title: Volatile phenols depletion in red wine using molecular imprinted polymers.
abstract: Wines can be modified by microorganisms during the ageing process, by producing off-flavours like volatile phenols (VP), leading to their deterioration, with great economic losses. The development of methods to recover wines affected by unwanted VP became an important target. Molecular imprinted polymers (MIPs) are synthetic materials with artificially-generated recognition sites for selective extraction of organic compounds from different matrices. In this work, two MIPs to remove unwanted VP from wines were developed and their effects were evaluated. Volatile compounds were determined by GC-FID and GC-IT/MS and phenolic compounds (non-coloured and anthocyanins) by HPLC-DAD. The treatment with MIP-4EG and MIP-4EP significantly reduced the content of 4-ethylguaiacol and 4-ethylphenol, respectively. Nevertheless, the changes observed in wine non-coloured and coloured phenolics and sensorial analysis indicate that their specificity and selectivity regarding off-flavours still needs to be improved.
authors.affiliation: REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
authors.forename: Rafaela
authors.initials: R
authors.lastname: Teixeira
authors.affiliation: Grupo de Polímeros, Centro de Investigacións Tecnológicas (CIT), Universidade de A Coruña, Campus de Esteiros/n, 15403 Ferrol, Spain.
authors.forename: Sonia
authors.initials: S
authors.lastname: Dopico-García
authors.affiliation: REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
authors.forename: Paula B
authors.initials: PB
authors.lastname: Andrade
authors.affiliation: REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Valentão
authors.affiliation: Grupo de Polímeros, Centro de Investigacións Tecnológicas (CIT), Universidade de A Coruña, Campus de Esteiros/n, 15403 Ferrol, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: López-Vilariño
authors.affiliation: Grupo de Polímeros, Centro de Investigacións Tecnológicas (CIT), Universidade de A Coruña, Campus de Esteiros/n, 15403 Ferrol, Spain.
authors.forename: Victoria
authors.initials: V
authors.lastname: González-Rodríguez
authors.affiliation: Grupo de Polímeros, Centro de Investigacións Tecnológicas (CIT), Universidade de A Coruña, Campus de Esteiros/n, 15403 Ferrol, Spain.
authors.forename: Concepción
authors.initials: C
authors.lastname: Cela-Pérez
authors.affiliation: REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal ; Escola Superior de Saúde Dr Lopes Dias' Avenida do Empresário, Campus da Talagueira, 6000-767 Castelo Branco, Portugal ; LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
authors.forename: Luís R
authors.initials: LR
authors.lastname: Silva
keywords: Molecular imprinted polymers; Phenolic compounds; Volatile phenols; Wine