大量历史档案被洪水严重破坏,在福岛的台风哈吉比斯之后，Japan,2019年10月。他们在一周内从灾区获救，然而,纸质文件长时间暴露在水中会导致真菌生长导致严重的生物降解。为了消毒真菌，纸质文件暴露于工业辐照服务由钴60源发出的伽马辐射。湿纸文件主要被亲水性和纤维素分解真菌污染，包括木霉,Stachybotrys,和镰刀菌；辐照后没有真菌生长。这些结果表明，从13.1kGy到16.1kGy的平均吸收剂量足以对被真菌严重污染的纸质文件进行消毒。在本研究中,我们证明了使用商业伽马射线辐照设施在真菌损坏的纸质文件中成功地实际使用辐照。
A large volume of historical archives was extensively damaged by flood water, following Typhoon Hagibis in Fukushima, Japan, in October 2019. They were rescued from the stricken area within a week, however, the prolonged exposure of paper documents to water caused severe biodegradation by fungal growth. To disinfect fungi, the paper documents were exposed to gamma radiations emitted by a source of Cobalt 60 by the industrial irradiation service. The wet paper documents were mainly contaminated with hydrophilic and cellulolytic fungi, including Trichoderma, Stachybotrys, and Fusarium; no fungi grew after irradiation. These results indicated that the average absorbed dosage from 13.1 kGy to 16.1 kGy were sufficient to disinfect paper documents heavily contaminated with fungi. In the present study, we demonstrated the successful practical use of irradiation in fungi-damaged paper documents using a commercial gamma-irradiation facility.
