Electrochemical oxidation of caffeic and ferulic acid derivatives in aprotic medium

Magali Salas-Reyes*, Javier Hernández, Zaira Domínguez, Felipe J. González, Pablo D. Astudillo, Rosa Elena Navarro, Evelin Martínez-Benavidez, Carlos Velázquez-Contreras, Samuel Cruz-Sánchez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We studied the electrochemical behaviour as a function of the structure of a series of caffeic and ferulic acids derivatives as well as their corresponding redox moieties catechol and guaiacol by cyclic voltammetry. Results revealed that the medium is key for changes in the oxidation mechanism of guaiacol and ferulic acid. Electrochemical oxidation of the ferulic acid amide derivatives revealed that the nitrogen atom plays an important role in the derivatization of the electrode surface. In addition, radical scavenging activity of the compounds evaluated through the percentage of inhibition of the 2,2'-diphenyl-1-picrylhidrazyl radical showed a good relationship with the oxidation potentials.

Original languageEnglish
Pages (from-to)693-701
Number of pages9
JournalJournal of the Brazilian Chemical Society
Volume22
Issue number4
DOIs
StatePublished - 2011

Keywords

  • Antioxidant activity
  • Caffeic acid phenethyl ester
  • Cyclic voltammetry
  • DPPH radical
  • Hydroxycinnamic acids

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