Effect of radiation on disinfection and mechanical properties of Korean traditional paper,Hanji |
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| Authors: | Jong-il Choi Yong Jae Chung Dai Ill Kang Kyu Shik Lee Ju-Woon Lee |
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| Institution: | 1. Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 580-185, South Korea;2. Department of Conservation Science, The Korean National University of Cultural Heritage, Chungnam 323-812, South Korea;3. National Research Institute of Cultural Heritage, Daejon 305-380, South Korea;1. Chemistry department, istituto centrale restauro e conservazione patrimonio archivistico e librario, 76, via Milano, 00184 Roma, Italy;2. Dip. Scienze, università Roma Tre, 84, via della Vasca Navale, 00146 Roma, Italy;1. Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská Cesta 21, Bratislava 84551, Slovakia;2. Comenius University Science Park, Ilkovi?ova 8, Bratislava 84104, Slovakia;3. Lodz University of Technology, Faculty of Biotechnology and Food Sciences, Institute of Fermentation Technology and Microbiology, Wólczańska 171/173, ?ód? 90-924, Poland;4. University of Chemistry and Technology, Faculty of Food and Biochemical Technology, Department of Biochemistry and Microbiology, Technická 3, 16628 Prague 6–Dejvice, Czechia;5. Department of Computer Science, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská Dolina, Bratislava 84248, Slovakia;1. Department of Graphic Arts Technology and Applied Photochemistry, Institute of Polymer Materials, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37 Bratislava, Slovak Republic;2. Department of Physical Chemistry, Institute of Physical Chemistry and Chemical Physics, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37 Bratislava, Slovak Republic;1. Institute of Fermentation Technology and Microbiology, Technical University of Lodz, 171/173 Wolczanska St., 90-924 Lodz, Poland;2. Institute of General and Ecological Chemistry, Technical University of Lodz, 116 Zeromskiego St., 90-924 Lodz, Poland;3. Department of Material and Commodity Sciences and Textile Metrology, Technical University of Lodz, 116 Zeromskiego St., 90-924 Lodz, Poland;1. ENEA UTTMAT, Casaccia R.C., Via Anguillarese 301, 00123 S Maria di Galeria, Rome, Italy;2. ENEA UTRINN-IFC, Casaccia R.C., Via Anguillarese 301, 00123 S Maria di Galeria, Rome, Italy;3. Dipartimento di Scienze Fisiche e Chimiche, Università de L''Aquila, Via Vetoio 10, 67010 Coppito, L''Aquila, Italy;4. CNR-IPCF UOS Roma and Dipartimento di Fisica, Università di Roma TRE, Via della Vasca Navale 84, I-00146 Roma, Italy |
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| Abstract: | Fumigants, including methyl bromide and ethylene oxide, are generally used for the preservation of the Korean cultural heritage, especially paper products like letters and books. However, the use of fumigants is banned because of their harmful effects on humans and the environment. Gamma irradiation is being considered as an alternative for the sterilization of insects and fungi in organic products. Therefore, the purpose of this study was to investigate the sterilization effects of radiation and its effect on the mechanical properties of the Korean traditional paper—Hanji. Treatment doses of 9 kGy and 8 kGy of gamma irradiation inactivated 5 log units of Aspergillus niger and Bacillus cereus spores inoculated on Hanji, respectively. The gamma irradiations up to an absorbed dose of 50 kGy resulted in no significant changes in the tensile strength, bursting strength, and appearance of Hanji. These results confirmed that radiation treatment disinfects the Korean traditional paper efficiently without changing its properties and that this treatment could be used to prevent the damage of Korean ancient archives by molds and fungi. |
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