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    STUDIA CHEMIA - Issue no. 4, Tom I / 2017  
         
  Article:   CATECHIN OXIDATION PRODUCTS: MECHANISTIC ASPECTS AND KINETICS.

Authors:  ANCA-RUXANDRA LEONTIEŞ, ADINA RĂDUCAN, IOANA CATALINA GÎFU, DAN FLORIN ANGHEL. 		 
       
         
  Abstract:  The oxidation of catechin in the presence of atmospheric oxygen in a methanol/buffer model solution was studied by investigating generated products using LC/MS and spectrophotometry. It was proved that catechin was slowly converted to dimeric species with similar structures and properties. The catechin autoxidation was investigated spectrophotometrically at different pH ranging between 5 and 10. Using the initial linear dependence of the kinetic curves [Dimers] = f(t) the initial reaction rates were estimated for the autoxidation of catechin in methanol/buffered solutions. It was found that the dimer formation is favored at pH 8.

Keywords: catechin, autoxidation, dehydrocatechin 		 
         
     
         
         
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