<?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>1390-8596</journal-id>
<journal-title><![CDATA[LA GRANJA. Revista de Ciencias de la Vida ]]></journal-title>
<abbrev-journal-title><![CDATA[La Granja]]></abbrev-journal-title>
<issn>1390-8596</issn>
<publisher>
<publisher-name><![CDATA[Universidad Politécnica Salesiana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1390-85962024000200100</article-id>
<article-id pub-id-type="doi">10.17163/lgr.n40.2024.07</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la composición química del extracto alcohólico de Gynoxys cuicochensis Cuatrec: identificación de metabolitos y exploración de sus propiedades farmacológicas]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of the chemical composition of the alcoholic extract of Gynoxys cuicochensis Cuatrec: identification of metabolites and exploration of their pharmacological properties]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Malagón]]></surname>
<given-names><![CDATA[Omar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cartuche]]></surname>
<given-names><![CDATA[Patricio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gilardoni]]></surname>
<given-names><![CDATA[Gianluca]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cumbicus]]></surname>
<given-names><![CDATA[Nixon]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montaño]]></surname>
<given-names><![CDATA[Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,niversidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Técnica Particular de Loja  ]]></institution>
<addr-line><![CDATA[Loja ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2024</year>
</pub-date>
<volume>40</volume>
<numero>2</numero>
<fpage>100</fpage>
<lpage>112</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S1390-85962024000200100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S1390-85962024000200100&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S1390-85962024000200100&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  La especie Gynoxys cuicochensis Cuatrec., es una Asterácea que habita el páramo de Fierro Urco de la provincia de Loja. Si bien no es utilizada dentro de la medicina tradicional, posee un alto valor paisajístico por su llamativa inflorescencia amarilla. Con el objetivo de conocer su composición química y posibles propiedades farmacológicas, se efectuó una caracterización fitoquímica del extracto etanólico de la planta, obtenido mediante maceración estática por el lapso de 3 días para la primera filtración, y un día para la segunda y tercera filtración. La clorofila fue separada utilizando una fase sólida de resina Diaon Hp 20, la misma que fue empacada en embudos de decantación, y una fase líquida de EtOH:H 2 O en gradiente de concentración desde 6:4 hasta 9:1 para la elución. El extracto desclorofilado se liofilizó y posteriormente se fraccionó utilizando cromatografía en columna por gravedad. Las fracciones obtenidas fueron purificadas mediante microcolumna y cromatografía preparativa. Para elucidar la estructura química de las moléculas, se recurrió a la espectrometría de resonancia magnética nuclear y espectrometría de masas de ionización por electrospray. Como resultado, se aislaron dos metabolitos: el primero es un flavonoide glicosilado conocido como Nicotiflorina, mientras que el segundo es un derivado fenólico, denominado ácido 1,3-di-O-trans-feruloilquinico que aún no cuenta con una descripción farmacológica precisa. Este descubrimiento representa un hallazgo interesante y único para esta especie en particular, lo que sugiere un posible uso medicinal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Gynoxys cuicochensis Cuatrec., a member of the Asteraceae family, inhabits the Fierro Urco moor in the province of Loja. Despite not being used in traditional medicine, it possesses significant landscape value due to its striking yellow inflorescence. For investigating its chemical composition and potential pharmacological properties, a phytochemical characterization of the plant&#8217;s ethanolic extract was conducted. The extract was obtained through static maceration for three days for the initial filtration, followed by one day for the second and third filtrations. Chlorophyll was separated using Diaion HP-20 resin as a solid phase packed in separation funnels, and an ethanol:water liquid phase with a concentration gradient ranging from 6:4 to 9:1 for elution. The dechlorophyllized extract was then freeze-dried and fractionated using gravity column chromatography. The obtained fractions were further purified through microcolumn and preparative chromatography. To elucidate the chemical structure of the molecules, nuclear magnetic resonance spectroscopy and electrospray ionization mass spectrometry were employed. Two metabolites were isolated for this study. The first one is a known glycosylated flavonoid called Nicotiflorin, while the second one is a phenolic derivative named 1,3-di-O-trans-feruloylquinic acid, which lacks a precise pharmacological description. This discovery represents an interesting and unique finding for this species, suggesting its potential medicinal use.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Gynoxys cuicochensis Cuatrec]]></kwd>
<kwd lng="es"><![CDATA[RMN]]></kwd>
<kwd lng="es"><![CDATA[ESI]]></kwd>
<kwd lng="es"><![CDATA[flavonoide]]></kwd>
<kwd lng="es"><![CDATA[nicotiflorina]]></kwd>
<kwd lng="es"><![CDATA[ácido feruloilquinico.]]></kwd>
<kwd lng="en"><![CDATA[Gynoxys cuicochensis Cuatrec]]></kwd>
<kwd lng="en"><![CDATA[NMR]]></kwd>
<kwd lng="en"><![CDATA[ESI]]></kwd>
<kwd lng="en"><![CDATA[flavonoid]]></kwd>
<kwd lng="en"><![CDATA[nicotiflorin]]></kwd>
<kwd lng="en"><![CDATA[feruloylquinic acid.]]></kwd>
</kwd-group>
</article-meta>
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