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- W2391894825 abstract "Dendrobium nobile Lindl.(Chinese name Jin-Chai-Shi-Hu) is a species of Orchidaceae with distribution in Southeast Asia,southwest and south of China.In this work,a water-soluble heteropolysaccharide DNP-W1B with a molecular mass of 7.7×105 and specific rotation of [α]20D=+81.3°(c 0.3,H2O) was isolated from the stems of D.nobile Lindl.Monosaccharide composition analysis showed that DNP-W1B contained glucose,arabinose and galactose in a molar ratio of 6.2: 3.1: 0.9.The structural features of DNP-W1B were revealed by the combination of chemical and instrumental analysis,including IR,GC,methylation analysis and NMR.The results showed that DNP-W1B possessed a backbone of a disaccharide unit of [→4)-β-Glcp-(1→6)-β-Glcp-(1→] with 33% branches at O-4 of(1→6)-linked β-D-glucopyranosyl residues.The side chains contained arabinosyl and galactosyl chains.Primary immunological tests in vitro indicated that it could stimulate LPS-induced B lymphocyte and Con A-induced T lymphocyte proliferation.Survey showed that DNP-W1B was a novel immunoactive polysaccharide compound from Dendrobium Sw." @default.
- W2391894825 created "2016-06-24" @default.
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- W2391894825 date "2013-01-01" @default.
- W2391894825 modified "2023-09-25" @default.
- W2391894825 title "Structural Characterization of an Immunoactive Polysaccharide DNP-W1B from Dendrobium nobile Lindl." @default.
- W2391894825 hasPublicationYear "2013" @default.
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