[The mutagenic and modifying properties of new gelatinous substances studied by using the Ames test].

Mutagenic activities of new gel-forming substances proposed for the use in pharmacy and food industry were studied by the method of scoring mutations in test microorganisms. Sodium carboxy-methyl starch and sodium carboxy-methyl-cellulose did not induce gene mutations in Salmonella typhimurium TA 98 and TA 100.