食用菌黑柄炭角菌水溶性多糖的结构研究。重新研究。
Structural studies of water-soluble polysaccharides of an edible mushroom, Termitomyces eurhizus. A reinvestigation.
作者信息
Mondal Soumitra, Chakraborty Indranil, Pramanik Malay, Rout Dilip, Islam Syed S
机构信息
Department of Chemistry and Chemical Technology, Vidyasagar University, West Midnapore 721102, West Bengal, India.
出版信息
Carbohydr Res. 2004 Apr 28;339(6):1135-40. doi: 10.1016/j.carres.2004.02.019.
The structure of two polysaccharides isolated from the hot aqueous extract of fruiting bodies of the mushroom, Termitomyces eurhizus, have been reinvestigated. These consist of two homogeneous fractions PS-I and PS-II. PS-I contains only D-glucose as the monosaccharide constituent. From methylation analysis and periodate oxidation studies, followed by GLC-MS analysis the linkages, the sugar units in PS-I were identified as (1-->3)-D-Glcp and (1-->6)-D-Glcp. PS-II contains D-glucose, and the mode of linkage of d-glucose was identified as (1-->6)-D-Glcp. Finally, the following possible structures of the polysaccharides were assigned using 1H, 2D-COSY, TOCSY, NOESY and 13C NMR spectral analysis: [carbohydrate structure: see text].
对从真菌黑柄炭角菌子实体的热水提取物中分离出的两种多糖的结构进行了重新研究。它们由两个均一组分PS-I和PS-II组成。PS-I仅含有D-葡萄糖作为单糖成分。通过甲基化分析、高碘酸盐氧化研究，随后进行气相色谱-质谱分析，确定了PS-I中的连接方式，糖单元被鉴定为(1→3)-D-葡萄糖吡喃糖和(1→6)-D-葡萄糖吡喃糖。PS-II含有D-葡萄糖，D-葡萄糖的连接方式被鉴定为(1→6)-D-葡萄糖吡喃糖。最后，使用1H、2D-COSY、TOCSY、NOESY和13C NMR光谱分析确定了多糖的以下可能结构：[碳水化合物结构：见正文]
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