In this work, leaves of matricaria ineora, as a medicinal plant, were dried at shadow and at room temperature. The 3.0 g powdered leaves of the plant were macerated with 50 mL of ethanol:water (20:80) for 24 h and sonicated for 12 min. The extracts were filtered using filter paper.
The voltammograms were obtained for electrochemical oxidation of antioxidant compounds on the bare and modified electrodes in two separate experiments in buffer solution (pH 7.2). It have been compared the cyclic voltammograms of matricaria ineora extract at a bare and single-walled carbon nanotube (SWCNT) modified glassy carbon electrodes. The cyclic voltammetric responses for electrochemical oxidation of extract on the bare electrode containing one pair redox peak and modified electrode containing two pair redox peaks at 100 mV/s. The peak current increased significantly on the SWNTs modified electrode as compared with the bare electrode. The electrode surface modification with SWCNTs augmented its effective surface area and the oxidation currents of antioxidants. The first redox peaks are related to compounds which also were oxidized on the bare glassy carbon electrode. Second peaks are related to compounds which cannot oxidize on the bare electrode but due to nanotubes electrocatalysis property oxidized them on the modified electrode.
- H. Benmehdi, O. Hasnaoui, O. Benali, F. Salhi, J. Mater. Environ. Sci. 3 (2012) 320-237.
- O. Maschi, E. Dal Cero, G.V. Galli, D. Caruso, E. Bosisio, M. Agli, J. Agric. Food Chem. 56 (2008) 5015-5020.
- A. Ghorbani, B. Gravendeel, S. Selliah, S. Zarreo, H. de Boer, Mol. Ecol. Resour. (2016) doi:10.1111/1755-0998.12615
- L. Barros, L. Cabrita, M.V. Boas, A.M. Carvalho, I. Ferreira, Food Chem. 127 (2011) 1600-1608.
- L. Campanella, E. Martini, M. Tomassetti, Talanta 66 (2005) 902-911.