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. 1977 Oct;32(4):351-9.
doi: 10.1080/09553007714551101.

Effects of 60Co gamma-irradiation on chondromucoprotein

H E Edwards, J S Moore, G O Phillips

Effects of 60Co gamma-irradiation on chondromucoprotein

H E Edwards et al. Int J Radiat Biol Relat Stud Phys Chem Med. 1977 Oct.

Abstract

Pulse radiolysis and 60Co gamma-radiolysis have been used to study the effects of ionizing radiations on the protein-polysaccharide complex, chondromucoprotein. Both hydroxyl radicals and hydrated electrons readily react with the complex, with second-order rate-constants of 4-55 X 10(8)M-1s-1, respectively. Depolymerization of the carbohydrate component, which is initiated by reaction of OH, readily occurs after irradiation in aqueous solution, as is evidenced by an increase in the formation of reducing-end groups and a decrease in the viscosity of the solution. The ability of the anionic carbohydrate component to bind cationic counter-ions also decreases.

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