郑建仙; 耿立萍
华南理工大学食品工程系
【中文摘要】 通过酸水解，甲基化和Ｓｍｉｔｈ降解等分析方法，借助于气相色谱和红外光谱等近代分析仪器，对存在于香菇柄中ＰＪＦＩ多糖的化学本质作了剖析，建立了结构模型。结果表明，ＰＪＦＩ是带分支结构的多糖分子，其主链是由β（１→３）糖苷键连接的葡聚糖，主链通过Ｃ＿６位置带有（１→６）键连的低聚葡萄糖或低聚半乳糖作为侧链，部分低聚半乳糖短链还通过Ｃ＿２位置连有甘露糖低度聚合物或木糖残基作为二级侧链。
【英文摘要】 ollowed by the analysis methods of acid hydrolysis, methylation and Smith degr-adation,with the help of modern instruments of GC and IR etc,the chemistry natureof PJFI polysaccharide from foot body of Lentinus edodes was analysed and its structuralmodel was founded,The results showed that a branched molecule of PJFI contained aβ(1→3)linked glucan backbone,which was branched at position C_6 with(1→6)─linkedglucooligosaccharide of galactooligosaccharide side chain,some of galactooligosaecharideshort chain,in turn,carried mannooligosaccharide or xylose residues,as the substituenton position C_2.
【中文关键词】 香菇柄; 多糖; 结构模型
【英文关键词】 Foot Body of Lentinus edodes; Polysaccharid、Structural Model
【文献出处】 中国食用菌,EDIBLE FUNGI OF CHINA,编辑部邮箱,1995年05期 【DOI】CNKI:SUN:ZSYJ.0.1995-05-002