Electrochemical Oxidation of Caffeic and Ferulic Acid Derivatives in Aprotic Medium

Journal of the Brazilian Chemical Society

Magali Salas-reyes²  Javier Hernández²  Zaira Domínguez²  Felipe J. González¹  Pablo D. Astudillo¹  Rosa Elena Navarro¹  Evelin Martínez-benavidez¹  Carlos Velázquez-contreras¹  Samuel Cruz-sánchez¹ 

[1] ,Universidad Veracruzana,México

关键词: cyclic voltammetry;    hydroxycinnamic acids;    caffeic acid phenethyl ester;    antioxidant activity;    DPPH radical;   

DOI  :  10.1590/S0103-50532011000400012

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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