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2021 Fiscal Year Final Research Report

Molecular mechanisms of wood cell wall focusing on the nano-composite feature of the components

Research Project

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Project/Area Number 19H03019
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 40020:Wood science-related
Research InstitutionKyoto University

Principal Investigator

Kawamoto Haruo  京都大学, エネルギー科学研究科, 教授 (80224864)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsバイオマス / 熱分解 / 分子機構 / 細胞壁 / ナノ集積構造 / ウロン酸 / 針葉樹と広葉樹の違い / リグニンの作用
Outline of Final Research Achievements

Wood cell wall has a nano-composite structure in which crystalline cellulose microfibrils penetrate in the fiber direction and hemicellulose and lignin (both are collectively called a matrix) surround it. In this study, we found that the reactivity of cellulose and hemicellulose in the cell wall was changed compared to the isolated component, and the effect was different between Japanese cedar (softwood) and Japanese beech (hardwood). Furthermore, due to the difference in pyrolysis reactivity, different nano-composite structures have been newly proposed for these two-wood species.

Free Research Field

木材化学、バイオマス科学

Academic Significance and Societal Importance of the Research Achievements

熱処理は木材の一つの加工技術である。また、化石資源の代替を目指した木質バイオマスの熱分解やガス化技術が注目されている。本研究により、細胞壁のナノ集積構造が構成成分の熱分解反応性に大きく影響していることが明らかになり、熱分解反応性の視点から細胞壁のナノ集積構造を提案できることも示された。これらの知見は、木材科学の分野に新たな視点を提供するとともに、社会的には木材の利用促進による将来の持続可能な低炭素社会の構築に寄与する。

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Published: 2023-01-30  

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