响应面法优化脉冲强光杀灭干豆腐大肠杆菌条件的研究

Study on optimization of pulsed light sterilization conditions of E.coli from dry bean curd using response surface methodology

摘要: 采用响应面法对影响脉冲强光杀灭干豆腐大肠杆菌效果的因素进行研究,得出影响大肠杆菌灭菌率的顺序为:照射时间>脉冲强光能量>照射距离;最佳灭菌条件为:脉冲强光能量300J,照射距离10cm,照射时间15s,此条件下的灭菌率可达98.29%。

Abstract: Response surface methodology was used to analyze factors which influence the effect of E.coli sterilization using pulsed light on dry bean curd. The effect of sterilization in E.coli was irradiation time>pulsed light energy>irradiation distance. The optimum conditions obtained were as follows:pulsed light energy 300 J, irradiation distance 10 cm and irradiation time 15 s. The sterilization rate could reach 98.29% under these conditions.