Information has been obtained concerning photooxidation rate of 18 proteins, blood plasma, glycyl triptophane and some amino acids under UV-irradiation. It has been shown that the majority of the objects studied have the quantum yields of oxygen absorption in the range 0.2--0.6%. Photochemoluminescence of proteins was also investigated. It has been found that protein photochemoluminescence characteristics differ significantly, their main differences are concerned with intramolecular reaction of peroxide free radicals responsible for chemoluminescence with protein acceptors.
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Kinetic study of eosin-sensitized photochemoluminescence (PCL) in tripsin solutions was carried out. Kinetics of luminescence increase and decrease, connection between sensitized PCL with triptophane photodissociation in protein were investigated. Effect of the concentrations of protein and oxygen in solution on the parameters of eosin-sensitized PCL was studied in order to establish the succession of processes resulting in the formation of free radicals.
View Article and Find Full Text PDFInformation has been obtained concerning photooxidation rate of 18 proteins, blood plasma, glycyl triptophane and some amino acids under UV-irradiation. It has been shown that the majority of the objects studied have the quantum yields of oxygen absorption in the range 0.2--0.
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