<?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>2007-1124</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias pecuarias]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. de cienc. pecuarias]]></abbrev-journal-title>
<issn>2007-1124</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-11242022000300625</article-id>
<article-id pub-id-type="doi">10.22319/rmcp.v13i3.5997</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Evaluación de la reacción en cadena de la polimerasa en tiempo real acoplado a separación inmunomagnética (PCRTR-IMS) como método alternativo para la detección rutinaria de Salmonella spp. en carne de res en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Evaluation of real-time polymerase chain reaction coupled to immunomagnetic separation (rtPCR-IMS) as an alternative method for the routine detection of Salmonella spp. in beef in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castañeda-Ruelas]]></surname>
<given-names><![CDATA[Gloria Marisol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Uriarte]]></surname>
<given-names><![CDATA[José Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Torres]]></surname>
<given-names><![CDATA[José Benigno]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León-Félix]]></surname>
<given-names><![CDATA[Josefina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Sinaloa Facultad de Ciencias Químico-Biológicas ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro de Investigación en Alimentación y Desarrollo, AC.  ]]></institution>
<addr-line><![CDATA[Culiacán Sinaloa]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2022</year>
</pub-date>
<volume>13</volume>
<numero>3</numero>
<fpage>625</fpage>
<lpage>642</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-11242022000300625&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-11242022000300625&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-11242022000300625&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Salmonella es una bacteria patógena considerada una amenaza para la industria alimentaria, siendo relevante su detección oportuna. El objetivo del estudio fue evaluar la reacción en cadena de polimerasa en tiempo real acoplado a separación inmunomagnética (rtPCR-IMS) como método alternativo a la Norma Oficial Mexicana (NOM-114-SSA1-1994) para la detección de Salmonella en carne de res. Los parámetros evaluados fueron límite de detección, sensibilidad, especificidad, selectividad (inclusión y exclusividad), y grado de concordancia entre ambos métodos para la detección de Salmonella en muestras de carne de res presuntivas y contaminadas artificialmente. La incidencia de Salmonella en las muestras presuntivas de carne (n= 60) osciló de 20.0 a 21.6 % por ambos métodos. En las muestras inoculadas (n= 60), la tasa de detección de Salmonella por rtPCR-IMS (93.3 %) y NOM-114-SSA1-1994 (98.3 %) mostró una coincidencia de 56 ocasiones con una desviación negativa. La comparación de rtPCR-IMS y NOM-114-SSA1-1994 en carne de res reportó una exactitud de 98.3 %, sensibilidad de 98.2 %, especificidad de 100 % y selectividad de 100 %. El límite de detección para ambos métodos fue 1-5 UFC·25 g-1 de carne. El análisis estadístico indica que el rtPCR-IMS es equivalente al método de referencia para la detección de Salmonella en carne de res. Estos resultados advierten la alta incidencia de Salmonella en carne de res y proponen al rtPCR-IMS como un método idóneo y rápido para el control de Salmonella en la industria cárnica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Salmonella is a pathogenic bacterium considered a threat to the food industry, its timely detection being relevant. The objective of the study was to evaluate the real-time polymerase chain reaction coupled to immunomagnetic separation (rtPCR-IMS) as an alternative method to the Official Mexican Standard (NOM-114-SSA1-1994) for the detection of Salmonella in beef. The parameters evaluated were limit of detection, sensitivity, specificity, selectivity (inclusivity and exclusivity) and degree of agreement between both methods for the detection of Salmonella in presumptive and artificially contaminated beef samples. The incidence of Salmonella in presumptive beef samples (n= 60) ranged from 20.0 to 21.6 % by both methods. In the inoculated samples (n= 60), the detection rate of Salmonella by rtPCR-IMS (93.3 %) and NOM-114-SSA1-1994 (98.3 %) showed a match of 56 occasions with a negative deviation. The comparison of rtPCR-IMS and NOM-114-SSA1-1994 in beef reported an accuracy of 98.3 %, sensitivity of 98.2 %, specificity of 100 % and selectivity of 100 %. The limit of detection for both methods was 1-5 CFU·25 g-1 of beef. The statistical analysis indicates that the rtPCR-IMS is equivalent to the reference method for the detection of Salmonella in beef. These results warn of the high incidence of Salmonella in beef and propose rtPCR-IMS as an ideal and fast method for the control of Salmonella in the meat industry.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carne]]></kwd>
<kwd lng="es"><![CDATA[Reacción en cadena de la polimerasa (PCR)]]></kwd>
<kwd lng="es"><![CDATA[Salmonella]]></kwd>
<kwd lng="es"><![CDATA[Separación Inmunomagnética (IMS)]]></kwd>
<kwd lng="en"><![CDATA[Beef]]></kwd>
<kwd lng="en"><![CDATA[Polymerase chain reaction (PCR)]]></kwd>
<kwd lng="en"><![CDATA[Salmonella]]></kwd>
<kwd lng="en"><![CDATA[Immunomagnetic separation (IMS)]]></kwd>
</kwd-group>
</article-meta>
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