Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 110, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.msec.2020.110667
Keywords
Molecular imprinted polymer; Voltammetric sensor; Catechol; Chitosan; BDD electrode
Categories
Funding
- Plan Nacional Ministerio de Ciencia e Innovacion [RTI2018-097990-B-100]
- Junta de Castilla y Leon [VA275P18]
- FEDER [VA275P18]
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Phenolic compounds such as catechol are present in a wide variety of foods and beverages; they are of great importance due to their antioxidant properties. Their consumption protects against the development of certain diseases such as cancer and cardiovascular diseases. A MIP chitosan (CS) film has been electrodeposited on a boron doped diamond (BDD) electrode, by chronoamperommetry in the presence of catechol, followed by elution with 0.1 M KCl. The morphology of the MIP and non-MIP (NIP) film has been studied by AFM. The electrochemical response of the sensor analyzed by cyclic voltammetry (CV) indicates that the sensor shows excellent reproducibility (RSD = 4.1%) and repeatability (RSD = 7.0%) for catechol detection in the range of 0 to 80 mu M, with a detection limit of 6.9 x 10(-7) M and high selectivity to catechol recognition versus different phenolic compounds. The results obtained in a red wine show that it can detect catechol in a complex matrix.
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