Catalytic Catechin

Comparative study on the products obtained by the peroxidase-catalyzed and PPO-catalyzed oxidative couphng of catechin was reported [43]. Both enzymes produced the similar products. In the PPO-catalyzed oxidation, catechin was almost consumed, and the ohgomers were mainly formed. On the other hand, a significant amount of catechin remained, and the amount of oligomer fractions was small when peroxidase was used as a catalyst. The low catalytic activity of peroxidase may be due to the inhibition of the enzyme by the resulting products. 

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