<?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>1390-7697</journal-id>
<journal-title><![CDATA[Revista Científica y Tecnológica UPSE (RCTU)]]></journal-title>
<abbrev-journal-title><![CDATA[RCTU]]></abbrev-journal-title>
<issn>1390-7697</issn>
<publisher>
<publisher-name><![CDATA[Universidad Estatal Península de Santa Elena]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1390-76972024000100009</article-id>
<article-id pub-id-type="doi">10.26423/rctu.v11i1.758</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actividad antioxidante y composición del Clinopodium tomentosum (Kunth) Govaerts (Lamiaceae) en extracción húmeda y seca]]></article-title>
<article-title xml:lang="en"><![CDATA[Antioxidant activity and composition of linopodium tomentosum (Kunth) Govaerts (Lamiaceae) in Wet and Dry Extraction]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Enriquez Estrella]]></surname>
<given-names><![CDATA[Miguel Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bonifaz Brito]]></surname>
<given-names><![CDATA[Lilian Alexandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lara Montoya]]></surname>
<given-names><![CDATA[George Michael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Estatal Amazónica  ]]></institution>
<addr-line><![CDATA[Puyo ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Escuela de Educación Básica Manuela Cañizares  ]]></institution>
<addr-line><![CDATA[Machala ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Instituto Superior Tecnológico Ismael Pérez Pazmiño  ]]></institution>
<addr-line><![CDATA[Machala ]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2024</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>9</fpage>
<lpage>16</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_arttext&amp;pid=S1390-76972024000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_abstract&amp;pid=S1390-76972024000100009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.senescyt.gob.ec/scielo.php?script=sci_pdf&amp;pid=S1390-76972024000100009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En la antigüedad, se emplearon diversas especies de plantas en la medicina tradicional debido a sus propiedades medicinales, las cuales se aprovecharon en una variedad de procesos tanto en el ámbito alimenticio como farmacéutico. El objetivo de este estudio fue caracterizar los componentes bioactivos, específicamente antioxidantes y polifenoles, presentes en la especie Clinopodium tomentosum en muestras tanto secas como húmedas. Se utilizó un método de extracción de principios activos asistido por ultrasonido, seguido de la identificación de dichos componentes mediante las técnicas de FRAP (Ferric Reducing Antioxidant Power) y Folin Ciocalteau. Los resultados revelan diferencias significativas en los valores obtenidos entre las muestras secas y húmedas. En particular, se observaron concentraciones de 1,49 mg/L de polifenoles y 1,27 mg/L de antioxidantes en las muestras secas, en contraste con las extracciones en estado húmedo que mostraron concentraciones de 1,39 mg/L de polifenoles y 1,04 mg/L de antioxidantes. Estos hallazgos destacan la influencia del estado de la muestra en la extracción de los componentes bioactivos esto permitió la identificación de sus componentes bioactivos, lo que sugiere un potencial prometedor para investigaciones futuras.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In ancient times, various plant species were used in traditional medicine due to their medicinal properties, which were utilized in a variety of processes in both the food and pharmaceutical fields. The objective of this study was to characterize the bioactive components, specifically antioxidants and polyphenols, present in the species Clinopodium tomentosum in both dry and wet samples. An ultrasound-assisted extraction method was used to obtain the active principles, followed by the identification of these components using the FRAP (Ferric Reducing Antioxidant Power) and Folin-Ciocalteu techniques. The results revealed significant differences in the values obtained between the dry and wet samples. Specifically, concentrations of 1.49 mg/L of polyphenols and 1.27 mg/L of antioxidants were observed in the dry samples, in contrast to the wet extractions, which showed concentrations of 1.39 mg/L of polyphenols and 1.04 mg/L of antioxidants. These findings highlight the influence of the sample state on the extraction of bioactive components, allowing for the identification of their bioactive constituents. This suggests a promising potential for future research.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Bioactivos]]></kwd>
<kwd lng="es"><![CDATA[extractos]]></kwd>
<kwd lng="es"><![CDATA[fitoquímicos]]></kwd>
<kwd lng="es"><![CDATA[Folin-Ciocalteu]]></kwd>
<kwd lng="es"><![CDATA[FRAP]]></kwd>
<kwd lng="en"><![CDATA[Bioactives]]></kwd>
<kwd lng="en"><![CDATA[Extracts]]></kwd>
<kwd lng="en"><![CDATA[Folin-Ciocalteu]]></kwd>
<kwd lng="en"><![CDATA[FRAP]]></kwd>
<kwd lng="en"><![CDATA[phytochemicals.]]></kwd>
</kwd-group>
</article-meta>
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