<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562022000200094</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v24i2.1642</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Extracción, caracterización y actividad antioxidante de lignina de lirio acuático (Eichhornia crassipes) y cáscara de nuez pecanera (Carya illinoinensis)]]></article-title>
<article-title xml:lang="en"><![CDATA[Extraction, characterization and antioxidant activity of lignin from water hyacinth (Eichhornia crassipes) and pecan nut shell (Carya illinoinensis)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinoza-Acosta]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montaño-Leyva]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia-Rivera]]></surname>
<given-names><![CDATA[DE]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ledesma-Osuna]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vega-Ríos]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Estatal de Sonora  ]]></institution>
<addr-line><![CDATA[Navojoa Sonora]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Sonora Departamento de Investigación y Posgrado en Alimentos ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Sonora Departamento de Ciencias Químico-Biológicas y Agropecuarias ]]></institution>
<addr-line><![CDATA[Caborca Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Centro de Investigación en Materiales Avanzados Departamento de Ingeniería y Química de Materiales ]]></institution>
<addr-line><![CDATA[Chihuahua Chihuahua]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>24</volume>
<numero>2</numero>
<fpage>94</fpage>
<lpage>103</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562022000200094&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562022000200094&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562022000200094&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En este trabajo se investigó el potencial de lirio acuático (Eichhornia crassipes) y cáscara de nuez pecanera (Carya illinoinensis) como fuente de lignina. La extracción de la lignina se realizó aplicando un procedimiento organosolv y fue caracterizada por espectroscopía de infrarrojo, microscopía electrónica de barrido, y análisis termogravimétrico. La actividad antioxidante fue determinada a través de la estabilización de los radicales libres DPPH y ABTS. Los resultados mostraron mayor porcentaje de lignina y rendimiento de extracción en las cáscaras de nuez. El espectro infrarrojo reveló bandas típicas de los principales grupos funcionales; grupos -OH fenólicos, grupos metilo C-H3 y metoxilo O-CH3 los cuales forman parte del anillo aromático de la lignina. La lignina de lirio acuático (LLA) mostró alta resistencia a la degradación térmica esto la sitúa como componente interesante para el desarrollo de resinas fenólicas o retardantes de flama. La lignina extraída de las cáscaras de nuez pecanera (LCN) mostró un alto porcentaje de inhibición contra los radicales DPPH y ABTS cuando fue solubilizada en etanol, metanol y mezclas de etanol-metanol 50:50 v/v. La alta actividad antioxidante de la LCN indica que este tipo de lignina pueden tener aplicaciones en la industria de alimentos y farmacéutica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this work, the potential of water hyacinth (Eichhornia crassipes) and pecan nutshell (Carya illinoinensis) as a source of lignin was investigated. The lignin extraction was carried out using an organosolv procedure and was characterized by infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. The antioxidant activity was determined through the stabilization of the DPPH and ABTS free radicals. The results showed higher lignin content and extraction performance in pecan nutshells. The infrared spectrum revealed typical bands of the main functional groups; phenolic -OH groups, C - H3 methyl groups, and O-CH3 methoxyl which are part of the lignin aromatic ring. The water hyacinth lignin (LLA) showed high resistance to thermal degradation which places it as an interesting component for the development of phenolic resins or flame retardants. The lignin extracted from pecan nutshell (LCN) showed a high percentage of inhibition against DPPH and ABTS radicals when solubilized in ethanol, methanol, and ethanol-methanol mixtures (50:50 v/v). The high antioxidant activity of LCN indicates that this type of lignin may have applications in the food and pharmaceutical industries.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Lignina]]></kwd>
<kwd lng="es"><![CDATA[lirio acuático]]></kwd>
<kwd lng="es"><![CDATA[cascara de nuez]]></kwd>
<kwd lng="es"><![CDATA[actividad antioxidante]]></kwd>
<kwd lng="en"><![CDATA[Lignin]]></kwd>
<kwd lng="en"><![CDATA[water hyacinth]]></kwd>
<kwd lng="en"><![CDATA[pecan nutshell]]></kwd>
<kwd lng="en"><![CDATA[antioxidant activity]]></kwd>
</kwd-group>
</article-meta>
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