<?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>1794-4449</journal-id>
<journal-title><![CDATA[Revista Lasallista de Investigación]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Lasallista Investig.]]></abbrev-journal-title>
<issn>1794-4449</issn>
<publisher>
<publisher-name><![CDATA[Corporación Universitaria Lasallista]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-44492021000100192</article-id>
<article-id pub-id-type="doi">10.22507/rli.v18n1a12</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Determinación de la Calidad Microbiológica del Río Toca-Boyacá, Sector Tuaneca abajo y el Centro]]></article-title>
<article-title xml:lang="en"><![CDATA[Determination of the microbiological quality of the Toca-Boyacá River, downstream Tuaneca and the center sectors]]></article-title>
<article-title xml:lang="pt"><![CDATA[Determinação da qualidade Microbiológica do Rio Toca-Boyacá, Setores Tuaneca abaixo e Centro]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cely-Ramírez]]></surname>
<given-names><![CDATA[Luz Edith]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Rubiano]]></surname>
<given-names><![CDATA[Claudia Constanza]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Parra-Arias]]></surname>
<given-names><![CDATA[Helver]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo]]></surname>
<given-names><![CDATA[Daniel Humberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Pedagógica y Tecnológica de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</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>18</volume>
<numero>1</numero>
<fpage>192</fpage>
<lpage>202</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-44492021000100192&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-44492021000100192&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-44492021000100192&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: el agua apta para el consumo humano es aquella que no representa un riesgo para la salud del consumidor teniendo en cuenta sus características organolépticas, físicas, químicas y bacteriológicas, pero dicha calidad es afectada por vertimientos de actividades domésticos, industriales y económicas (Gamboa et al., 2015).  Objetivo: este estudio se hizo con el fin de determinar la calidad microbiológica del río Toca, sector Tuaneca abajo y el Centro, Departamento de Boyacá, Colombia.  Materiales y métodos: en la cuenca, se establecieron cuatro puntos de muestreo, M1, M2, M3 y M4, en cada punto se colectaron muestras de 50 mL de agua con 20 réplicas, en frascos de vidrio estériles, las cuales fueron refrigeradas a 4°C en neveras de icopor y procesadas en el menor tiempo posible en el laboratorio de Microbiología de la UPTC; en donde se realizó cuantificación de mesófilos aerobios, mohos y levaduras mediante recuento en placa; coliformes totales y fecales se evaluaron mediante la técnica de Número más Probable (NMP).  Resultados: el punto de muestreo M1 presentó los mayores valores de coliformes totales con un valor de 1100 NMP/100mL, coliformes fecales: 43 NMP/100mL; así como de mohos y levaduras 61X103 UFC/mL; y el punto con mayor valor de mesófilos aerobios fue 13X104 UFC/ mL que corresponde al M2. Los puntos M3 y M4 presentaron ausencia de coliformes totales.  Conclusiones: en contraste con el Decreto 1594 de 1984, sobre usos del agua y residuos líquidos, el río Toca presenta mala calidad de agua en los puntos de muestreo M1 y M2, los cuales presentan actividad ganadera y vertimientos de aguas residuales domésticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: water suitable for human consumption is the one that does not represent a risk to the health for the consumer, considering its organoleptic, physical, chemical and bacteriological characteristics, but this quality is affected by dumping of domestic, industrial and economic activities (Gamboa et al., 2015).  Objective: this study was done in order to determine the microbiological quality of the Toca river, Tuaneca Abajo and the Center, department of Boyacá, Colombia.  Materials and methods: in the basin, four sampling points were established, M1, M2, M3 and M4, at each point 50 ml samples of water were collected with 20 replicas, in sterile glass jars, refrigerated at 4 ° C in icopor coolers and processed in the shortest possible time in UPTC microbiology laboratory; where aerobic mesophiles, molds and yeasts were quantified by aerobic plate count; Total and fecal coliforms were evaluated using the Most Probable Number Technique (MPN).  Results: the point sampling M1 had the highest of total coliforms values, equivalent to 1100 NMP/100mL, fecal coliforms: 43NMP/100mL. Likewise, of molds and yeasts 61X 103 CFU/mL; and the point with the highest value of mesophiles aerobic 13X104 CFU/mL corresponds to M2. Points M3 and M4 presented the absence of total coliforms.  Conclusions: in contrast to Decree 1594 of 1984, on the use of water and liquid waste, the Toca River has poor water quality at sampling points M1 and M2, which present livestock activity and discharge of domestic wastewater.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução: a água apta para o consumo humano é aquela que não representa um risco para a saúde do consumidor levando em conta suas características organolépticas, físicas, químicas e bacteriológicas, mas tal qualidade é afetada por vertimentos de atividades domésticas, industriais e econômicas (Spiro &amp; Stigliani, 2003).  Objetivo: determinar a qualidade microbiológica do rio Toca, setor Tuaneca Abajo e Centro, departamento de Boyacá, Colômbia.  Materiais e métodos: na bacia, estabeleceram- se quatro pontos de amostragem, M1, M2, M3 e M4, em cada ponto coletaram-se amostras de 50 mL de água com 20 réplicas, em frascos de vidro estéreis, as quais foram refrigeradas a 4°C em caixas de isopor e processadas no menor tempo possível no laboratório de Microbiologia da UPTC; onde realizou-se a quantificação de mesófilos aeróbios, mofos e leveduras mediante contagem em placa; os coliformes totais e fecais avaliaram-se mediante a técnica de Número mais Provável (NMP).  Resultados: os resultados obtidos indicam que o ponto de amostragem M1 apresentou os maiores valores de coliformes totais, equivalentes a 1100 NMP/100mL, coliformes fecais: 43 NMP/100mL Igualmente, de mofos e leveduras 61X 103UFC/ mL; e o ponto com maior valor de mesófilos aeróbios foi 13X104UFC/mL que corresponde ao ponto M2.  Conclusão: ao contrário do Decreto 1.594 de 1984, sobre o uso de água e esgoto líquido, O rio Toca apresenta má qualidade de água nos pontos de amostragem M1 e M2. Os pontos M3 e M4 apresentaram ausência de coliformes totais.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Calidad]]></kwd>
<kwd lng="es"><![CDATA[microorganismos]]></kwd>
<kwd lng="es"><![CDATA[contaminación]]></kwd>
<kwd lng="es"><![CDATA[salud pública]]></kwd>
<kwd lng="en"><![CDATA[Quality]]></kwd>
<kwd lng="en"><![CDATA[microorganisms]]></kwd>
<kwd lng="en"><![CDATA[pollution]]></kwd>
<kwd lng="en"><![CDATA[public health]]></kwd>
<kwd lng="pt"><![CDATA[Qualidade]]></kwd>
<kwd lng="pt"><![CDATA[microorganismos]]></kwd>
<kwd lng="pt"><![CDATA[contaminação]]></kwd>
<kwd lng="pt"><![CDATA[saúde pública]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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