<?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>1665-2738</journal-id>
<journal-title><![CDATA[Revista mexicana de ingeniería química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Ing. Quím]]></abbrev-journal-title>
<issn>1665-2738</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma Metropolitana, División de Ciencias Básicas e Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-27382015000200002</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Colorimetric image analysis as a factor in assessing the quality of pork ham slices during storage]]></article-title>
<article-title xml:lang="es"><![CDATA[Análisis colorimétrico de imágenes como factor de evaluación de la calidad de rebanadas de jamón de cerdo durante almacenamiento]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Porras-Barrientos]]></surname>
<given-names><![CDATA[L.D.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Hurtado]]></surname>
<given-names><![CDATA[M.I.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-González]]></surname>
<given-names><![CDATA[O.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sotelo-Díaz]]></surname>
<given-names><![CDATA[L.I.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Camelo-Méndez]]></surname>
<given-names><![CDATA[G.A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Quintanilla-Carvajal]]></surname>
<given-names><![CDATA[M.X.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Centro de Investigación y Desarrollo Cárnico Industria de Alimentos Zenú S.A.S. Grupo Nutresa ]]></institution>
<addr-line><![CDATA[Medellín ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad de la Sabana Facultad de Ingeniería Programa Ingeniería de Producción Agroindustrial]]></institution>
<addr-line><![CDATA[Chía Cundinamarca]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2015</year>
</pub-date>
<volume>14</volume>
<numero>2</numero>
<fpage>243</fpage>
<lpage>252</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-27382015000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-27382015000200002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-27382015000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[This study analysed the colour changes of stored pork ham slices at two temperatures (4 and 8°C) to compare two imaging methodologies for estimating colour changes over time in CIELAB colour spaces through a DigiEye® and stereoscope with digital image analysis. Colour space changes were analysed using a computer vision system for image segmentation analysis. It was determined that from the ninth day, changes could be perceived in the representative colour of ham slices using DigiEye®. Finally, colour prediction equations with R² > 0.85 were determined as a tool for electronic monitoring to assessing the quality of pork ham slices during storage.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este estudio se analizaron los cambios de color de rodajas de jamón de cerdo almacenadas a dos temperaturas (4 y 8°C) con el fin de comparar dos metodologías de captura de imagen para la estimación de los cambios de color en el tiempo en los espacios de color CIELAB a través de un DigiEye®, y estereoscopio con análisis digital de imágenes. Los cambios de espacio de color se analizaron utilizando un sistema de visión por computador para el análisis de segmentación de las imágenes. Se determinó que a partir del noveno día, los cambios de color representativos podrían ser percibidos en las rebanadas de jamón utilizando DigiEye®. Por último, se lograron obtener ecuaciones de predicción de color con R² > 0.85 como una herramienta para el monitoreo electrónico para la evaluación de la calidad de las rodajas de jamón de cerdo durante el almacenamiento.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[colorimetric analysis]]></kwd>
<kwd lng="en"><![CDATA[ham]]></kwd>
<kwd lng="en"><![CDATA[&#916;E*ab]]></kwd>
<kwd lng="en"><![CDATA[storage conditions]]></kwd>
<kwd lng="es"><![CDATA[análisis colorimétrico]]></kwd>
<kwd lng="es"><![CDATA[jamón, &#916;E*ab]]></kwd>
<kwd lng="es"><![CDATA[condiciones de almacenamiento]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Ingenier&iacute;a de alimentos</font></p>     <p align="justify">&nbsp;</p>     <p align="center"><font face="verdana" size="4"><b>Colorimetric image analysis as a factor in assessing the quality of pork ham slices during storage </b></font></p>     <p align="center">&nbsp;</p>     <p align="center"><font face="verdana" size="3"><b>An&aacute;lisis colorim&eacute;trico de im&aacute;genes como factor de evaluaci&oacute;n de la calidad de rebanadas de jam&oacute;n de cerdo durante almacenamiento</b></font></p>     <p align="center">&nbsp;</p>  	    <p align="center"><font face="verdana" size="2"><b>L.D. Porras&#45;Barrientos<sup>1</sup>, M.I. Gonz&aacute;lez&#45;Hurtado<sup>1</sup>, O.A. Ochoa&#45;Gonz&aacute;lez<sup>1</sup>, L.I. Sotelo&#45;D&iacute;az<sup>2</sup>, G.A. Camelo&#45;M&eacute;ndez<sup>2</sup> and M.X. Quintanilla&#45;Carvajal<sup>2</sup></b></font>*</p>     <p align="center">&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Centro de Investigaci&oacute;n</i> y <i>Desarrollo C&aacute;rnico. Industria de Alimentos Zen&uacute; S.A.S. Grupo Nutresa. Cra 64C &#35; 104&#45;03. Medell&iacute;n, Colombia. </i></font></p> 	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><i><sup>2 </sup>Facultad de Ingenier&iacute;a. Programa Ingenier&iacute;a de Producci&oacute;n Agroindustrial. Universidad de La Sabana. Grupo de Procesos Agroindustriales. Campus del Puente del Com&uacute;n, Km.</i> 7, <i>Autopista Norte de Bogot&aacute;. Ch&iacute;a, Cundinamarca, Colombia. *Corresponding author.</i> E&#45;mail: <a href="mailto:maria.quintanilla1@unisabana.edu.co">maria.quintanilla1@unisabana.edu.co</a>, <i>Tel +5718615555 ext 25216.</i></font></p>     <p align="justify">&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2">Received November 11, 2014    <br>Accepted March 18, 2015</font></p> 	    <p align="justify">&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">This study analysed the colour changes of stored pork ham slices at two temperatures (4 and 8&deg;C) to compare two imaging methodologies for estimating colour changes over time in CIELAB colour spaces through a DigiEye&reg; and stereoscope with digital image analysis. Colour space changes were analysed using a computer vision system for image segmentation analysis. It was determined that from the ninth day, changes could be perceived in the representative colour of ham slices using DigiEye&reg;. Finally, colour prediction equations with <i>R<sup>2</sup></i> &gt; 0.85 were determined as a tool for electronic monitoring to assessing the quality of pork ham slices during storage.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Key words:</b> colorimetric analysis, ham, <i>&#916;E*<sub>ab</sub></i>, storage conditions.</font></p>     <p align="justify">&nbsp;</p>  	    <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">En este estudio se analizaron los cambios de color de rodajas de jam&oacute;n de cerdo almacenadas a dos temperaturas (4 y 8&deg;C) con el fin de comparar dos metodolog&iacute;as de captura de imagen para la estimaci&oacute;n de los cambios de color en el tiempo en los espacios de color CIELAB a trav&eacute;s de un DigiEye&reg;, y estereoscopio con an&aacute;lisis digital de im&aacute;genes. Los cambios de espacio de color se analizaron utilizando un sistema de visi&oacute;n por computador para el an&aacute;lisis de segmentaci&oacute;n de las im&aacute;genes. Se determin&oacute; que a partir del noveno d&iacute;a, los cambios de color representativos podr&iacute;an ser percibidos en las rebanadas de jam&oacute;n utilizando DigiEye&reg;. Por &uacute;ltimo, se lograron obtener ecuaciones de predicci&oacute;n de color con <i>R</i><sup>2</sup> &gt; 0.85 como una herramienta para el monitoreo electr&oacute;nico para la evaluaci&oacute;n de la calidad de las rodajas de jam&oacute;n de cerdo durante el almacenamiento.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> an&aacute;lisis colorim&eacute;trico, jam&oacute;n, <i>&#916;E*<sub>ab</sub></i>, condiciones de almacenamiento.</font></p>     <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><a href="../pdf/rmiq/v14n2/v14n2a2.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify">&nbsp;</p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">Blasco, J., Cubero, S., G&oacute;mez&#45;Sanch&iacute;s, J., Mira, P. &amp; Molt&oacute; E. (2009). Development of a machine for the automatic sorting of pomegranate <i>(Punica granatum)</i> arils based on computer vision. <i>Journal Food Engineering 90,</i> 27&#45;34.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8586284&pid=S1665-2738201500020000200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">Brosnan, T. &amp; Sun, D. (2004). Improving quality inspection of food products by computer vision&#45;a review. <i>Journal Food Engineering 61,</i> 3&#45;16.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8586286&pid=S1665-2738201500020000200002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
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</ref>
</ref-list>
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