魔芋甘露聚糖化学结构的研究  

STUDY ON THE CHEMICAL CONSTITUTION OF KONJAK MANNAN

作　　者：吴万兴 李科友 张忠良 王照利 丁东宁[2] 靳菊情[2] 李映丽[2] 

机构地区：[1]陕西省林科所 [2]西安医科大学

出　　处：《林产化学与工业》1997年第2期69-72,共4页Chemistry and Industry of Forest Products

基　　金：林业部重点课题

摘　　要：研究了从陕西花魔芋块茎中分离所得的魔芋甘露聚糖的化学结构与分子组成。经葡聚糖凝胶ＳｅｐｈａｄｅｘＧ－７５柱层析为一组均一性多糖，气相色谱检测由甘露糖、葡萄糖组成，其摩尔比为１．７８１，平均分子量为１１×１０５。经红外光谱、高碘酸氧化和Ｓｍｉｔｈ降解分析。Chemical constitution and molecular structure of konjak tuber mannan isolated from konjak tuber of Shanxi were studied.By Sephadex G 75 column chromatogram,konjak mannan was proved to be a homogeneous substance. By gas chromatographic analysis,konjak mannan is composed of the mannose and glucose and there molecular ratio is 1.78∶1.The average molecular weight is 11×10 5. On the basis of IR periodate oxidation and Smith degradation analysis, the main chains are composed of β (1→4)and β (1→3) linkages.

关 键 词：魔芋 魔芋甘露聚醇 甘露醇 葡萄糖 化学结构 

分 类 号：O636.1[理学—高分子化学]