A new arabinoxylan from green leaves of Litsea glutinosa (Lauraeae): structural and biological studies.

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ID: 76562
2013
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Abstract
A water soluble new arabinoxylan, isolated through hot water extraction from the green leaves of Litsea glutinosa (Lauraceae) was found to contain xylose and arabinose in a molar ratio of nearly 1:3. On the basis of NMR ((1)H, (13)C, DQF-COSY, TOCSY, NOESY, ROESY, HMBC and DEPT-135), GLC and GLC-MS analyses, the backbone was established as (1→4)-α-D-xylopyranosyl residue, substituted at C-2 with one unit of two adjacently linked (1→3)-α-L-arabinofuranosyl residues and the other one was terminated by β-L-arabinofuranosyl residue. The proposed repeating unit of the molecule was established as: [formula, see text] This molecule showed strong splenocyte, thymocyte, and macrophage activations. The optimum doses of the polysaccharide for splenocyte and thymocyte proliferation were observed at 25 μg/mL and 50 μg/mL, respectively. An enhanced production of NO was observed at 100 μg/mL of the polysaccharide.
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das2013acarbohydrate Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Das, Debsankar;Maiti, Swatilekha;Maiti, Tapas K;Islam, Syed S;
Journal Carbohydrate polymers
Year 2013
DOI
10.1016/j.carbpol.2012.10.052
URL
Keywords
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