Regeneration of Protein from Insoluble Protein-Tannin Compounds

THE aims of the present studies were : (1) application of tannin to precipitation of different proteins ; (2) removal of tannin from the insoluble protein-tannin compounds by the use of caffeine ; (3) examination of some physico-chemical and biological properties of proteins after the regeneration process. The following proteins have been examined : gelatine, haemoglobin, lysozyme, aldolase from rabbit muscle, potato proteins and proteins of normal biological human fluids.