[The mutagenic action of radioactive contaminants of feed and food products on strains TA98 and TA100 of Salmonella typhimurium].

Radionuclide-polluted slices of beef (2775 Bq/kg), pork (274.8 Bq/kg), potato (159.0-444.0 Bq/kg), carrot, garden beet, kidney bean and sorrel (44.5-460.0 Bq/kg) have been studied for their mutagenic effect on the tester strains TA98 and TA100 of Salmonella typhimurium and this index as a rule correlates with the level of the slices pollution. On the other hand the slices of cabbage and samples of rye and wheat (46.0-460.0 Bq/kg) as well as fish (2314.0 Bq/kg) had no mutagenic effect on these strains. The samples of milk (230.0-581.5 Bq/1) also did not evoke the increase of mutagenesis level while high concentrations of these preparations (20 mg/ml, and above) manifested toxic effect on the mentioned strains.