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首页> 外文期刊>Carbohydrate research >Structural characterization of an acetylated glucomannan with antiinflammatory activity and gastroprotective property from Cyrtopodium andersonii
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Structural characterization of an acetylated glucomannan with antiinflammatory activity and gastroprotective property from Cyrtopodium andersonii

机译:来自拟南芥的抗炎活性和胃保护性的乙酰化葡甘露聚糖的结构表征

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摘要

A polysaccharide with an estimated weight-average molar mass of 5.35 × 10~5 was obtained from an aqueous extract of pseudobulbs of Cyrtopodium andersonii R. Br. It was composed of D-glucose and D-mannose in 1:3 molar ratio. Chemical and spectroscopic analyses revealed a linear structure of the polymer with a backbone composed of (1→4)-linked b-D-glucopyranosyl and mannopyranosyl units slightly branched at C-2, C-3, and C-6 by side chains, as terminal non reducing residues of D-mannopyranose and D-glucopyranose. It was found to contain 14.6% of acetyl groups substituted at C-2 of (1→4)-linked b-D-mannopyranosyl units. The acetylated glucomannan demonstrated antiinflammatory and antiulcerogenic activities.
机译:从拟南芥(Cyrtopodium andersonii R. Br。)假鳞茎的水提物中获得一种估计重均摩尔质量为5.35×10〜5的多糖。它由摩尔比为1:3的D-葡萄糖和D-甘露糖组成。化学和光谱分析表明,聚合物的线性结构具有主链,该主链由(1→4)连接的bD-吡喃葡萄糖基和甘露吡喃糖基单元在侧边在C-2,C-3和C-6处略微分支,作为末端D-甘露吡喃糖和D-吡喃葡萄糖的非还原性残基。发现它含有在(1→4)连接的b-D-甘露吡喃糖基单元的C-2处取代的乙酰基的14.6%。乙酰化的葡甘露聚糖显示出抗炎和抗溃疡的活性。

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