<?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>2221-2442</journal-id>
<journal-title><![CDATA[Revista CENIC Ciencias Químicas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. CENIC Cienc. Quím.]]></abbrev-journal-title>
<issn>2221-2442</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Investigaciones Científicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2221-24422021000200196</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Development of a solid-phase microextraction method for determination of hexanal in mayonnaise-type soy dressing]]></article-title>
<article-title xml:lang="es"><![CDATA[Desarrollo de un método por microextracción en fase sólida para la determinación de hexanal en aderezo de soya tipo mayonesa its quality]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pino]]></surname>
<given-names><![CDATA[Jorge A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez Alfonso]]></surname>
<given-names><![CDATA[Claudia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campo Muiño]]></surname>
<given-names><![CDATA[Anier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Food Industry Research Institute Department of Aroma ]]></institution>
<addr-line><![CDATA[ Havana]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Havana Department of Foods Pharmacy and Food Institute]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Food Industry Research Institute Vegetable Division ]]></institution>
<addr-line><![CDATA[ Havana]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>52</volume>
<numero>2</numero>
<fpage>196</fpage>
<lpage>204</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2221-24422021000200196&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2221-24422021000200196&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2221-24422021000200196&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The aim of this study was to develop a headspace-solid phase microextraction (HS-SPME) method combined with gas chromatography for the determination of hexanal as an indicator of the oxidative changes in mayonnaise-type soy dressing. The identification and quantification of hexanal was done by gas chromatography with a mass selective detector (GC-MS). The method was optimized in terms of the type of fiber, temperature and extraction time, using a response surface design, and the hexanal content as response variable. The method was established with the polydimethylsiloxane-divinylbenzene fiber (PDMS/DVB), 0.3 g of sample, 10 min of pre-extraction, 35 min of extraction at 40 oC and 2 min of desorption at 250 oC. The validation of the developed method was carried out considering linearity, detection and quantification limits, and precision. Validation for the hexanal content technique showed that the method has a linear response in the range of 1 to 3000 ng/g of hexanal, a limit of detection of 1.06 ng/g, a limit of quantification of 3.53 ng/g, 3.3% average repeatability and 97.7% recovery.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El objetivo de este estudio fue desarrollar un método por microextracción en fase sólida del espacio de cabeza (HS-SPME) combinada con la cromatografía de gases para la determinación de hexanal como indicador de los cambios oxidativos en el aderezo de soya tipo mayonesa. La identificación y cuantificación del hexanal se hizo por cromatografía de gases con detector selectivo de masas (GC-MS). El método fue optimizado en cuanto al tipo de fibra, temperatura y tiempo de extracción mediante un diseño de superficie de respuesta tomando como variable de respuesta el contenido de hexanal. El método se estableció con la fibra de polidimetilsiloxano-divinilbenceno (PDMS/DVB), 0,3 g de muestra, 10 min de pre-extracción, 35 min de extracción a 40 oC y 2 min de desorción a 250 oC. Se realizó la validación del método desarrollado atendiendo a la linealidad, límites de detección y cuantificación, y precisión. Se estableció un método por HS-SPME para la determinación del contenido de hexanal en aderezo de soya tipo mayonesa con los parámetros siguientes: fibra de PDMS/DVB 65 (m; 0,3 g de muestra en vial de 8 mL; 10 min de pre-extracción; 35 min de extracción a 40 oC y 2 min de desorción a 250 oC. La validación para la técnica del contenido de hexanal mostró que el método tiene una respuesta es lineal en el intervalo de 1 a 3 000 ng/g de hexanal, posee un límite de detección de 1,06 ng/g y un límite de cuantificación de 3,53 ng/g, tiene una repetibilidad promedio de 3,3 % y posee 97,7 % de recobrado.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[soy dressing]]></kwd>
<kwd lng="en"><![CDATA[oxidation]]></kwd>
<kwd lng="en"><![CDATA[hexanal]]></kwd>
<kwd lng="en"><![CDATA[solid phase microextraction]]></kwd>
<kwd lng="en"><![CDATA[gas chromatography-mass spectrometry]]></kwd>
<kwd lng="en"><![CDATA[validation]]></kwd>
<kwd lng="es"><![CDATA[aderezo de soya]]></kwd>
<kwd lng="es"><![CDATA[oxidación]]></kwd>
<kwd lng="es"><![CDATA[hexanal]]></kwd>
<kwd lng="es"><![CDATA[microextracción en fase sólida]]></kwd>
<kwd lng="es"><![CDATA[cromatografía de gases-espectrometría de masas]]></kwd>
<kwd lng="es"><![CDATA[validación]]></kwd>
</kwd-group>
</article-meta>
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