| Structural elucidation of a new arabinogalactan from the leaves of Nerium indicum. | |
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MedLine Citation:
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PMID: 11403084 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A polysaccharide fraction, NIB-2, was obtained from the 3% aqueous sodium carbonate extract of Nerium indicum leaves using anion-exchange chromatography and gel-permeation chromatography. It was found to be composed of rhamnose, arabinose, galactose, in the ratios of 1.0:10.4:4.4, along with 4% of galacturonic acid. The results of methylation analysis, periodate oxidation, partial acid hydrolysis, pectinase treatment, and 13C and 1H NMR spectroscopy indicate that it is mainly an arabinogalactan having a backbone of 1,6-linked beta-Galp, with branches at O-3, consisting of terminal, 1,5-, and 1,3,5-linked arabinofuranosyl residues, and a small proportion of galactosyl residues at the termini. Rhamnose and galacturonic acid arose from a contaminating rhamnogalacturonan. |
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Authors:
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Q Dong; J N Fang |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Carbohydrate research Volume: 332 ISSN: 0008-6215 ISO Abbreviation: Carbohydr. Res. Publication Date: 2001 May |
Date Detail:
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Created Date: 2001-06-13 Completed Date: 2001-12-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0043535 Medline TA: Carbohydr Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 109-14 Citation Subset: IM |
Affiliation:
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Shanghai Institute of Materia Medica, Chinese Academy of Sciences, People's Republic of China. dongqun@hotmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Angiosperms
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chemistry* Galactans / chemistry* Nuclear Magnetic Resonance, Biomolecular Plant Leaves / chemistry* Plants, Toxic / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Galactans; 9036-66-2/arabinogalactan |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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