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  • Title: Structural analysis of a neutral (1-->3),(1-->4)-beta-D-glucan from the mycelia of Cordyceps sinensis.
    Author: Wu Y, Sun C, Pan Y.
    Journal: J Nat Prod; 2005 May; 68(5):812-4. PubMed ID: 15921440.
    Abstract:
    The extracellular polysaccharide (1) extracted from the mycelia of Cordyceps sinensis with hot water was fractionated and purified by ion-exchange and gel-filtration chromatography. The structure was investigated using methylation and hydrolysis analysis, periodate oxidation, NMR spectroscopy, and reaction with beta-D-glucanase, and the results indicated that this D-glucan consisted of a backbone composed of (1-->3)-beta-D-glucosyl residues and carried a single (1-->4)-beta-linked D-glucosyl residue. NMR and IR spectroscopic measurements showed that the sugar residues were beta-glycosidically linked.
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