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Carbohydr Res. 2010 Jan 11;345(1):97-100. doi: 10.1016/j.carres.2009.10.020. Epub 2009 Oct 30.

The surface structure of well-ordered native cellulose fibrils in contact with water.

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  • 1Royal Institute of Technology (KTH), School of Biotechnology, AlbaNova University Centre, SE-106 91 Stockholm, Sweden.


CP/MAS (13)C NMR spectroscopy was used in combination with spectral fitting to examine the surface structure of hydrated cellulose I fibrils from Halocynthia and Gluconoacetobacter xylinus. To increase the spectral intensities and minimize signal overlap, G. xylinus celluloses site-specifically enriched in (13)C either on C4 or on both C1 and C6 were examined. The experimental data showed multiple C4 and C6 signals for the water accessible fibril surfaces in the highly crystalline celluloses. These signal multiplicities were attributed to structural features in the surface layers induced by the fibril interior, and could not be extracted by spectral fitting in celluloses with a lower degree of crystallinity such as cellulose from cotton.

Copyright 2009 Elsevier Ltd. All rights reserved.

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