Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23897
Title: Structural characterization of a 2-O-acetylglucomannan from Dendrobium officinale stem
Authors: Hua, YF
Zhang, M
Fu, CX
Chen, ZH
Chan, GYS 
Keywords: Dendrobium officinale Kimura and Migo
Glucomannan
Polysaccharide
Structure
Issue Date: 2004
Publisher: Elsevier Sci Ltd
Source: Carbohydrate research, 2004, v. 339, no. 13, p. 2219-2224 How to cite?
Journal: Carbohydrate Research 
Abstract: A heteropolysaccharide obtained from an aqueous extract of dried stem of Dendrobium officinale Kimura and Migo by anion-exchange chromatography and gel-permeation chromatography, was investigated by chemical techniques and NMR spectroscopy, and is demonstrated to be a 2-O-acetylglucomannan, composed of mannose, glucose, and arabinose in 40.2:8.4:1 molar ratios. It has a backbone of (1→4)-linked β-D-mannopyranosyl residues and β-D-glucopyranosyl residues, with branches at O-6 consisting of terminal and (1→3)-linked Manp, (1→3)-linked Glcp, and a small proportion of arabinofuranosyl residues at the terminal position. The acetyl groups are substituted at O-2 of (1→4)-linked Manp and Glcp. The main repeating unit of the polysaccharides is reported.
URI: http://hdl.handle.net/10397/23897
ISSN: 0008-6215
DOI: 10.1016/j.carres.2004.05.034
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