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Licensed Unlicensed Requires Authentication Published by De Gruyter November 1, 2006

Amphiphilicity of a lignin-carbohydrate complex

  • Yasumitsu Uraki , Yuriko Usukura , Takao Kishimoto and Makoto Ubukata
From the journal


A lignin-carbohydrate complex (LCC) fraction isolated from the residue of milled wood lignin extraction of birch was found to form self-aggregates in water. The aggregates had relatively strong hydrophobic domains, comparable to the hydrophobicity of 80% ethanol. Dynamic light scattering analysis showed that the aggregates were transformed into small particles by sonication with a number-average diameter of 43.7±9.6 nm, and were stable in water. The surface pressure (π)-surface area (A) profile showed that the LCC also formed a monolayer on the water surface. Based on these results, we suggest that the LCC is amphiphilic in nature, despite its insolubility in low-polarity organic solvents.


Corresponding author. Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, N-9, W-9, Kita-ku, Sapporo 060-8589, Japan


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Published Online: 2006-11-01
Published in Print: 2006-11-01

©2006 by Walter de Gruyter Berlin New York

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