Optimization of bacteria-reducing of oyster by ozone combined with slightly acidic electrolytic water

Abstract In this paper, oysters were treated with ozone purification, and then the response surface methodology (RSM) was used to optimize the bacteria-reducing process with slightly acidic electrolytic water (SAEW) based on total viable counts (TVC). The factors affecting the sterilization effect were the available chlorine concentration (ACC) > soaking time > solid-liquid ratio. The optimization results showed that the best effect was obtained by soaking the oyster in SEAW with effective chlorine concentration of 30 mg/L and solid-liquid ratio of 1:3 for 13 min after purification 9 h. The total colony of oyster decreased by 0.84 lgCFU/g under this condition.