<?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>0122-5383</journal-id>
<journal-title><![CDATA[CT&F - Ciencia, Tecnología y Futuro]]></journal-title>
<abbrev-journal-title><![CDATA[C.T.F Cienc. Tecnol. Futuro]]></abbrev-journal-title>
<issn>0122-5383</issn>
<publisher>
<publisher-name><![CDATA[Instituto Colombiano del Petróleo (ICP) - ECOPETROL S.A.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-53831998000100007</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[BIOTRANSFORMATION AND REMOVAL OF SULFUR FROM DIBENZOTHIOPHENE USING IMPROVED BIOCATALYTIC METHODS]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[LAROTTA]]></surname>
<given-names><![CDATA[C. E]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MORA]]></surname>
<given-names><![CDATA[A. L]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MADERO]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MOGOLLÓN]]></surname>
<given-names><![CDATA[L. I]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Ecopetrol - Instituto Colombiano del Petróleo  ]]></institution>
<addr-line><![CDATA[Bucaramanga Santander]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>01</month>
<year>1998</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>01</month>
<year>1998</year>
</pub-date>
<volume>1</volume>
<numero>4</numero>
<fpage>85</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-53831998000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-53831998000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-53831998000100007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Three methods for the removal of sulfurfrom dibenzothiophene were evaluated using biocatalytic processes. The methods were a microbial, an enzymatic and a combined one that involves a previous enzymatic oxidation followed by microbial degradation. The byconversion was evaluated over the molecular dibenzothiophene model, obtaining higher byconversion percentages through the combined method. The microorganisms used in this study correspond to several Colombian indigenous strains isolated by direct methods from natural sources, and using a standard strain as positive control. All strains have shown sulfur removal capacity, and organic solvent tolerance. The enzyme used was a hemoprotein with peroxidase activity, Cytochrome C, obtained from equine heart.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Tres métodos de remoción de azufre a partir de dibenzotiofeno fueron evaluados empleando procesos biocatalíticos tales como byconversion microbiológica, enzimática y un método combinado que reúne la preoxidación via enzimática y la posterior degradación microbiana. La biodegradación fue evaluada sobre el modelo molecular dibenzotiofeno, encontrándose un mayor porcentaje de byconversion empleando el método combinado con respecto a los otros dos métodos. Los microorganismos evaluados corresponden a varias cepas colombianas aisladas por métodos directos de fuentes naturales y una cepa patrón como control positivo. Todas las cepas han presentado capacidad biodesulfurizadora y tolerancia a medios orgánicos. La enzima empleada corresponde a una hemoproteina con actividad peroxidasa, Citocromo C de corazón equino.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[dibenzothiophene]]></kwd>
<kwd lng="en"><![CDATA[sulfur-removal]]></kwd>
<kwd lng="en"><![CDATA[hemoproteins]]></kwd>
<kwd lng="en"><![CDATA[peroxidase]]></kwd>
<kwd lng="en"><![CDATA[cytochrome C]]></kwd>
<kwd lng="en"><![CDATA[biodesulfurization]]></kwd>
<kwd lng="es"><![CDATA[dibenzotiofeno]]></kwd>
<kwd lng="es"><![CDATA[extracción-azufre]]></kwd>
<kwd lng="es"><![CDATA[hemoproteínas]]></kwd>
<kwd lng="es"><![CDATA[peroxidasa]]></kwd>
<kwd lng="es"><![CDATA[citocromo C]]></kwd>
<kwd lng="es"><![CDATA[biodesulfurización]]></kwd>
</kwd-group>
</article-meta>
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