Zhu, Jiangxiong published the artcileComparison and structural characterization of polysaccharides from natural and artificial Se-enriched green tea, HPLC of Formula: 59-23-4, the main research area is green tea leaf polysaccharide selenium; Artificial Se-enriched tea polysaccharides; Characterization; Natural Se-enriched tea polysaccharides.
Se-enriched green tea has been widely used as a functional food and disease prevention. In this study, two kinds of homogeneous polysaccharides namely ASe-TPS2 and NSe-TPS2 were obtained from artificial and natural Se-enriched teas with the mol. weights of 6.73 × 103 Da and 2.44 × 105 Da. The structures of ASe-TPS2 and NSe-TPS2 were characterized by monosaccharide composition anal., partial acid hydrolysis, methylation, FT-IR spectroscopy, NMR spectroscopy, SEM and TGA anal. It showed that ASe-TPS2 and NSe-TPS2 were acidic polysaccharides containing high amount of uronic acid. The structure of the ASe-TPS2 was mainly composed of β-D-(1 → 3)-Glcp, α-D-(1 → 4)-GalpA, (1 → 4)-Glcp, α-L-(1 → 2)-Rhap and α-D-(1 → 4)-GalpA, and the non-reducing ends were mainly composed of Araf and Xylp. However, the NSe-TPS2 was mainly composed of β-D-(1 → 4)-Glcp and α-D-(1 → 4)-GalpA, and the branches were mainly composed of β-L-(1 → 2)-Araf, α-D-(1 → 3)-Galp and β-L-(1 → 2)-Rhap whereas the non-reducing ends were mainly composed of Glcp and Galp residues. These results suggested that the distinction of selenylation methods could present different polysaccharide chain structures.
International Journal of Biological Macromolecules published new progress about Glycoproteins Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 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, HPLC of Formula: 59-23-4.
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