Polysaccharides from Fabaceae. IV. Galactomannan from Gueldenstaedtia monophylla seeds
| Autor: | I. Yu. Selyutina, Daniil N. Olennikov, A. V. Rokhin |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
biology Stereochemistry Mannose Plant Science General Chemistry Fabaceae biology.organism_classification Polysaccharide General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Galactomannan chemistry Gueldenstaedtia Galactose Mannobiose Organic chemistry Macromolecule |
| Zdroj: | Chemistry of Natural Compounds. 46:673-676 |
| ISSN: | 1573-8388 0009-3130 |
| Popis: | Galactomannan (yield 1.73% of seed mass) with molecular weight 808 kDa was isolated from seeds of Gueldenstaedtia monophylla Fisch. (Fabaceae). Its solutions were typically highly viscous with [η] 664.7 mL/g and optically active with [α]D +45.2°. It consisted of galactose and mannose in a 1:1.91 ratio. Physical chemical methods established that the principal chain of the polysaccharide consisted of 1,4-β-D-mannopyranose units substituted 50.1% in the C-6-position by single α-D-galactopyranose units and traces of 6-O-α-galactopyranosylgalactopyranose. The contents of mannobiose blocks substituted by galactose Man–Man, (Gal)Man–Man/Man–Man(Gal), and (Gal)Man–Man(Gal) in the galactomannan macromolecule were 23, 42, and 35%, respectively. |
| Databáze: | OpenAIRE |
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