[On mechanism of gelatin-silver halogenide complex decomposition under the effect of Streptomyces Griseus protease]

Ionized carboxylic groups of side chains of gelatin dicarboxylic amino acids form bonds with microcrystals of silver bromide. The cleavage of peptide bonds formed first of all by aspartic and glutaminic acids as well as by glycine when hydrolyzed with Str. griseus protease causes decomposition of the gelatin-silver bromide complex and sedimentation of the latter. The sedimentation contains 56-58% of silver.