Effect of alpha cypermethrin and deltamethrin pesticides on catalase activity

From 0 ppm to 500 ppm with increasing deltamethrin and alpha cypermethrin pesticides concentrations, bovine liver catalase (CAT) activity were inhibited. Under the exposure of 10, 25, 100, 250 and 500 ppm deltamethrin concentrations, percent of CAT enzyme activity decreases were calculated as 7,3; 16,9; 25,5; 40,7 and 62,7 respectively. Under the exposure of 10, 25, 100, 250 and 500 ppm alpha cypermethrin concentrations, percent of CAT enzyme activity decreases were calculated as 2,3; 3,0; 10,2; 13,8 and 16,3 respectively. Deltamethrin and alpha cypermethrin inhibited CAT non-competitively. KeyWords: Deltamethrin, Alpha cypermethrin, Inhibition, Pesticide and Catalase.