Structural Analysis of Lignins and Hemicelluloses in Mature Bamboo Phyllostachys Bambusoides Culms for Comparison with Immature Bamboo and Other Grass Species

Yoko Okahisa-Kobayashi

Authors

Yoko Okahisa-Kobayashi JSPS Postdoctoral Fellow for Research Abroad: UMR 1318 INRA-AgroParisTech, Institut Jean-Pierre Bourgin, Versailles France 2Present affiliation; Institute for the Promotion of University Strategy Global Excellence, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan Author

Keywords:

Bamboo, Monosaccharide sugar composition, Lignins, S/G ratio, p-Coumaric acid (CA), Ferulic acid (FA), p-Coumaroylated Arabinose, Feruloylated Arabinose, Py-GC-MS, FTIR, GC-MS, HPLC

Abstract

An in-depth structural analysis of lignins, hemicelluloses and associated ferulic acid (FA) and p-coumaric acid (CA) in Phyllostachys bambusoides bamboo 2-year-old culms and immature 150 cm-long culms were performed. This analysis was comparatively carried out with maize stems and wheat straw, selected as representatives of C4 and C3 grass species. Neutral sugar composition and CA/FA ratio were changed between the immature basal side and immature apical side as well as immature and mature bamboo. As compared to maize or wheat samples, this investigation revealed some original features of the native lignins from mature Phyllostachys bambusoides culms.