<?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>S2223-48612021000200103</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[TRATAMIENTO QUÍMICO DE RESIDUOS DE CAMARÓN PARA LA OBTENCIÓN DE QUITINA]]></article-title>
<article-title xml:lang="en"><![CDATA[WASTES SHRIMP CHEMICAL TREATMENT FOR CHITIN OBTAINING]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Curbelo Hernández]]></surname>
<given-names><![CDATA[Caridad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palacio Dubois]]></surname>
<given-names><![CDATA[Yadira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de La Habana &#8220;José Antonio Echeverría&#8221;, CUJAE Facultad de Ingeniería Química ]]></institution>
<addr-line><![CDATA[Marianao La Habana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<volume>48</volume>
<numero>2</numero>
<fpage>103</fpage>
<lpage>116</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612021000200103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612021000200103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612021000200103&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: Las plantas procesadoras de crustáceos pueden ser usadas para obtener compuestos químicamente definidos que tienen aplicaciones en diferentes industrias. Los residuos poseen componentes valiosos como proteínas, minerales y quitina, que de no ser aprovechados serían contaminantes ambientales.  Objetivo: Evaluar el tratamiento químico de desechos de camarón Litopenaeus vannamei para la obtención de quitina.  Materiales y Métodos: Los residuos de camarón (cabeza y exoesqueleto) fueron acondicionados y sometidos a las etapas de despigmentación con etanol y ozono; desmineralización con HCl (1 y 5 mol/L); y desproteinización con NaOH (1 mol/L) para la obtención de quitina a escala de laboratorio. Se caracterizó la materia prima y se determinó el rendimiento en cada etapa.  Resultados y Discusión: Las etapas de despigmentación y desmineralización de los residuos de camarón influyen en las etapas posteriores para la obtención de quitina, por lo que se seleccionó al exoesqueleto para continuar el proceso. El ozono resultó el agente decolorante con mejores resultados. En la etapa de desproteinización no fue posible trabajar a la temperatura adecuada para su objetivo, lo cual afectará la desacetilación de la quitina obtenida.  Conclusiones: Las diferencias en la composición química de los residuos de camarón estudiados se encuentran en el contenido de cenizas, proteínas y pigmentos, lo que influye en las etapas de obtención de quitina, resultando que las condiciones de operación en las etapas de despigmentación y desmineralización permitieron seleccionar al exoesqueleto para la obtención de quitina. La temperatura en la etapa de desproteinización no garantizó la eficacia de esta etapa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Wastes from crustacean processing plants can be used to obtain chemically defined compounds that have applications in different industries. This wastes have valuable components such as proteins, minerals and chitin, which if not exploited would become environmental pollutants.  Objective: To evaluate chemical treatment of shrimp wastes Litopenaeus vannamei for chitin obtaining.  Materials and Methods: Shrimp wastes, head and exoskeleton, were conditioned and subsequently subjected to depigmentation with ethanol and ozone; demineralization with HCl (1 and 5 mol/L); and deproteinization with NaOH (1 mol/L) to obtain chitin at laboratory scale. Raw material was characterized and yield in each stage was determined.  Results and Discussion: Stages of depigmentation and demineralization of Litopenaeus vannamei shrimp wastes influence the subsequent stages to obtain chitin, so exoskeleton was selected to continue the process. Ozone was the bleaching agent with best results. In deproteinization stage, it was not possible to work at the appropriate temperature to meet its objective, which will be affecting the deacetylation stage of chitin.  Conclusions: The differences in chemical composition of the evaluated shrimp wastes influence the obtaining chitin and chitosan stages f. As a result, operating conditions in depigmentation and demineralization stages allowed selecting the exoskeleton to obtain chitin and chitosan. Temperature in deproteinization stage did not guarantee this stage efficacy.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[ozono]]></kwd>
<kwd lng="es"><![CDATA[quitina]]></kwd>
<kwd lng="es"><![CDATA[residuos de camarón.]]></kwd>
<kwd lng="en"><![CDATA[ozone]]></kwd>
<kwd lng="en"><![CDATA[chitin]]></kwd>
<kwd lng="en"><![CDATA[shrimp wastes.]]></kwd>
</kwd-group>
</article-meta>
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