<?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>0123-3475</journal-id>
<journal-title><![CDATA[Revista Colombiana de Biotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colomb. biotecnol]]></abbrev-journal-title>
<issn>0123-3475</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biotecnología, Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-34752019000100128</article-id>
<article-id pub-id-type="doi">10.15446/rev.colomb.biote.v21n1.53219</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Adaptación del método acreman para la limpieza de plantas en lemna minuta (araceae: lemnoideae)]]></article-title>
<article-title xml:lang="en"><![CDATA[Adaptation of the acreman method for cleaning plants in lemna minuta (araceae: lemnoideae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Babativa]]></surname>
<given-names><![CDATA[Daniel Ferley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,aff1  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>21</volume>
<numero>1</numero>
<fpage>128</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-34752019000100128&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-34752019000100128&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-34752019000100128&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Lemna minuta es una macrófita flotante de amplia distribución en ecosistemas lénticos, que puede ser útil en el desarrollo de experimentos ecofisiológicos y ecotoxicológicos debido a su potencial sensibilidad a contaminantes acuáticos como toxinas y metales pesados. Para estos, inicialmente se deben establecer cultivos axénicos con sus poblaciones bajo condiciones de laboratorio, los cuales requieren técnicas de limpieza para sus frondas que aún no han sido definidas. Se adaptó el método de Acreman en su tiempo de exposición y concentración de hipoclorito de sodio, propuesto para la desinfección de las especies pertenecientes al género Lemna L. (Lemnoideae) a partir de colonias nativas. Las colonias se obtuvieron de un humedal de la ciudad de Bogotá, y posteriormente se aclimataron y desinfectaron en diferentes tiempos y soluciones de hipoclorito. Los resultados más adecuados para la remoción de algas epífitas y otros microrganismos de las frondas, sin presentar alta mortalidad de las colonias, se obtuvieron, respectivamente, en las concentraciones 0,5 % (45 y 30 segundos) y 0,25 % (60 segundos) de hipoclorito. Por el contrario, el tiempo de exposición de 60 segundos propuesto por el método Acreman (0,5%) resultó en la mortalidad total de las frondas (100 %). Se sugiere utilizar una solución de hipoclorito de sodio 0,5% en un tiempo de exposición menor o igual a 45 segundos para la desinfección de colonias de L. minuta con fines experimentales.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Lemna minuta is a floating macrophyte widely distributed in lentic ecosystems, which may be useful for development of ecophysiological and ecotoxicological experiments, due to its sensitivity to water pollutants such as toxins and heavy metals. Axenic cultures and cleaning techniques of fronds from their populations under laboratory conditions have not yet been defined. Acreman method was modified in exposure time and concentration of sodium hypochlorite for disinfection from native colonies of species belong to genus Lemna L. (Lemnoideae). The colonies were obtained from an urban wetland of Bogota city, and they were acclimatized and disinfected at different times with hypochlorite solutions. The most suitable results for the removal of epiphytic algae and other microorganisms of the fronds, without showing high mortality of colonies, were obtained, respectively, in 0,5 % (45 and 30 seconds) and 0,25 % (60 seconds) hypochlorite concentrations. By contrast, the exposure time of 60 seconds proposed by Acreman method (0,5 %) resulted in total mortality of fronds (100 %). This report suggests use a solution of 0,5 % sodium hypochlorite in an exposure time of 45 seconds or less for disinfect colonies of L. minuta with experimental purposes.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[fronda]]></kwd>
<kwd lng="es"><![CDATA[hipoclorito]]></kwd>
<kwd lng="es"><![CDATA[Lemna minuta]]></kwd>
<kwd lng="es"><![CDATA[medio de cultivo]]></kwd>
<kwd lng="en"><![CDATA[contamination]]></kwd>
<kwd lng="en"><![CDATA[frond]]></kwd>
<kwd lng="en"><![CDATA[hypochlorite]]></kwd>
<kwd lng="en"><![CDATA[Lemna minuta]]></kwd>
<kwd lng="en"><![CDATA[culture media]]></kwd>
</kwd-group>
</article-meta>
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