The Mitsui & Co. Environment Fund

Introduction to Grant Projects

Nature Center Risen, Vice chief director Toshiharu Enomae

The development of simple desalination techniques and use of salt on paper-based cultural assets damaged by the tsunami disaster

Research grant

Project Description

Cultural assets made of organic matter, such as wood, textiles, paper and photographs suffered a great amount of damage from the tsunami, and countermeasures against bio deterioration (mould) are urgent. Aiming for the salvation of paper-based cultural assets, a method developed by our organization was carried out. The "salt water treatment method" is a salt water application method for emergency treatment of paper items, and suppression of the occurrence of mould could be clearly seen with a salt concentration of 3.5%. Specifically, not only are experimental research level tests being considered, but collaboration with local paper and book conservationists in areas afflicted by the disaster, which is helping to take into consideration damage which can be incurred through handling.

Grant year
FY2011 Research Grants
Grant term
2 years and 6 months
April 2011 - September 2013
Grant amount
3,800,000 yen
Activity region
Tokyo; Iwate Prefecture, Ofunato City, Japan
As salt concentration increased, the cellulose substrate bacteria cultivation T.Reese was suppressed

Overview of the Organization

Toshiharu Enomae, Vice Chief director
Toshiharu Enomae, Vice Chief director
Specialist field
The University of Tokyo Biomaterial Sciences, Historiographical Institute
Affiliated academic societies
Japan Tappi; Japan Technical Association of the Pulp and Paper Industry, Japan Society of Printing Sci. and Technology, The Japan Wood Research Society
In 1987, became an Associate at Faculty of Agriculture, University of Tokyo. Went on to become an Associate Professor at the University of Tokyo Graduate School of Agricultural Life Sciences. In 2012, became a Doctor at the University of Tsukuba's Graduate School of Life and Environmental Sciences
WEB site
Collaborating researchers
Meisei University Program in Environmental System Engineering, Ecology Department, Professor Yoshizawa Shuji, NPO Nature Center Risen, Board Chairman, Iwama Michiko, University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, Igarashi Kiyohiko
Research record
  • (1) Toujima Kenta,, "Development of emergency storage procedures used for paper-based cultural assets damaged by the tsunami," A Summary of the 78th Pulp and Paper Research Conference (2011)
  • (2) EBIMA Toshiharu,"An estimated analysis of fiber orientation of the paper making techniques of the Daitokuji temple document," Japan Society for Archaeological Information magazine, issue 17(1), 1-7(2011).
  • (3) EBIMA Toshiharu et. al, "Looking at both sides of medieval Daitokuji temple washi documents and the customs of letters,"The Japan Society for Historical Studies Journal, Edition 579, 57-72(2010).
  • (4) Enomae, T., Han, Y.-H., Isogai, A., Hotate, M., Hasegawa, S., "Mechanisms of perception of laid lines in Japanese paper", Journal of Wood Science, 56(5), 395-402(2010).
  • (5) Enomae, T., Han, Y.-H., Isogai, A., "Z-Directional distribution of fiber orientation of Japanese and western papers determined by confocal laser scanning microscopy", Journal of Wood Science, 54(4), 300-307 (2008).
  • (6) Han, Y.-H., Enomae, T., Isogai, A., Yamamoto, H., Hasegawa, S., Song, J.-J., and Jang, S.-W., "Traditional papermaking Techniques revealed by fiber orientation in historical papers", Studies in conservation 52(4): 267-276(2006).
  • (7) Enomae, T., Han, Y.-H., and Isogai, A., "Nondestructive determination of fiber orientation distribution of fiber surface by image analysis", Nordic Pulp and Paper Research Journal 21(2): 253-259(2006).