Sisti M, Schiavano G F, Santi M DE, Brandi G
Department of Biomolecular Sciences, Hygiene Section, University of Urbino Carlo Bo, Italy.
J Prev Med Hyg. 2017 Dec 30;58(4):E315-E319. doi: 10.15167/2421-4248/jpmh2017.58.4.777. eCollection 2017 Dec.
We investigated the effect of ultraviolet germicidal irradiation (UVI) from a low-pressure mercury lamp on several pathogenic Aspergillus spp. including A. flavipes, A. flavus, A. fumigatus, A. glaucus, A. nidulans, A. niger, A. terreus, A. ustus and A. versicolor suspended in tap water under laboratory-scale conditions. It was shown that within 10 s of exposure, time species such as A. glaucus, A. niudulans and A. ustus were completely inactivated, while 40 s were needed for the elimination of all the species tested. A. flavus and A. niger were found to be less susceptible than other species. Based on these results we conclude that UV disinfection could effectively inactivate Aspergillus spp. in tap water. Such disinfection could be used to reduce potential exposure of high-risk patients to fungal aerosols, particularly in hospital settings, where point-of-use (POU) UV light devices could be installed to provide safe water at a very low cost.
我们在实验室规模条件下，研究了来自低压汞灯的紫外线杀菌辐照（UVI）对几种致病性曲霉属真菌的影响，这些真菌包括悬于自来水中的黄柄曲霉、黄曲霉、烟曲霉、灰绿曲霉、构巢曲霉、黑曲霉、土曲霉、焦曲霉和杂色曲霉。结果表明，暴露10秒内，灰绿曲霉、构巢曲霉和焦曲霉等菌种被完全灭活，而消除所有测试菌种则需要40秒。发现黄曲霉和黑曲霉比其他菌种更不易被灭活。基于这些结果，我们得出结论，紫外线消毒可有效灭活自来水中的曲霉属真菌。这种消毒可用于减少高危患者暴露于真菌气溶胶的潜在风险，特别是在医院环境中，可安装使用点（POU）紫外线灯装置，以非常低的成本提供安全的水。
