2026-05-05T14:40:01Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/51172021-11-10T09:38:26Zcom_10259_4313com_10259_5086com_10259_2604com_10259_4365col_10259_4314col_10259_4366

Vallejos Calzada, Saúl 567 500 Moreno Mediavilla, Daniel 376 500 Ibeas Cortes, Saturnino 293 500 Muñoz Santamaría, María Asunción 385 500 García García, Félix Clemente 201 500 García Pérez, José Miguel 213 500 2019-06-13T11:46:44Z 2019-12 2020-12-31 0956-7135 http://hdl.handle.net/10259/5117 10.1016/j.foodcont.2019.06.010 We have developed a new method for the rapid and inexpensive determination of the total polyphenol index (TPI) in wines by simply immersing our sensory film in red or white wines and visually checking the colour change (qualitative analysis) or by analysing a photo taken of the film with a smartphone (quantitative analysis). This sensory material is straightforward and inexpensively prepared; it requires no monomer synthesis, is based on 100% commercially available monomers, and contains benzenediazonium salt motifs, which in the presence of phenols and/or polyphenol-based structures produce coloured diazo compounds. These sensory motifs are chemically anchored to the polymeric structure, and, accordingly, no migration of organic substances from the material occurs in the sensing process. Our method needs neither reagents nor sample pretreatment and has been contrasted with the standard TPI determination, i.e., measuring the absorbance of diluted wine at 280 nm, obtaining reliable data for white and red wines. Fondo Europeo de Desarrollo Regional and both the Spanish Agencia Estatal de Investigación (MAT2017-84501-R) and the Consejería de Educación, Junta de Castilla y León (BU306P18) application/pdf eng Elsevier Food Control. 2019, V. 106, 106684 https://doi.org/10.1016/j.foodcont.2019.06.010 info:eu-repo/grantAgreement/MICINN/MAT2017-84501-R info:eu-repo/grantAgreement/JCyL/BU306P18 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Polymeric sensors Solid phase reactions Colorimetric sensors Polyphenol sensors TPI Química orgánica Chemistry, Organic Polymeric chemosensor for the colorimetric determination of the total polyphenol index (TPI) in wines info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 805 https://riubu.ubu.es/bitstream/10259/5117/8/license_rdf 4460e5956bc1d1639be9ae6146a50347 MD5 8 THUMBNAIL Vallejos-fc_2019.pdf.jpg Vallejos-fc_2019.pdf.jpg IM Thumbnail image/jpeg 4347 https://riubu.ubu.es/bitstream/10259/5117/7/Vallejos-fc_2019.pdf.jpg dc37dc766cf56e2b1329141a514398e6 MD5 7 ORIGINAL Vallejos-fc_2019.pdf Vallejos-fc_2019.pdf application/pdf 925914 https://riubu.ubu.es/bitstream/10259/5117/1/Vallejos-fc_2019.pdf fde95e81880627c83219e6009094362e MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/5117/5/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 5 TEXT Vallejos-fc_2019.pdf.txt Vallejos-fc_2019.pdf.txt Extracted text text/plain 40758 https://riubu.ubu.es/bitstream/10259/5117/6/Vallejos-fc_2019.pdf.txt e772dd013723b43e00ed18a7cdbbe860 MD5 6 10259/5117 oai:riubu.ubu.es:10259/5117 2021-11-10 10:38:26.454 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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