RT info:eu-repo/semantics/article
T1 Polymeric chemosensor for the colorimetric determination of the total polyphenol index (TPI) in wines
A1 Vallejos Calzada, Saúl
A1 Moreno Mediavilla, Daniel
A1 Ibeas Cortes, Saturnino
A1 Muñoz Santamaría, María Asunción
A1 García García, Félix Clemente
A1 García Pérez, José Miguel
K1 Polymeric sensors
K1 Solid phase reactions
K1 Colorimetric sensors
K1 Polyphenol sensors
K1 TPI
K1 Química orgánica
K1 Chemistry, Organic
AB 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.
PB Elsevier
SN 0956-7135
YR 2019
FD 2019-12
LK http://hdl.handle.net/10259/5117
UL http://hdl.handle.net/10259/5117
LA eng
NO 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)
DS Repositorio Institucional de la Universidad de Burgos
RD 25-abr-2024