<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T07:30:28Z</responseDate><request verb="GetRecord" identifier="oai:riubu.ubu.es:10259/10814" metadataPrefix="didl">https://riubu.ubu.es/oai/request</request><GetRecord><record><header><identifier>oai:riubu.ubu.es:10259/10814</identifier><datestamp>2025-08-29T07:54:13Z</datestamp><setSpec>com_10259.4_2520</setSpec><setSpec>com_10259_5086</setSpec><setSpec>com_10259_2604</setSpec><setSpec>com_10259_4313</setSpec><setSpec>col_10259_9393</setSpec><setSpec>col_10259_6735</setSpec><setSpec>col_10259_5684</setSpec></header><metadata><d:DIDL xmlns:d="urn:mpeg:mpeg21:2002:02-DIDL-NS" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:mpeg21:2002:02-DIDL-NS http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didl.xsd">
<d:DIDLInfo>
<dcterms:created xmlns:dcterms="http://purl.org/dc/terms/" xsi:schemaLocation="http://purl.org/dc/terms/ http://dublincore.org/schemas/xmls/qdc/dcterms.xsd">2025-08-25T12:22:25Z</dcterms:created>
</d:DIDLInfo>
<d:Item id="hdl_10259_10814">
<d:Descriptor>
<d:Statement mimeType="application/xml; charset=utf-8">
<dii:Identifier xmlns:dii="urn:mpeg:mpeg21:2002:01-DII-NS" xsi:schemaLocation="urn:mpeg:mpeg21:2002:01-DII-NS http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/dii/dii.xsd">urn:hdl:10259/10814</dii:Identifier>
</d:Statement>
</d:Descriptor>
<d:Descriptor>
<d:Statement mimeType="application/xml; charset=utf-8">
<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
<dc:title>Dataset of the work "UBU-Polymers Research Group 28032025" ﻿</dc:title>
<dc:creator>Gaona Ruiz, María</dc:creator>
<dc:creator>Torija López, Alba</dc:creator>
<dc:creator>Trigo López, Miriam</dc:creator>
<dc:creator>Arnáiz Alonso, Ana</dc:creator>
<dc:creator>Sedano Labrador, Carlos</dc:creator>
<dc:creator>Rodríguez Velasco, Ana</dc:creator>
<dc:creator>Vallejo García, Jorge Lucas</dc:creator>
<dc:creator>Carrillo Pérez, Celia</dc:creator>
<dc:creator>Vallejos Calzada, Saúl</dc:creator>
<dc:subject>Polyacrylic films</dc:subject>
<dc:subject>Sensory polymers</dc:subject>
<dc:subject>Beetroot</dc:subject>
<dc:subject>Food industry</dc:subject>
<dc:subject>Colorimetric detection</dc:subject>
<dc:subject>Smartphone-based analysis</dc:subject>
<dc:subject>Antioxidant capacity</dc:subject>
<dc:subject>Food quality control</dc:subject>
<dc:description>Antioxidants are used as markers of the functional potential of foods, making their accurate quantification essential for assessing bioactivity and possible health benefits. A smart polymer incorporating 2,2-diphenyl-1-picrylhydrazyl (DPPH) motifs (FDPPH) was synthesized via bulk polymerization of N-vinylpyrrolidone, methyl methacrylate, and a diphenylamine-functionalized monomer, followed by solid-phase reactions to introduce the DPPH functionality. FTIR and thermal analysis confirmed successful synthesis. The FDPPH sensor showed a colorimetric response consistent with DPPH in solution, demonstrating its reliability. Twenty-three beet samples were analyzed using both the conventional DPPH assay and the FDPPH method, where polymer discs were immersed and colour changes recorded via smartphone. The hue (H) parameter in the HSV colour-space showed the highest correlation. Calibration using beet samples was more accurate than with Trolox. The optimal response time was 3 hours, with a LOD and LOQ of 0.063 and 0.191 mmol Trolox/L, respectively.</dc:description>
<dc:date>2025-08-25T12:22:25Z</dc:date>
<dc:date>2025-08-25T12:22:25Z</dc:date>
<dc:date>2025-08-25</dc:date>
<dc:type>dataset</dc:type>
<dc:identifier>María Gaona, Torija López, A., Trigo López, M., Arnaiz, A., Sedano Labrador, C., Rodríguez Velasco, A., Vallejo García, J. L., Carrillo, C., &amp; Vallejos, S. (2025). Dataset of the work "UBU-Polymers Research Group 28032025" ﻿ [Data set]. Universidad de Burgos. https://doi.org/10.71486/wmk5-gy48</dc:identifier>
<dc:identifier>https://hdl.handle.net/10259/10814</dc:identifier>
<dc:identifier>10.71486/wmk5-gy48</dc:identifier>
<dc:language>eng</dc:language>
<dc:relation>info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2023-147301OB-I00/ES/POLIMEROS INTELIGENTES COMO MATERIALES AVANZADOS, SU DISEÑO Y SINTESIS PARA APLICACIONES EN BIOMEDICINA, AGROALIMENTACION Y SOSTENIBILIDAD AMBIENTAL/</dc:relation>
<dc:relation>info:eu-repo/grantAgreement/Junta de Castilla y León//BU025P23//Polímeros inteligentes. Aplicación en seguridad y control alimentario y biomédico, construcción sostenible y biorremediación (pin)/</dc:relation>
<dc:relation>info:eu-repo/grantAgreement/MIU/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/BG22%2F00086/ES/</dc:relation>
<dc:relation>info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PRE2021-098123/ES/</dc:relation>
<dc:relation>info:eu-repo/grantAgreement/MICIU//3101166576-166576-29-325/ES/</dc:relation>
<dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:rights>Atribución 4.0 Internacional</dc:rights>
<dc:coverage>north=42.340833; west=-3.699722; name=Burgos, Spain</dc:coverage>
<dc:coverage>start=2024; end=2025</dc:coverage>
<dc:publisher>Universidad de Burgos</dc:publisher>
</oai_dc:dc>
</d:Statement>
</d:Descriptor>
<d:Component id="10259_10814_4">
<d:Resource ref="https://riubu.ubu.es/bitstream/10259/10814/4/readme.txt" mimeType="text/plain"/>
</d:Component>
<d:Component id="10259_10814_1">
<d:Resource ref="https://riubu.ubu.es/bitstream/10259/10814/1/Raw-28032025.rar" mimeType="application/x-rar-compressed"/>
</d:Component>
</d:Item>
</d:DIDL></metadata></record></GetRecord></OAI-PMH>