<?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>2223-4861</journal-id>
<journal-title><![CDATA[Centro Azúcar]]></journal-title>
<abbrev-journal-title><![CDATA[cen. az.]]></abbrev-journal-title>
<issn>2223-4861</issn>
<publisher>
<publisher-name><![CDATA[Editorial Feijóo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2223-48612020000300095</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[VALORIZACIÓN DE LA LIGNINA EN EL CONCEPTO DE BIORREFINERÍA (I)]]></article-title>
<article-title xml:lang="en"><![CDATA[LIGNIN VALORIZATION IN BIOREFINERY CONCEPT (I)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Villanueva]]></surname>
<given-names><![CDATA[Aixa R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guirola Céspedes]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[de Armas Martínez]]></surname>
<given-names><![CDATA[Ana Celia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Albernas Carvajal]]></surname>
<given-names><![CDATA[Yailet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva Ramos]]></surname>
<given-names><![CDATA[Gretel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Humanidades Departamento de Licenciatura en Comunicación Social]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central &#8220;Marta Abreu&#8221; de Las Villas Facultad de Química y Farmacia Departamento Ingeniería Química]]></institution>
<addr-line><![CDATA[Santa Clara Villa Clara]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2020</year>
</pub-date>
<volume>47</volume>
<numero>3</numero>
<fpage>95</fpage>
<lpage>105</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612020000300095&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612020000300095&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612020000300095&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  El uso de la lignina como fuente de biocombustibles, químicos y alimentos en las biorrefinerías del futuro es un tópico de interés científico creciente. La lignina es un polímero natural heterogéneo, de carácter aromático, constituyente de las plantas, usualmente asociado a la celulosa y la hemicelulosa. La multifuncionalidad química de la misma le imparte propiedades muy variadas que permiten un apreciable número de transformaciones químicas. La hidrólisis del bagazo de caña de azúcar en el concepto de biorrefinería produce corrientes ricas en lignina que aún no han sido valorizadas.  Objetivo:  Proponer un esquema de producción de lignina que podría ser integrado en el concepto de biorrefinería, a partir de la determinación de las posibles aplicaciones de la misma.  Materiales y Métodos:  Se realiza una búsqueda (briefing) que brinda datos de utilidad para el desarrollo del proceso de obtención de la lignina, partiendo de esto se propone un esquema de producción y se determinan las características principales del mismo.  Resultados y Discusión:  Las aplicaciones de la lignina residual del proceso organosolv que se están desarrollando son muy variadas: formulación de espumas de poliuretano, relleno en películas de ácido poliláctico, producción de fibras de carbono, como agentes antioxidantes y antimicrobianos y en alimentos. Las etapas del proceso de producción incluyen operaciones con reacción química y operaciones de separación.  Conclusiones: El proceso propuesto se justifica con las aplicaciones de la lignina y puede ser integrado a la biorrefinería propuesta en trabajos anteriores.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  The use of lignin as biofuels, chemicals and food source in future biorefineries is a growing topic in scientific interest. Lignin is an aromatic heterogeneous natural polymer, present in plants, usually associated with cellulose and hemicellulose. Its chemical multifunctionality imparts very varied properties that allow an appreciable number of chemical transformations. Hydrolysis of sugarcane bagasse in the biorefinery concept produces lignin-rich currents that have not yet been recovered.  Objective: To propose a lignin production scheme that could be integrated into the biorefinery concept, based on its possible applications determination.  Materials and Methods: A search (briefing) that provides useful data for the development lignin obtaining process is carried out, based on this, a production scheme is proposed and its main characteristics are determined.  Results and Discussion:  The applications of residual lignin from organosolv process that are being developed are very varied: formulation of polyurethane foams, filler in polylactic acid films, carbon fibers production, as antioxidant and antimicrobial agents and in food. Production process stages include chemical reaction and separation operations.  Conclusions:  The proposed process is justified with lignin applications and can be integrated into the biorefinery proposed in previous works.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bagazo]]></kwd>
<kwd lng="es"><![CDATA[biorrefinería]]></kwd>
<kwd lng="es"><![CDATA[lignina]]></kwd>
<kwd lng="en"><![CDATA[bagasse]]></kwd>
<kwd lng="en"><![CDATA[biorefinery]]></kwd>
<kwd lng="en"><![CDATA[lignin]]></kwd>
</kwd-group>
</article-meta>
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