<?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>1870-249X</journal-id>
<journal-title><![CDATA[Journal of the Mexican Chemical Society]]></journal-title>
<abbrev-journal-title><![CDATA[J. Mex. Chem. Soc]]></abbrev-journal-title>
<issn>1870-249X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Química de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-249X2016000300148</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Potential Antimicrobial and Chemical Composition of Essential Oils from Piper caldense Tissues]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rocha]]></surname>
<given-names><![CDATA[Dayane Silva]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[Janete Magali da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Navarro]]></surname>
<given-names><![CDATA[Daniela Maria do Amaral Ferraz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camara]]></surname>
<given-names><![CDATA[Claúdio Augusto Gomes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lira]]></surname>
<given-names><![CDATA[Camila Soledade de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[Clécio Souza]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Rural Federal University of Pernambuco Department of Chemistry ]]></institution>
<addr-line><![CDATA[Recife Pe]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Federal University of Pernambuco Department of Antibiotics ]]></institution>
<addr-line><![CDATA[Recife Pe]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Federal University of Pernambuco Department of Fundamental Chemistry ]]></institution>
<addr-line><![CDATA[Recife Pe]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2016</year>
</pub-date>
<volume>60</volume>
<numero>3</numero>
<fpage>148</fpage>
<lpage>151</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2016000300148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2016000300148&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2016000300148&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: The essential oils from leaves, stems and roots of Piper caldense were analyzed by GC-MS. The antibacterial potential of the oils was evaluated against gram-negative bacteria and gram-positive bacteria. The major chemical constituents that were identified from various parts of this plant were &#945;-cardinal, &#945;-muurolol, tujopsan-2-&#946;-ol and &#948;-cadiene in the leaves, valencene, pentadecane, elina-3,7-11-dieno &#945;-terpineol in the roots and terpine-4-ol, &#945;-terpineol, &#945;-cadinol 2-&#946;-ol in the stems. Tissue oils showed antibacterial activity against the bacteria tested except for Enterococcus faecalis. This is the first report of the biological activity and chemical composition essential oil of P. caldense.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Los aceites esenciales de hojas, tallos y raíces de Piper Caldense se analizaron mediante CG-EM. El potencial antibacteriano de los aceites se evaluó frente a bacterias gram-negativas y bacterias gram-positivas. Los principales componentes químicos que fueron identificados de varias partes de esta planta fueron a-cardenal, &#945;-muurolol, tujopsan-2-&#946;-ol y &#948;-cadiene en las hojas, valenceno, pentadecano, elina-3,7-11-dieno &#945;-terpineol en las raíces y terpina-4-ol, &#945;-terpineol, &#945;-cadinol 2-&#946;-ol en los tallos. Aceites del tejido mostraron actividad antibacteriana contra las bacterias analizadas excepto por Enterococcus faecalis. Este es el primer informe de la actividad biológica y la composición química del aceite esencial de P. caldense.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Piper caldense]]></kwd>
<kwd lng="en"><![CDATA[Piperaceae, essential oil]]></kwd>
<kwd lng="en"><![CDATA[antimicrobial activity]]></kwd>
<kwd lng="es"><![CDATA[Piper caldense]]></kwd>
<kwd lng="es"><![CDATA[Piperaceae, aceite esencial]]></kwd>
<kwd lng="es"><![CDATA[actividad antimicrobiana]]></kwd>
</kwd-group>
</article-meta>
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