage>
<lpage>138</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-893X2024000400127&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-893X2024000400127&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-893X2024000400127&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This work describes the use of turmeric in the teaching concepts and laboratory techniques of organic chemistry to students in introductory classes of licentiate, bachelor&#8217;s and industrial chemistry courses, as well as to pharmacy and chemical engineering students at Universidade Federal Fluminense, in Niterói/RJ/Brazil. Considering investigative and collaborative activities and Vygotsky theory, the discussed concepts were everyday natural products, green chemistry, purification and separation of organic substances, molecular interactions, organic compound extraction techniques, and thin-layer and column chromatography. The activities were applied for four 3-hour classes for 31 students in 7 introductory organic chemistry laboratory classes for Chemistry and for 43 students in 4 experimental organic chemistry classes for Pharmacy and Chemical Engineering courses, in the years 2022-23. The teaching-learning process methodology involved 4 moments/classes: a) discussions about organic chemistry; b) discontinuous extraction of turmeric and thin-layer chromatography; c) column chromatography; and d) discussions about results and the learning process. After the sequence of classes, it was possible to observe the students&#8217; motivation with the ease of separating curcuminoids and the understanding of the relationship between theoretical concepts and practice, as well as the understanding of the importance of low waste production.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este trabajo describe el uso de la cúrcuma en la enseñanza de conceptos y técnicas de laboratorio de química orgánica a estudiantes de clases introductorias de cursos de licenciatura en química, grado en química y química industrial, así como a estudiantes de farmacia e ingeniería química de la Universidade Federal Fluminense, en Niterói/RJ/Brasil. Considerando las actividades de investigación y colaboración con Vygotsky, los conceptos discutidos fueron productos naturales cotidianos, química verde, purificación y separación de sustancias orgánicas, interacciones moleculares, técnicas de extracción de compuestos orgánicos, cromatografía en capa fina y en columna. El trabajo se aplicó durante cuatro clases de 3 horas de duración a 31 estudiantes de 7 clases de Introducción al Laboratorio de Química Orgánica de la carrera de Química y 43 estudiantes de 4 clases de Química Orgánica Experimental de la carrera de Farmacia e Ingeniería Química, en los años 2022 y 2023. La metodología del proceso de enseñanza-aprendizaje involucró 4 momentos/clases: a) discusiones sobre química orgánica; b) extracción discontinua de cúrcuma y cromatografía en capa fina; c) cromatografía en columna; y d) discusiones sobre resultados y proceso de aprendizaje. Luego de la secuencia de clases, se pudo observar la motivación de los estudiantes con la facilidad para separar los curcuminoides y la comprensión de la relación entre conceptos teóricos y práctica, así como la comprensión de la importancia de la baja producción de residuos.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[química orgánica]]></kwd>
<kwd lng="es"><![CDATA[enseñanza experimental]]></kwd>
<kwd lng="es"><![CDATA[aprendizaje]]></kwd>
<kwd lng="es"><![CDATA[productos naturales]]></kwd>
<kwd lng="es"><![CDATA[clases introductorias de laboratorio]]></kwd>
<kwd lng="es"><![CDATA[interdisciplinaridad]]></kwd>
<kwd lng="en"><![CDATA[organic chemistry]]></kwd>
<kwd lng="en"><![CDATA[experimental teaching]]></kwd>
<kwd lng="en"><![CDATA[learning]]></kwd>
<kwd lng="en"><![CDATA[natural products]]></kwd>
<kwd lng="en"><![CDATA[introductory laboratory classes]]></kwd>
<kwd lng="en"><![CDATA[interdisciplinarity]]></kwd>
</kwd-group>
</article-meta>
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