<?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>2310-3469</journal-id>
<journal-title><![CDATA[Revista Cubana de Ciencias Forestales]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cubana ciencias forestales]]></abbrev-journal-title>
<issn>2310-3469</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Pinar del Río Hermanos Saíz Montes de Oca]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2310-34692020000100154</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Uso potencial de Leucaena leucocephala Lam. (leucaena) presente en sistemas agroforestales de Pinar del Río]]></article-title>
<article-title xml:lang="pt"><![CDATA[Uso potencial de Leucaena leucocephala Lam. (leucaena) presente em sistemas agroflorestais em Pinar del Río]]></article-title>
<article-title xml:lang="en"><![CDATA[Potential use of Leucaena leucocephala Lam (leucaena) present in agroforestry systems of Pinar del Río]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dago Dueñas]]></surname>
<given-names><![CDATA[Yusniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Milian Domínguez]]></surname>
<given-names><![CDATA[Jorge Candelario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calzadilla Reyes]]></surname>
<given-names><![CDATA[Katiuska]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Redonet Miranda]]></surname>
<given-names><![CDATA[María de los Ángeles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López Quintana]]></surname>
<given-names><![CDATA[Yosbel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Guanche]]></surname>
<given-names><![CDATA[Lisandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Pinar del Río "Hermanos Saíz Montes de Oca"  ]]></institution>
<addr-line><![CDATA[Pinar del Río ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2020</year>
</pub-date>
<volume>8</volume>
<numero>1</numero>
<fpage>154</fpage>
<lpage>162</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2310-34692020000100154&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2310-34692020000100154&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2310-34692020000100154&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El presente trabajo se desarrolló en la Universidad de Pinar del Río, durante los meses de enero a marzo de 2018, con el objetivo de determinar la presencia o no de metabolitos secundarios en el follaje y corteza de Leucaena leucocephala con potencial uso en los agroecosistemas. Las muestras de las plantas fueron tomadas en un agroecosistemas de Pinar del Río para después ser trasladadas al laboratorio de química de la universidad donde fueron procesadas. El método de trabajo utilizado para la determinación de los metabolitos secundarios fue el tamizaje fotoquímico donde se realiza una extracción sucesiva con solventes de polaridad creciente, logrando la obtención de los extractos. Después de realizado el tamizaje se pudo inferir que en el follaje y corteza de esta especie existe la presencia de sustancias tales como flavonoides, alcaloides, carbohidratos reductores, taninos lo cual comprueba el potencial uso de esta planta para la nutrición animal y la salud.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O presente trabalho foi desenvolvido na Universidade de Pinar del Rio "Hermanos Saíz Montes de Oca" durante os meses de janeiro a março de 2018, com o objetivo de determinar a presença ou não de metabólitos secundários na folhagem e casca de Leucaena leucocephala com potencial uso nos agroecossistemas. As amostras vegetais foram coletadas em um agroecossistema de Pinar del Rio e depois transferidas para o laboratório de química da universidade onde foram processadas. O método de trabalho utilizado para a determinação dos metabólitos secundários foi a triagem fotoquímica, onde foi realizada uma extração sucessiva com solventes de polaridade crescente, obtendo-se os extratos. Após a triagem foi possível inferir que na folhagem e casca desta espécie há a presença de substâncias como flavonóides, alcaloides, carboidratos redutores, taninos que comprovam o uso potencial desta planta para a nutrição e saúde animal.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The present work was developed at the University of Pinar del Rio "Hermanos Saíz Montes de Oca" during the months of January to March 2018, with the objective of determining the presence or not of secondary metabolites in the foliage and bark of Leucaena leucocephalawith potential use in agroecosystems. The plant samples were taken in an agroecosystem of Pinar del Rio and then transferred to the chemistry laboratory of the university where they were processed. The working method used for the determination of the secondary metabolites was photochemical screening where a successive extraction with solvents of increasing polarity was performed, obtaining the extracts. After the screening was done it was possible to infer that in the foliage and bark of this species there is the presence of substances such as flavonoids, alkaloids, reducing carbohydrates, tannins which proves the potential use of this plant for animal nutrition and health.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[follaje y corteza]]></kwd>
<kwd lng="es"><![CDATA[Leucaena leucocephala]]></kwd>
<kwd lng="es"><![CDATA[metabolitos secundarios]]></kwd>
<kwd lng="es"><![CDATA[extractos.]]></kwd>
<kwd lng="pt"><![CDATA[folhagem e casca]]></kwd>
<kwd lng="pt"><![CDATA[Leucaena leucocephala]]></kwd>
<kwd lng="pt"><![CDATA[metabólitos secundários]]></kwd>
<kwd lng="pt"><![CDATA[extratos.]]></kwd>
<kwd lng="en"><![CDATA[foliage and bark of Leucaena leucocephala]]></kwd>
<kwd lng="en"><![CDATA[secondary metabolite]]></kwd>
<kwd lng="en"><![CDATA[extraction.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ARDOINO]]></surname>
<given-names><![CDATA[S.M.]]></given-names>
</name>
<name>
<surname><![CDATA[BOERIS]]></surname>
<given-names><![CDATA[M.A.]]></given-names>
</name>
<name>
<surname><![CDATA[TOSO]]></surname>
<given-names><![CDATA[R.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caracterización fitoquímica de Prosopis flexuosa var. flexuosa (algarrobo) y Prosopis flexuosa var. depressa (alpataco), plantas con acción farmacológica.]]></article-title>
<source><![CDATA[CienciaVeterinaria]]></source>
<year>2017</year>
<volume>15</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>115-25</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[DAGLIA]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polyphenols as antimicrobial agents]]></article-title>
<source><![CDATA[Current Opinion in Biotechnology]]></source>
<year>2012</year>
<volume>23</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>174-81</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[DELGADO]]></surname>
<given-names><![CDATA[D.C.]]></given-names>
</name>
<name>
<surname><![CDATA[HERA]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[CAIRO]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[ORTA]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Samaneasaman, a multi-purpose tree with potentialities as alternative feed for animals of productive interest]]></article-title>
<source><![CDATA[Cuban Journal of Agricultural Science]]></source>
<year>2014</year>
<volume>48</volume>
<page-range>205-12</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[DOMÍNGUEZ]]></surname>
<given-names><![CDATA[J.C.M.]]></given-names>
</name>
<name>
<surname><![CDATA[MONROY]]></surname>
<given-names><![CDATA[O.I.]]></given-names>
</name>
<name>
<surname><![CDATA[HERNÁNDEZ]]></surname>
<given-names><![CDATA[H.V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Caracterización fitoquímica de SamaneaSamanJacqMerr. (algarrobo)]]></article-title>
<source><![CDATA[Revista Cubana de Ciencias Forestales]]></source>
<year>2017</year>
<volume>5</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>49-61</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ESCALANTE]]></surname>
<given-names><![CDATA[E.E.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Use and performance of leucaena (Leucaenaleucocephala) in Venezuelan animal production systems]]></article-title>
<source><![CDATA[Tropical Grasslands-Forrajes Tropicales]]></source>
<year>2019</year>
<volume>7</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>407-9</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[HERVÁS]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[FRUTOS]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[MANTECÓN]]></surname>
<given-names><![CDATA[Á.R.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Protección de suplementos proteicos frente a la degradación ruminal: utilización de taninos]]></article-title>
<source><![CDATA[CSIC]]></source>
<year>2001</year>
</nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[NOGUEIRA]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[SPENGLER]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
</person-group>
<source><![CDATA[Guía para el tamizaje fotoquímico]]></source>
<year>1994</year>
<publisher-name><![CDATA[MINSAP]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="book">
<collab>NORMA TAPPI 211</collab>
<source><![CDATA[Technical association of the pulp and paper industry. TAPPI test methods]]></source>
<year>1998</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[TAPPI]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[ORTEGA]]></surname>
<given-names><![CDATA[J.R.]]></given-names>
</name>
<name>
<surname><![CDATA[DOMÍNGUEZ MARTÍNEZ]]></surname>
<given-names><![CDATA[V.G.]]></given-names>
</name>
<name>
<surname><![CDATA[VALENCIA]]></surname>
<given-names><![CDATA[M.G.]]></given-names>
</name>
<name>
<surname><![CDATA[BULÁS MENDOZA]]></surname>
<given-names><![CDATA[M. del R.]]></given-names>
</name>
<name>
<surname><![CDATA[FARÍAS RAMÓN]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluación de la actividad antifúngica in vitrode extractos etanólicos de "sangregado"(CrotondracoSchltdl.&amp;Cham.)]]></article-title>
<source><![CDATA[RESEARCHGATE]]></source>
<year>2018</year>
<page-range>1-6</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[RAICO HUACCHA]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilización de alcaloides cuaternarios de la benzofenantridina y protopina en alimentación de lechones destetados, cruzados y su efecto sobre el desempeño productivo]]></article-title>
<source><![CDATA[Universidad Nacional de Cajamarca]]></source>
<year>2018</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
