[Photochemoluminescence of tryptophan-containing peptides and proteins during photooxidation. VI. Kinetic patterns of eosin sensitized photochemoluminescence of solutions of human serum albumin].

Regulariteis of sensitized photochemoluminescence of serum albumine solutions have been studied. The dependence of luminescence intensity on the dye cancentration is of an extremal character; at low concentrations it is determined by the Lambert--Beer law; at high concentrations quenching processes proceed. The shape of kinetic curves of after-luminescence and rise of luminescence is studied. Photochemoluminescence intensity is in a direct proportion to the irradiation intensity. Luminescence is found to be determined by the photodissociation of triptophanile groups of protein. On the basis of experimental and calculated data it is concluded that during sensitization the secondary processes are similar those which proceed under UV-irradiation; the differences lie in the primary processes of the free radical formation.