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Wood Science and Technology

, Volume 22, Issue 3, pp 231–241 | Cite as

Ester linkages between lignin and glucuronoxylan in a lignin-carbohydrate complex from beech (Fagus crenata) wood

  • N. Takahashi
  • T. Koshijima
Article

Summary

A water-soluble lignin-carbohydrate complex (LCC) isolated from beech (Fagus crenata) MWL was investigated. Results from gelfiltration chromatography and the infrared spectrum of the LCC treated with alkali under mild conditions indicated that the LCC contained alkali-labile bonds. Decrease of uronic acid content and the detection of 4-O-methylglucose in the sodium borohydride-reduced LCC suggested the presence of an ester linkage between lignin and glucuronic acid in the glucuronoxylan. Conductometric titration also indicated the existence of glucuronic acid ester linked to lignin. From these results, it is concluded that the LCC contained an ester linkage between lignin and glucuronoxylan and that about one-third of the glucuronic acid present in the LCC was involved in this ester linkage.

Keywords

Sodium Ester Chromatography Lignin Titration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • N. Takahashi
    • 1
  • T. Koshijima
    • 1
  1. 1.Research Section of Wood Chemistry Wood research InstituteKyoto UniversityKyotoJapan

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