中性氧化电位水的制备和高效杀菌作用

Preparation and sterilizing effect of neutral electrolyzed oxidizing water

利用离子膜电解槽制备了一种新型消毒剂——中性氧化电位水(NEOW),研究了阴、阳极体积比、电解时间和电流密度对NEOW性能的影响,确定最佳工艺条件为阴、阳极体积为0.33～0.50,电解时间为5～25 min和电流密度为20～50mA/cm2。在此基础上,设计连续式中性氧化电位水生成机新工艺,可以高效制备出NEOW。此外,还研究了NEOW对枯草杆菌黑色变种芽孢(ATCC9372)和大肠杆菌(8099)的杀菌效果。结果表明,当杀菌时间为1 min时,对大肠杆菌的杀灭对数值大于8.34 lgCFU/mL;杀菌时间为25 min时,对枯草杆菌黑色变种芽孢的杀灭对数值为4.10 lgCFU/mL。所以,NEOW是一种高效、快速、环保的新型消毒剂,其pH接近中性,可以减少对金属的腐蚀,能更广泛应用在医药和食品等行业中。

The new disinfector-neutral electrolyzed oxidizing water （NEOW） is prepared using new anion exchange membrane cell. The effects of the volume ratio of the cathode and anode cell, electrolytic time and current density on the preparation technology of NEOW are investigated. The results show that the best technology is 0. 33 - 0. 50 of the volume ratio,the electrolytic time is 5 - 25 min and the current density is 20 - 50 mA. cm^-2. A new continuous preparing process of NEOW is designed, which can effectively produce NEOW. Sterilizing effect of NEOW for Bacillus subtilis var. niger （ATCC 9372 ） and Eseherichia coli （8099） are studied in this paper. The killing logarithm value of NEOW for Escherichia coli is 8.34 lgCFU/mL in 1 min and for Bacillus subtilis var. niger is 4. 10 lgCFU/mL in 25 min. It indicates that the sterilizing effect of NEOW is efficient and quick. It will decrease the corrosion of metal and be applied widely in medicine and food industry because of its neutral pH.