强激光与粒子束2025，Vol.37Issue(6)：171-178,8.DOI:10.11884/HPLPB202537.240229
脉冲氙灯处理大肠杆菌的实验研究
Experimental study on Escherichia coli treatment by pulsed xenon lamp
张勇 1刘振 1朱瑞瑜 2闫克平1
作者信息
- 1. 浙江大学化学工程与生物工程学院,杭州 310058
- 2. 浙江科技大学,生物与化学工程学院,杭州 310023
- 折叠
摘要
Abstract
To optimize the performance of the pulsed xenon lamp sterilization device,the influence of spectral range and specifications of lamps on the sterilization effect is studied based on a self-developed high-energy microsecond pulse power supply and xenon lamps with different specifications.The results show that in the UV-visible spectrum of a xenon lamp with an arc length of 50 mm and a pressure of 50 kPa,the UV accounts for 38.5%and the UVC accounts for 17.6%.Increasing the arc length and decreasing the pressure can both increase the spectral intensity,and the latter can also increase the ratio of UV.The xenon lamp with an arc length of 100 mm and a pressure of 50 kPa can basically inactivate all Escherichia coli in 3 s with a discharge energy of 20 J.The sterilization rate is positively correlated with arc length and discharge energy of the lamp,negatively correlated with pressure.All bands of xenon lamp radiation have sterilization effects,with UV accounting for 87.7%in log value and the wavelength band less than 280 nm accounting for 64.6%.The AFM images show that pulsed xenon lamp changed the morphology and mechanical properties of Escherichia coli,hence the bacteria shrank,their surface roughness,elasticity,and adhesion increased.关键词
脉冲氙灯/表面灭菌/脉冲放电/脉冲强光/大肠杆菌Key words
pulsed xenon lamp/surface sterilization/pulse discharge/intense pulsed light/Escherichia coli分类
医药卫生引用本文复制引用
张勇,刘振,朱瑞瑜,闫克平..脉冲氙灯处理大肠杆菌的实验研究[J].强激光与粒子束,2025,37(6):171-178,8.
