摘要
从植物鬼臼根的沸水提取液中分离出一个水溶性多糖EPS.它是由单—葡萄糖残基构成的葡聚糖,分子量约为1.6×10~4.经酸全水解,甲基化反应,高碘酸氧化,Smith降解,KI-I_2反应,IR,~1H NMR和^(13)C NMR分析,证明其化学结构为1,4-葡萄糖残基为主链,并在6-O位有侧链的葡聚糖.
A water - soluble glucan, EPS, from the roots of Podophyllum emodi Wall Var. chinense spraque was obtained homogeneous as determined by polyacrylamide gel electrophoresis and gel filtration. EPS was only composed of D - glucose, and its mean molecular weight wasestimated to be 1.6 × 104. Methylation analysis, periodate oxidation, Smith degradation, KI- I2 reaction, IR, 1H NMR and 13C NMR showed that it is a (1 4) linked a - D - glucan to which are attached glucosyl side chains at 6 - O of the glucosyl residues of the main chain.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1996年第10期1037-1040,共4页
Acta Chimica Sinica
基金
甘肃省自然科学基金资助项目