摘要
目的:探讨恒定磁场的杀菌作用及其影响因素。方法:选用大肠杆菌8099标准株为 试验菌株,配制成一定菌密度的模拟水样,分别控温在5℃、15℃、35℃3个水平。以滤膜荧光法定量 检测:菌密度随时间的自然变化及经磁处理水样菌密度随时间的变化。结果:无磁处理,3种温度下 菌密度随时间延长均呈下降趋势,符合负指数函数关系:y=ae-bt。5℃下磁场的杀菌作用不显著, 15℃及35℃下,恒定磁场有较显著的杀菌作用。结论:恒定磁场的杀菌作用与菌株特征、环境温度及 处理时间关系密切。
Objective:To explore the sterile effect and influence factor of stable-magnetic field. Methods:The standard strain of 8099 of Escherichia coli was used to prepare the water sample .The densities of strain of 8099 of Escherichia coli were determined by filter membrane fluorometry at 5℃、15℃ and 35℃ in order to detect the changes of bacteria density without the stable-magnetic field and the changes of bacteria density with the stable-magnetic field. Results: The bacteria density was found decreased without the stable-magnetic field at temperature of 5℃、15℃ and 35℃.It meets negative exponential function:y=ae -bt . The sterile effect of stable-magnetic field was inapparent at 5℃,but it's notable at 15℃ and 35℃ . Conclusion: The sterile effect of stable- magnetic field was closely associated with the strain characteristics,environment temperatures and disposal time.
出处
《江苏预防医学》
CAS
2004年第4期3-5,共3页
Jiangsu Journal of Preventive Medicine
关键词
恒定磁场
杀菌
影响因素
stable- magnetic field
sterile
affect factor
