Response surface methodology for optimization of sterilization effect on tilapia fillet with slightly acidic electrolyzed water

In order to study the sterilization effect of fresh tilapia fillets with slightly acidic electrolyzed water, the single factor and response surface experiment were adopted to establish the mathematical model between the factors and response values, and the best sterilization conditions were determined. The results show that the best bactericidal condition was 35.00 mg·L^–1 of available chlorine concentration, 22 min for soaking time and 1∶6 (m∶V ). Under this condition, the killing logarithm value of bacterial colony was (0.735±0.001) lg (CFU·g^–1), and the bactericidal rate was (81.59±0.04)%.