| Project/Area Number |
26450244
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Wood science
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| Research Institution | Forest Research and Management Organization |
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Principal Investigator |
YAMASHITA Kana 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (60353900)
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| Co-Investigator(Kenkyū-buntansha) |
片山 義博 日本大学, 生物資源科学部, 教授 (10214339)
久保島 吉貴 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 (40353669)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 細胞壁微細構造 / 粘弾性 / ヘミセルロース / グルコマンナン / ガラクトグルコマンナン / アラビノグルクロノキシラン / スギ / 細胞壁構造 / 細胞壁 |
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| Outline of Final Research Achievements |
In order to clarify the cell wall microstructure affecting wood quality, hemicellulose structure and its assembly with cellulose were studied using earlywood (EW) and latewood (LW), and air-dry wood and heat-treated wood for Japanese cedar. Glucomannnan/galactoglucomannan (GM/GGM) and Arabino-4-o-methylglucuronoxylan (AGX) were isolated. The differences between EW and LW were small in chemical components, sugar compositions, and GM/GGM structure. The side-chain substitution and chain-length composition of AGX were higher in LW. The elution analysis suggested that there were more hemicellulose forming strong hydrogen bonds in LW. Therefore, it was suggested that highly assembled hemicellulose would form stronger framework in LW. In the heat-treated wood, chain-length of AGX became shorter than the air-dry wood. Breaking down of cellulose microfibril structure were observed. Those changes in the cell wall microstructure might decrease the viscosity of wood.
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