24951-72-2Relevant academic research and scientific papers
Chemical analysis of an immunoenhancing water-soluble polysaccharide of an edible mushroom, Pleurotus florida blue variant
Dey, Biswajit,Bhunia, Sanjoy K.,Maity, Kankan K.,Patra, Sukesh,Mandal, Soumitra,Maiti, Swatilekha,Maiti, Tapas K.,Sikdar, Samir R.,Islam, Syed S.
, p. 2736 - 2741 (2010)
An immunoenhancing polysaccharide isolated from the aqueous extract of the fruit bodies of the mushroom, Pleurotus florida blue variant, was found to consist of d-glucose and d-galactose in a molar ratio of nearly 5:1. On the basis of sugar analysis, methylation analysis, periodate oxidation, Smith degradation, and NMR studies (1H, 13C, DEPT-135, DQF-COSY, TOCSY, NOESY, ROESY, HMQC, and HMBC), the structure of the repeating unit of the polysaccharide was established as: The molecule activated macrophages, splenocytes, and thymocytes.
A novel low-molecular-mass pumpkin polysaccharide: Structural characterization, antioxidant activity, and hypoglycemic potential
Huang, Linlin,Li, Fei,Li, Quanhong,Liang, Li,Wei, Yunlu,Yu, Guoyong
, (2020/10/02)
The novel natural low-molecular-mass polysaccharide (SLWPP-3) from pumpkin (Cucurbia moschata) was separated from the waste supernatant after macromolecular polysaccharide production and purified using a DEAE cellulose-52 column and gel-filtration chromatography. Chemical and instrumental studies revealed that SLWPP-3 with a molecular mass of 3.5 kDa was composed of rhamnose, glucose, arabinose, galactose and uronic acid with a weight ratio of 1: 1: 4: 6: 15, and primarily contained →3,6)-β-D-Galp-(1→, →4)-α-GalpA-(1→(OMe), →4)-α-GalpA-(1→, →2,4)-α-D-Rhap-(1→, →3)-β-D-Galp-(1→, →4)-α-D-Glcp, and →4)-β-D-Galp residues in the backbone. The branch chain passes were connected to the main chain through the O-4 atom of glucose and O-3 atom of arabinose. Physiologically, the ability of SLWPP-3 to inhibit carbohydrate-digesting enzymes and DPPH and ABTS radicals, as well as protect pancreatic β cells from oxidative damage by decreasing MDA levels and increasing SOD activities, was confirmed. The findings elucidated the structural types of pumpkin polysaccharides and revealed a potential adjuvant natural product with hypoglycemic effects.
Furostan saponin and GC-MS study toward ascertaining the point of linkage between sugars moieties of spirostan saponin from the rhizomes of Agapanthus africanus (Linn.)
Singh,Verma
experimental part, p. 999 - 1003 (2011/04/26)
The linkage between the sugars moieties of antifungal spirostan saponin, (25R)-5α-spirost-7-en-2α,3β,5α-triol-3-O-{-O-α-L- rhamnopyranosyl-(1→2)-O-[β-D-galactopyranosyl-(1→3)] -β-D-glucopyranoside} of Agapanthus africanus (Linn.) have been determined by the analysis of GC-MS spectra of alditol acetates of the partially methylated sugars and the structures of the spirostan saponin and furostan saponin, 22-O-methyl-26-O-β-D-glucopyranosyl-(25R)-5α-furostan-2α, 3β,5α,9α,22ζ,26-hexitol-3-O-{-O-α-L-rhamnopyranosyl- (1→2)-O-[β-D-galactopyranosyl-(1→3)]-β-D-glucopyranoside} isolated from the rhizomes of the A. africanus have been established by various spectral evidences. This is the first report of furostan saponin in A. africanus rhizomes as well as first account of the use of GC-MS technique to ascertain the linkage between the saccharide moieties of the active constituent of the plant.
THE STRUCTURAL ELUCIDATION OF THE CAPSULAR POLYSACCHARIDE OF Klebsiella K68
Dutton, Guy G. S.,Parolis, Haralambos,Parolis, Lesley A. S.
, p. 249 - 260 (2007/10/02)
The structure of the capsular polysaccharide isolated from Klebsiella K68 bacteria has been elucidated by both chemical and spectroscopic methods.The structure is of the "3+1" type, similar in pattern to the structures of the polysaccharides of Klebsiella K11 and K57, having a single branch point on the uronic acid.The polysaccharide is shown to consist of the following repeating unit:
