Electrochemical behavior of capsaicin and its anti-oxidative properties studied by means of cyclic voltammetry

Maksimova, Viktorija and Gulaboski, Rubin and Koleva Gudeva, Liljana and Naumova, Galaba and Jancovska, Maja and Mirceski, Valentin (2014) Electrochemical behavior of capsaicin and its anti-oxidative properties studied by means of cyclic voltammetry. In: MatCatNet Workshop "From molcules to functionalised materials", 5-10 Sept 2014, Ohrid Macedonia.

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Abstract

The major aim of this work is to study the electrochemical behavior and antioxidative features of the plant derived anti-oxidant capsaicin. The antioxidant activity and the redox behavior of this compound were investigated by means of cyclic voltammetry at a glassy carbon electrode. Stock solution of capsaicin was prepared in 96% ethanol, and diluted to different concentrations (10, 100, 150, 200, 250, 300 μmol/L). The anodic oxidation behavior of capsaicin and its catalytic (regenerative) effect on the reduction of Ferric to Ferrous ion were investigated in different pH values (3,5; 5,5; 7 and 10) and different scan rates (5 to 100 mV/s). For a comparison of the anti-oxidative properties of capsaicin, voltammetric experiments with vitamin C (100, 200, 300, 400, 500 μmol/L) were also conducted in the same experimental conditions using cyclic voltammetry (CV). Results showed that in acetic buffer with pH=3,6 capsaicin is generating the highest anodic currents Ia, and shows well defined voltamograms. The electrochemical characterization under different conditions is a promising tool to understand the redox behavior of these alkaloids found in Capsicum sp. and only several studies are reported on the electrochemical properties of capsaicin. Therefore, these results can contribute to development of a new method for a rapid estimation of capsaicin and its anti-oxidative properties by fast and simple technique as cyclic voltammetry.

Item Type: Conference or Workshop Item (Poster)
Uncontrolled Keywords: capsaicin, antioxidant, electrochemical, redox potential, voltammetry.
Subjects: Natural sciences > Chemical sciences
Medical and Health Sciences > Other medical sciences
Divisions: Faculty of Medical Science
Depositing User: Viktorija Maksimova
Date Deposited: 30 Sep 2014 13:09
Last Modified: 30 Sep 2014 13:09
URI: http://eprints.ugd.edu.mk/id/eprint/10991

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