A5017603291- Advanced Cellulose Research Studies
- Lignin and Wood Chemistry
- Wood Treatment and Properties
- Plant and Biological Electrophysiology Studies
- Slime Mold and Myxomycetes Research
- Planarian Biology and Electrostimulation
- Light effects on plants
- Electrospun Nanofibers in Biomedical Applications
- Advanced Materials and Mechanics
Aalto University
2023
University of Helsinki
2021-2023
The University of Tokyo
2016-2023
The mycelium composites composed of fungal and plant substrate are a practical alternative to petroleum plastic-based foam materials. However, the effects physiological traits fungus on composites' microscopic structure mechanical properties remain poorly understood. Here, we compared two basidiomycetes with distinct morphology white-decay modes. Cross-sectional observation revealed that possess core/shell shell formed dense aerial core particles spongy mycelium. Dense continuous networks...
The ultrastructural transformation of wood cellulose crystals by hydrothermal treatment was followed synchrotron and standard X-ray scattering experiments. When treated at 200 °C for 2 h in the presence an excess water, a significant sharpening equatorial reflections crystalline observed, average crystallite size, estimated from line broadening, twice as large that untreated cellulose. During treatment, structure converted native monoclinic form I into pseudo-orthorhombic system, coined I',...
Abstract Hydrothermal treatment between 150 °C and 230 is widely used in wood processing, from the steam of timber for better dimensional stability durability to pretreatment enzymatic saccharification chemical pulping. Understanding ultrastructural changes cell walls through hydrothermal treatments crucial controlling optimizing these treatment-based processes. Here, we studied ultrastructure 24 hardwood species using simultaneous small- wide-angle X-ray scattering measurements before after...
Mycelium-based materials have attracted growing interest, facilitating their development for various new applications. Finding suitable fungal species and strains enables further technical breakthroughs in quality control. Here, we developed a model solid-state culture system to screen efficiently mycelium-based production. A piece of silicone-coated paper set on the general agar plate allows isolation mycelial mat from substrate. The growth density can be evaluated by weighing mat. We used...
20種の広葉樹気乾材を飽水状態にし，200 ℃，2時間の水熱処理による構造変化をX線回折により調べた。光学顕微鏡観察でハリギリ，エノキ試料は，あて材の特徴を示したが，他18試料は正常材であった。水熱処理後は全ての試料で1 1 0と1 0の回折が接近し，多くの場合で擬直方晶への変化がみられ，X線結晶サイズ（2 0 0）は著しく増大した。これらの変化はヘミセルロースの溶出を伴う隣り合うミクロフィブリルの共結晶化によるものと考えられる。17樹種の試料では，水熱処理により2 0の面間隔が0.8-1.6%減少したが，ハリギリでは0.5%減少し，カキノキ，エノキでは殆ど変化しなかった。これら3試料は，他の17試料に比べ未処理での2 0の面間隔が小さく，結晶サイズが大きかった。さらに固体13C NMRによる結晶性セルロース含有量は他試料より高かった。