Article ID Journal Published Year Pages File Type
1389846 Carbohydrate Research 2007 7 Pages PDF
Abstract

Two major polysaccharide fractions, CDA-1A and CDA-3B, were isolated from the cold-water extract of Cistanche deserticola Y. C. Ma, a holoparasitic plant and a valuable traditional Chinese medicine, using anion-exchange chromatography on DEAE-cellulose and gel-permeation chromatography on Sephacryl S-300 and Sephadex G-150. Their major structural features were elucidated using component and linkage analyses, periodate oxidation, Smith degradation, partial acid hydrolysis, and NMR spectroscopy. The results indicated that CDA-1A is an α-(1→4)-d-glucan with α-(1→6)-linked branches attached to the O-6 of branch points and that CDA-3B is an RG-I polysaccharide containing a typical rhamnogalacturonan backbone and arabinogalactan or arabinan branches. Bioactivity tests showed that CDA-1A is inert for T-cell proliferation stimulation but active for B-cell proliferation, while CDA-3B is potent for the stimulation of both T- and B-cell proliferation.

Graphical abstractCDA-3B is a RG-I polysaccharide containing typical rhamnogalacturonan backbone and arabinogalactan or arabinan branches.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Organic Chemistry
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