Kiho T, Kobayashi T, Morimoto H, Usui S, Ukai S, Hirano K, Aizawa K, Inakuma T
Gifu Pharmaceutical University, Japan .
Chem Pharm Bull (Tokyo). 2000 Nov;48(11):1793-5. doi: 10.1248/cpb.48.1793.
The structure of an anti-diabetic polysaccharide (TAP) obtained from the fruiting bodies of Tremella aurantia was investigated by methylation analysis, Smith degradation, partial acid hydrolysis, 13C-NMR spectrometry, and enzymatic digestion. The results suggested that TAP was composed of (1-->3)-linked alpha-D-mannopyranosyl residues as a backbone, some of which were substituted at position 2 with (1-->3)-linked beta-D-xylopyranose side chains and with beta-D-glucopyransyluronic acid at position 4 linked to terminal alpha-D-mannopyranose.
通过甲基化分析、史密斯降解、部分酸水解、13C-NMR光谱法和酶消化法对从橙黄银耳子实体中获得的一种抗糖尿病多糖（TAP）的结构进行了研究。结果表明，TAP由（1→3）连接的α-D-甘露吡喃糖残基作为主链组成，其中一些在2位被（1→3）连接的β-D-木吡喃糖侧链取代，在4位被与末端α-D-甘露吡喃糖相连的β-D-吡喃葡萄糖醛酸取代。
