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    STUDIA CHEMIA - Issue no. Special%20Issue%201 / 2009  
         
  Article:   THE ELECTROCHEMICAL BEHAVIOR OF SOME BERRIES EXTRACTS.

Authors:  MARIANA NELA ŞTEFĂNUŢ. 		 
       
         
  Abstract:  In this paper, cyclic voltammetry was used as method to estimate the antioxidant activity of anthocyanins extracts from frozen fruits of some berries. Extraction in methanol for four types of indigene berries, Ribes nigrum L., Ribes rubrum L., Vaccinium myrtillus L., Prunus spinosa L. and Rubus fruticosus L., have been made. The voltammograms were recorded at room temperature. Some information on the electrochemical properties of the extracts could be provided by comparing the oxidation potentials at different pH values. The antioxidant capacities of the extracts were also evaluated by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging method and correlated with their oxidation potentials.

Keywords: anthocyanins, antioxidant activity, cyclic voltammetry, DPPH
  
         
     
         
         
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