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Anatomical and Topochemical Aspects of Japanese beech (Fagus crenata) Cell Walls After Treatment with the Ionic Liquid, 1-Ethylpyridinium Bromide

Published online by Cambridge University Press:  16 October 2015

Toru Kanbayashi  and
Hisashi Miyafuji
Toru Kanbayashi
Affiliation:
Division of Environmental Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
Hisashi Miyafuji*
Affiliation:
Division of Environmental Sciences, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Hangi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
*
*Corresponding author. miyafuji@kpu.ac.jp
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Abstract

Changes in the ultrastructure and chemical components, and their distribution in Japanese beech (Fagus crenata), during the ionic liquid 1-ethylpyridinium bromide ([EtPy][Br]) treatment were examined at the cellular level by light microscopy, scanning electron microscopy, and confocal Raman microscopy. Each of the tissues, including wood fibers, vessels and parenchyma cells treated with [EtPy][Br] showed specific morphological characteristics. Furthermore, lignin can be preferentially liquefied and eluted in [EtPy][Br] from the cell walls when compared to polysaccharides. However, the delignification was heterogeneous on the cell walls as lignin maintained a relatively high-concentration at the compound middle lamella, cell corners, inner surface of the secondary wall, and pits after [EtPy][Br] treatment.

Keywords

ionic liquid1-ethylpyridinium bromidecell wallwoodJapanese beech
Type
Biological Applications
Information
Microscopy and Microanalysis , Volume 21 , Issue 6 , December 2015 , pp. 1562 - 1572
Copyright
© Microscopy Society of America 2015 

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