<?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>S2223-48612021000300011</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[DIGESTIÓN ANAEROBIA DE SUERO DE QUESO UTILIZANDO INÓCULO DE ESTIÉRCOL PORCINO A DIFERENTES RELACIONES INÓCULO-SUSTRATO]]></article-title>
<article-title xml:lang="en"><![CDATA[ANAEROBIC DIGESTION OF CHEESE WHEY USING SWINE MANURE ANAEROBIC SLUDGE AT DIFFERENT INOCULUM-SUBSTRATE RATIOS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Enrique González-Herrera]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Beltrán]]></surname>
<given-names><![CDATA[Yaima]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López González]]></surname>
<given-names><![CDATA[Lisbet Mailín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez Hernández]]></surname>
<given-names><![CDATA[Janet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Sancti Spíritus &#8220;José Martí Pérez&#8221; (UNISS) Centro de Estudios de Energía y Procesos Industriales (CEEPI) ]]></institution>
<addr-line><![CDATA[ Sancti Spíritus]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Sancti Spíritus &#8220;José Martí Pérez&#8221; (UNISS) Facultad de Ciencias Agropecuarias ]]></institution>
<addr-line><![CDATA[ Sancti Spíritus]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>48</volume>
<numero>3</numero>
<fpage>11</fpage>
<lpage>20</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2223-48612021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2223-48612021000300011&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2223-48612021000300011&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: La digestión anaerobia del suero de queso es una tecnología muy atractiva y ampliamente utilizada, aunque se necesitan estrategias que contrarresten la rápida acidificación del suero, que provoca la caída del pH y posteriores fallas.  Objetivo: Evaluar la digestión anaerobia del suero de queso utilizando lodo anaerobio de estiércol porcino como inóculo, así como la influencia de diferentes relaciones de inóculo-sustrato y la cinética de reacción en cada caso.  Materiales y Métodos: La caracterización del inóculo y suero se realizó en los laboratorios de la Universidad de Sancti Spíritus &#8220;José Martí Pérez&#8221; (UNISS) según métodos estándares; se utilizó ensayo de forma discontinua en reactores de 2 L, para la determinación del rendimiento de metano a tres relaciones inóculo-sustrato (1:1, 2:1 y 3:1).  Resultados y Discusión: Se demostró que es posible degradar este suero con el inóculo de estiércol porcino en las primeras 24-48 horas, aunque no se alcanza el potencial de metano contenido, dada la necesaria adaptación previa del inóculo y la inhibición que implica la acidez del sustrato. Los reactores con proporción inóculo sustrato 3:1 manifestaron el mayor rendimiento de metano (191 LNCH4kgSV-1). El análisis cinético reveló que el modelo Hill fue el que más se ajustó, aunque el ajuste de todos los modelos experimentados permite predecir el potencial de metano.  Conclusiones: Este trabajo demuestra que es posible utilizar lodo anaerobio de estiércol porcino para el arranque de biorreactores que traten suero de queso, y se puede utilizar el modelo de Hill para predecir la formación de metano.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: Anaerobic digestion of cheese whey is a very attractive and widely used technology, although strategies are needed to counteract the rapid whey acidification, which causes a pH dismiss and subsequent failures.  Objective: To evaluate cheese whey anaerobic digestion using anaerobic pig manure sludge as inoculum, as well as the influence of different inoculum-substrate relationships and the reaction kinetics in each case.  Materials and Methods: Inoculum and serum characterization was carried out in the UNISS laboratories according to standard methods; 2 L batch reactors were used to determine methane yield at three inoculum-substrate ratios (1:1, 2:1 y 3:1).  Results and Discussion: It is possible to degrade this serum with the pig manure inoculum in the first 24-48 hours, although the potential of contained methane is not reached, due to the necessary prior inoculum adaptation and the inhibition implied by the substrate acidity. Reactors with a 3:1 substrate- inoculum ratio showed the highest methane yield (191 LNCH4kgVS-1). Kinetic analysis revealed that the Hill model was the best fit, although the fit of all the experimented models allows predicting the methane yield.  Conclusions: This work demonstrates that it is possible to use anaerobic pig manure sludge to start bioreactors that treat cheese whey, and the Hill model can be used to predict methane formation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[digestión anaerobia]]></kwd>
<kwd lng="es"><![CDATA[inóculo de estiércol porcino]]></kwd>
<kwd lng="es"><![CDATA[suero de queso]]></kwd>
<kwd lng="en"><![CDATA[anaerobic digestion]]></kwd>
<kwd lng="en"><![CDATA[pig manure inoculum]]></kwd>
<kwd lng="en"><![CDATA[cheese whey]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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