<?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>S0187-893X2019000100021</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Determinação do grau de saponificação de óleo residual: uma experiência no ensino de Química sob as perspectivas CTSA e Química Verde]]></article-title>
<article-title xml:lang="en"><![CDATA[Determination of residual oil saponification: an experience in chemistry education under the stse and green chemical perspectives]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mello]]></surname>
<given-names><![CDATA[Flávia de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gomes]]></surname>
<given-names><![CDATA[Sandra Inês Adams Angnes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Giusti]]></surname>
<given-names><![CDATA[Edneia Durli]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sandri]]></surname>
<given-names><![CDATA[Marilei Casturina Mendes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Robaert]]></surname>
<given-names><![CDATA[Samuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidade Regional de Blumenau  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Federal do Paraná  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Federal do Paraná  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Instituto Federal Farroupilha  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>30</volume>
<numero>1</numero>
<fpage>21</fpage>
<lpage>30</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-893X2019000100021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-893X2019000100021&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-893X2019000100021&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo Neste artigo relata-se um trabalho de ensino, articulado à pesquisa e à extensão sob a perspectiva Ciência, Tecnologia, Sociedade e Ambiente (CTSA) e Química Verde (QV). Por meio do projeto de extensão Fábrica Escola de Detergentes realizou-se a arrecadação de óleo residual de fritura a fim de produzir um sabão ecológico. Posteriormente, realizou-se a otimização da formulação do sabão por meio da investigação da verdura química empregando métricas holísticas e de massa. Todas essas etapas estiveram associadas a atividades de ensino, tais como aulas teórico-experimentais, minicursos e oficinas para alunos e comunidade local. A investigação da verdura química da formulação inicial do sabão mostrou o emprego de hidróxido de sódio em excesso (169,77%), sendo que na melhoria da formulação foi possível ajustar a quantidade de reagente para a incorporação total dos átomos dos reagentes ao produto, como prevê o segundo princípio da QV. No tocante ao ensino, o projeto permitiu aos licenciandos tomar contato com um problema socioambiental e buscar soluções mediante a investigação científica. Com isso, o projeto mostrou grande potencialidade para trabalhar aspectos conceituais na formação de professores e na Educação Básica, na perspectiva CTSA e da QV, ao trazer uma problemática socioambiental de grande impacto, como o descarte inadequado de óleo residual.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This article reports on a teaching project, linked to research and extension under the Science-Technology-Society-Environment (STSE) and Green Chemistry (GC) perspectives. Through the extension project &#8220;Fábrica Escola de Detergentes&#8221; (Detergent Factory at the school), residual frying oil was collected in order to produce ecological soap. After that, the optimization of soap formulation was carried out through the investigation of chemical greenness using holistic and mass metrics. All the stages were connected to teaching activities, such as theoretical-experimental classes, minicourses and workshops for students and locals. The investigation of the chemical greenness in the initial soap formulation demonstrated the excessive use of sodium hydroxide (169.7%), and in the formulation improvement it was possible to adjust the amount of reagent for the total incorporation of the reagent atoms into the product, as described in the second GC principle. Regarding the teaching, this project allowed the undergraduate students to get in touch with a socio-environmental issue and seek solutions through scientific research. In this way, the project showed great potential to work conceptual aspects in the teachers&#8217; formation and in the basic education, under the STSE and GC perspectives, by bringing a great impact socio-environmental issue like the inadequate waste oil disposal.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Química Verde]]></kwd>
<kwd lng="pt"><![CDATA[CTSA]]></kwd>
<kwd lng="pt"><![CDATA[Otimização de sabões]]></kwd>
<kwd lng="pt"><![CDATA[Índice de Saponificação]]></kwd>
<kwd lng="pt"><![CDATA[Ensino-Pesquisa-Extensão]]></kwd>
<kwd lng="en"><![CDATA[Green Chemistry]]></kwd>
<kwd lng="en"><![CDATA[STSE]]></kwd>
<kwd lng="en"><![CDATA[Soap Optimization]]></kwd>
<kwd lng="en"><![CDATA[Saponification Value]]></kwd>
<kwd lng="en"><![CDATA[Teaching-Research-Extension]]></kwd>
</kwd-group>
</article-meta>
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