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01-08-2010 | Issue 4/2010

Cellulose 4/2010

Towards unnatural xylan based polysaccharides: reductive amination as a tool to access highly engineered carbohydrates

Journal:
Cellulose > Issue 4/2010
Authors:
Stephan Daus, Thomas Elschner, Thomas Heinze

Abstract

Low molecular weight xylan was modified at the reducing end with mono and bifunctional amines. Characterization by means of elemental analysis, nmr spectroscopy and mass spectrometry proved the success of the highly selective reaction. Modified xylan containing amino groups at the reducing end are capable to react with unmodified xylan and cellodextrins. The structure of the products obtained was proved by NMR spectroscopy. Size exclusion chromatography and mass spectrometry verified the increased molar mass of the head-head linked polysaccharides.

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