Abstract: The SOD-like activities of SOD, four Cu(II) Complexes, SOD-and Cu(II) com-plex-liposomes were determined respectively by using cytochrome C method. The results showed that all of these systems had SOD-like activities to some extent of which the Cu(His)2-liposome displayed the highest activity and the Cu(II) complexes and liposomes had some positive cooperative action.

Key words: Superoxide radical, Cu(II) Complexes, Liposome