1999 Fiscal Year Final Research Report Summary
mprovement of Drying Charactristics of Sugi Wood by Bacteria during Pond Storage
| Project/Area Number |
09306011
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
林産学
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| Research Institution | INSTITUTE OF WOOD TECHNOLOGY, AKITA PREFECTURAL UNIVERSITY (1999)
Akita Prefectural College of Agriculture (1997-1998) |
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Principal Investigator |
KOBAYASHI Yoshinori Akita Prefectural University, Institute of Wood Technology, 木材高度加工研究所, 教授 (00279506)
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| Co-Investigator(Kenkyū-buntansha) |
WAKAI Yasuo Akita Prefectural University, Institute of Wood Technology, 木材高度加工研究所, 助手 (80279512)
YAMAUCHI Hidefumi Akita Prefectural University, Institute of Wood Technology, 木材高度加工研究所, 講師 (90279513)
DOI Shuichi Akita Prefectural University, Institute of Wood Technology, 木材高度加工研究所, 教授 (20279508)
NORIMOTO Misato Kyoto University, Wood Research Institute, 木質科学研究所, 教授 (20027163)
SASAKI Hikaru Akita Prefectural University, Institute of Wood Technology (50027158)
OHTA Shosuke Akita Prefectural University, Institute of Wood Technology
ITO Ryosuke Akita Prefectural University, Institute of Wood Technology (30310171)
MIURA Izumi Akita Prefectural University, Institute of Wood Technology (40279518)
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| Project Period (FY) |
1997 – 1999
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| Keywords | ponding / bacteria / drying characteristics / permeability / anatomical structure / degradation / sugi wood |
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| Research Abstract |
The effects of bacteria attacks on the permeability and drying characteristics of sugi wood were confirmed by subjecting the wood to natural ponding. After the ponding for 6 months the moisture content of sugi log increased higher than 150% not only in the sapwood but also in the heartwood. The bacteria were observed around the pit apertures and on the pit membranes in tracheids or in ray parenchyma cells by SEM. Most of the encrusting substances adhering to the cell lumens and the pit chambers were removed. It suggested that the permeability of the sugi wood would be improved by the ponding. The longer the ponding the faster the drying rate. The improved drying characteristics were observed not only in the red heartwood but also in the black heartwood of sugi wood. The characteristics of strength were not decreased even after 18 months ponding
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