Journal of Conservation Science (보존과학회지)

The Korean Society Of Conservation Science For Cultural Heritage (한국문화재보존과학회)
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Effect of Gamma Radiation on the Microbial Growth and Mechanical Properties of Korean Traditional Paper

방사선 조사가 한국전통한지의 미생물 생장과 기계적 물성에 미치는 영향

  • Choi, Jong-Il (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Yoon, Min-Chul (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Chung, Yong-Jae (Department of Conservation Science, Korean National University of Cultural Heritage) ;
  • Kang, Dai-Ill (Department of Conservation Science, Korean National University of Cultural Heritage) ;
  • Kim, Gwang-Hoon (Department of Life Science, Kongju National University) ;
  • Lee, Ju-Woon (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • Received : 2010.08.19
  • Accepted : 2010.11.17
  • Published : 2010.12.20
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Abstract

The effect of gamma irradiation on the microbial growth inoculated in the Korean traditional paper, Hanji, was investigated. Also, the mechanical properties of Korean traditional paper were measured to verify the possible change by gamma radiation. Bacillus cereus and Aspergillus niger were cultivated and the spores were innoculated in papers at the 250,000 and 500,000 colonies, respectively. In these results, 5log spores of B. cereus could be all inactivated at the dose of 6 kGy, and 5log A. niger be inactivated at 8 kGy, respectively. There was also showed no significant change in tensile strength, bursting strength and color index of Korean traditional paper by the gamma irradiation upto the dose of 50 kGy. These results confirmed that radiation treatment of Korean traditional paper is extremely efficient and could be used to preserve ancient books and archives documents from being damaged by moulds and fungi.

본 연구에서는 전통한지의 생물학적 피해를 야기하는 미생물의 살균 처리를 위한 방사선 기술의 활용 가능성을 확인하였다. 방사선 조사가 한국전통한지에 접종한 미생물의 생장에 미치는 영향을 조사하였으며 방사선 조사에 의한 한국전통한지의 기계적 물성변화에 대하여 측정하였다. Bacillus cereus와 Aspergillus niger를 각각 배양하여 얻어진 포자를 한지에 각각 약 250,000과 500,000 개의 포자를 접종한 후 방사선 선량에 따른 생장률을 확인한 결과, 초기 5 log 갯수의 B. cereus 포자는 6kGy, 5 log의 A. niger 포자는 8kGy에서 불활성화 되었다. 또한 방사선 조사에 따른 한지의 기계적 물성 변화를 확인한 결과, 미생물의 불활성화에 필요한 선량보다 높은 50 kGy의 방사선 조사에도 한지의 유의적인 인장강도, 파열강도 및 색도 변화는 없었다. 이러한 결과들은 곰팡이에 의해 손상 받는 전통 고서들의 보존을 위하여 방사선 조사가 매우 효과적으로 사용될 수 있다는 것을 제시하여 준다.

Keywords

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