<?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>1012-2966</journal-id>
<journal-title><![CDATA[Gaceta Médica Boliviana]]></journal-title>
<abbrev-journal-title><![CDATA[Gac Med Bol]]></abbrev-journal-title>
<issn>1012-2966</issn>
<publisher>
<publisher-name><![CDATA[Facultad de Medicina de la Universidad Mayor de San Simón]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1012-29662024000100014</article-id>
<article-id pub-id-type="doi">10.47993/gmb.v47i1.688</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Actividad antibacteriana in vitro del extracto y aceite esencial de hojas de Muña]]></article-title>
<article-title xml:lang="en"><![CDATA[In vitro antibacterial activity of Muña leaves extract and essential oil]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Velarde Negrete]]></surname>
<given-names><![CDATA[Jans]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escobar Hinojosa]]></surname>
<given-names><![CDATA[Max]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moya Pucho]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinoza Antezana]]></surname>
<given-names><![CDATA[Magaly]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Veizaga Orellana]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Balderrama Canaza]]></surname>
<given-names><![CDATA[Karen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Mayor de San Simón Facultad de Ciencias Farmacéuticas y Bioquímicas ]]></institution>
<addr-line><![CDATA[Cochabamba ]]></addr-line>
<country>Bolivia</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>47</volume>
<numero>1</numero>
<fpage>14</fpage>
<lpage>19</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_arttext&amp;pid=S1012-29662024000100014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_abstract&amp;pid=S1012-29662024000100014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.bo/scielo.php?script=sci_pdf&amp;pid=S1012-29662024000100014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivo:  comparar la actividad antibacteriana in vitro del extracto y del aceite esencial de hojas de muña (Minthostachys mollis) frente a dos géneros y cinco cepas bacterianas patógenas.  Materiales y métodos: estudio experimental, enfoque cuantitativo, método modificado de pozos en agar de Kirby-Bauer utilizado para medir la actividad antibacteriana.  Resultados: el rendimiento del aceite esencial fue del 1,19%. El aceite esencial al 100% fue más efectivo para inhibir el crecimiento del S. aureus, Proteus spp, K. pneumoniae, E coli y P. aeruginosa con medias de halos de inhibición de 27 mm, 25 mm, 22 mm, 21 mm y 20 mm mayores al del extracto y la doxiciclina. A su vez, inhibió el crecimiento del E. faecalis y Enterobacter spp, con mayor efectividad en comparación al extracto, doxiciclina y ciprofloxacina. Por otro lado, se observó diferencias significativas de medias de inhibición en al menos 2 de los grupos analizados con un p &lt;0,05 y 95% de confianza, del ANOVA de un factor de Tukey y de Kruskal-Wallis.  Conclusiones: el Proteus spp, S. aureus, K. pneumoniae, E. coli y P. aeruginosa fueron inhibidas por el aceite esencial de muña al 100% con mayor efectividad que por el extracto y la doxiciclina. De igual modo, en comparación con el extracto y los antimicrobianos, el aceite fue el único que frenó eficazmente el crecimiento del Enterobacter spp. y E. faecalis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objective: to compare the in vitro antibacterial activity of the extract and essential oil of pineapple (Minthostachys mollis) leaves against two genera and five pathogenic bacterial strains.  Materials and methods: experimental study, quantitative approach, modified Kirby-Bauer agar well method used to measure antibacterial activity.  Results: the essential oil yield was 1,19%. The 100% essential oil was more effective in inhibiting the growth of S. aureus, Proteus spp, K. pneumoniae, E coli and P. aeruginosa with mean inhibition halos of 27 mm, 25 mm, 22 mm, 21 mm and 20 mm greater than that of the extract and doxycycline. In turn, it inhibited the growth of E. faecalis and Enterobacter spp, with greater effectiveness compared to the extract, doxycycline and ciprofloxacin. On the other hand, significant differences in inhibition means were observed in at least 2 of the groups analyzed with a p &lt;0,05 and 95% confidence, from Tukey's one-factor ANOVA and Kruskal-Wallis.  Conclusions: Proteus spp, S. aureus, K. pneumoniae, E. coli and P. aeruginosa were inhibited by 100% essential oil of pineapple more effectively than by the extract and doxycycline. Similarly, compared to the extract and antimicrobials, the oil was the only one that effectively inhibited the growth of Enterobacter spp. and E. faecalis.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[aceite esencial]]></kwd>
<kwd lng="es"><![CDATA[actividad antibacteriana]]></kwd>
<kwd lng="es"><![CDATA[Kirby-Bauer]]></kwd>
<kwd lng="es"><![CDATA[Minthostachys mollis]]></kwd>
<kwd lng="en"><![CDATA[essential oil]]></kwd>
<kwd lng="en"><![CDATA[antibacterial activity]]></kwd>
<kwd lng="en"><![CDATA[Kirby-Bauer]]></kwd>
<kwd lng="en"><![CDATA[Minthostachys mollis]]></kwd>
</kwd-group>
</article-meta>
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<article-title xml:lang=""><![CDATA[Efecto inhibitorio in vitro del aceite esencial de las hojas de Minthostachys mollis (muña) sobre colonias de Enterococcus faecalis ATCC 29212]]></article-title>
<source><![CDATA[Rev. Simiykita]]></source>
<year>2015</year>
<volume>1</volume>
<numero>1</numero>
<issue>1</issue>
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<label>20</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borda]]></surname>
<given-names><![CDATA[D.]]></given-names>
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<source><![CDATA[Efecto antibacteriano del aceite esencial de Minthostachys mollis (Muña) comparado con el aceite esencial de Rosmarinus officinalis (Romero) en concentración 50 y 100% sobre cepas de Enterococcus faecalis, Arequipa]]></source>
<year>2018</year>
<publisher-loc><![CDATA[Arequipa, Peru ]]></publisher-loc>
<publisher-name><![CDATA[Universidad Alas Peruanas]]></publisher-name>
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</article>
