Seyfi, Roxana published the artcileIsolation and structural characterization of a polysaccharide derived from a local gum: Zedo (Amygdalus scoparia Spach), Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, the main research area is local gum polysaccharide structural property.
In this study, a novel polysaccharide was isolated from a local gum, zedo (Amygdalus scoparia Spach). Chem. composition of the gum and elemental anal. of the isolated polysaccharide were determined The polysaccharide and its fragments were examined by gas chromatog.-mass spectrometry, GC-MS, viscometry, 1H NMR, and13CNMR spectroscopy. Results obtained from different methods, revealed that a hetero-polysaccharide is the main component of the gum. The amounts of moisture, minerals, protein and lipid were 9.42, 2.23, 1.05, and 0.03 (weight/weight %), resp. The amounts of carbon, hydrogen, oxygen and nitrogen obtained from elemental anal. were 38.5, 5.8, 35.3, and 0.3 (weight/weight %), resp. The presence of arabinose, galactose, rhamnos, mannose, β- D-glucose, fructose, galacturonic and glucuronic acids residues were measured by GC-MS anal. However, conversion of glucose into fructose probably occurred during the anal., because the temperature of the anal. is high enough. Both carboxylic groups and minerals/salts had a major influence on the rheol. properties of the gum. The gum exhibited polyelectrolyte behavior, and its solutions did not follow Newtonian flow behavior. It can be naturally occurred as an anionic polysaccharide. The gum was a highly branched polysaccharide and a member of arabinogalactans family. The main chain contains α- L-arabinofuranosyl, α- L-Araf, and β-D-galactopyranonyl, β-D-Galp, units. The following residues were identified: → 3,4) β-D-Galp (1→; → 3,4,6) β-D-Galp (1→; →3)- α- L-Araf-(1→; → 4) β-D-GlcpA (1 → .; glucosyl residues; and α-L- Rhap, (1 → . Terminal residues were: α-L- Rhap; and α- L-Araf.
Food Hydrocolloids published new progress about Arachis hypogaea. 59-23-4 belongs to class alcohols-buliding-blocks, name is (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal, and the molecular formula is C6H12O6, Application of (2R,3S,4S,5R)-2,3,4,5,6-Pentahydroxyhexanal.
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