Acidolysis of Bamboo Lignin II : Isolation and Identification of Acidolysis Products

Abstract

この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。Guaiacyl, syringyl and ρ-hydroxyphenyl monomers which are expected by cleavage of the β-ether bonds in arylglycerol-β aryl ether structures have been isolated and identified in the acidolysis products of a bamboo MWL by various methods such as IR and NMR spectrometry. ω-Hydroxysyringylacetone was the predominant product in monomeric fraction followed by w-hydroxyguaiacylacetone. DL-Syringaresinol and DL-episyringaresinol were isolated from dimeric fraction and identified by melting point, UV, IR, NMR and mass spectrometry. These findings in addition to previous results indicate that the bamboo MWL is a mixed polymer of guaiacyl and syringyl propanes and a small amount of ρ-hydroxyphenylpropane connected through similar linkages found in spruce MWL