<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532021000100152</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v88n216.85978</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Chlamydospores production enhancement of Duddingtonia flagrans in a solid-state fermentation system]]></article-title>
<article-title xml:lang="es"><![CDATA[Mejora de la producción de clamidosporas de Duddingtonia flagrans en un sistema de fermentación en estado sólido]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cuadrado-Osorio]]></surname>
<given-names><![CDATA[Paula Daniela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-Saldarriaga]]></surname>
<given-names><![CDATA[Carlos Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cubides -Cárdenas]]></surname>
<given-names><![CDATA[Jaime Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez Álvarez]]></surname>
<given-names><![CDATA[Martha Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bautista]]></surname>
<given-names><![CDATA[Eddy J]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria - Agrosavia  ]]></institution>
<addr-line><![CDATA[Bogotá ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Corporación Colombiana de Investigación Agropecuaria - Agrosavia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>88</volume>
<numero>216</numero>
<fpage>152</fpage>
<lpage>159</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532021000100152&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532021000100152&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532021000100152&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Resistance structures such as chlamydospores produced by the fungus Duddingtonia flagrans allow the reduction of infectious larvae from gastrointestinal nematodes. The objective of this research was to study the effect of carbon and nitrogen sources on the production of chlamydospores of the fungus in a solid state fermentation system (SSF). Twelve substances were studied using a statistical strategy, evaluating their effect on the production of Chlamydospores Finally, using an optimization strategy, the modifications of the substances that favor the production of chlamydospores were defined, and the effect of these on the predatory capacity of the fungus was evaluated. Optimal conditions were the variability of 0.25% w / w ammonium sulfate and 0.56% w / w sodium acetate in broken rice. The maximum concentration reached under this condition was 2.27x107 chlamydospores g of dry substrate-1, with a productivity of 1.62x106 chlamydospores g of dry substrate-1 day-1.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Estructuras de resistencia como las clamidosporas producidas por el hongo Duddingtonia flagrans permiten la reducción de larvas infecciosas de nematodos gastrointestinales. El objetivo de esta investigación fue estudiar el efecto de fuentes de carbono y nitrógeno sobre la producción de clamidosporas del hongo en un sistema de fermentación en estado sólido (SSF), doce sustancias fueron estudiadas mediante una estrategia estadística, evaluando su efecto sobre la producción de clamidosporas. Finalmente, usando una estrategia de optimización se definió las concentraciones de las sustancias que favorecían la producción de clamidosporas, y se evaluó el efecto de estas sobre la capacidad predatoria del hongo. Las condiciones óptimas fueron la adición de 0.25% p/p de sulfato de amonio y 0.56% p/p de acetato de sodio al arroz partido. La concentración máxima alcanzada bajo esta condición fue de 2.27x107 clamidosporas g de sustrato seco-1, con una productividad de 1.62x106 clamidosporas g de sustrato seco-1 día-1.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Placket Burman design]]></kwd>
<kwd lng="en"><![CDATA[central compose design]]></kwd>
<kwd lng="en"><![CDATA[nematode trapping fungi]]></kwd>
<kwd lng="en"><![CDATA[ammonium sulphate and sodium acetate]]></kwd>
<kwd lng="es"><![CDATA[diseño Plackett Burman]]></kwd>
<kwd lng="es"><![CDATA[diseño central compuesto]]></kwd>
<kwd lng="es"><![CDATA[hongos nematofagos]]></kwd>
<kwd lng="es"><![CDATA[sulfato de amonio y acetato de sodio]]></kwd>
</kwd-group>
</article-meta>
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