现代食品科技2011，Vol.27Issue(1)：1-5,5.
古尼虫草多糖硫酸酯化修饰及其抗氧化活性
Preparation of Sulfured Polysaccharides from Cordyceps gunnii and its Anti-oxidation Activity
摘要
Abstract
In this study, 70％ polysaccharides from Cordyceps gunnii (Berk.) Berk. were chemically modified via sulfation and was renamed as SPS70 (Cordyceps gunnii 70％ sulfated polysaccharides). The structure, property and bioactivity of SPS70 were subsequently investigated. Infrared spectroscopy analysis demonstrated that SPS70 possessed sulfate groups. After modification, the neutral polysaccharides were turn into acidic polysaccharides. After purification by DEAE-sephadex A-25, the purity of SPS70 reached 92.72％ and GPC anlysis showed that its molecular weight was of approximately 8490 Da. Anti-oxidation analysis revealed that the radical scavenging ability of SPS70 towards superoxide anion increased when increasing the frnal concentration of the polysaccharide. And the maximum hydroxyl and DPPH scavenging properties were abstained when SPS70 concentration was of 2.5 mg/mL, being of 71.23％ and 64. 12％, respectively.关键词
多糖/硫酸酯化/结构分析/抗氧化引用本文复制引用
朱振元,原静,李盛峰,刘荣强..古尼虫草多糖硫酸酯化修饰及其抗氧化活性[J].现代食品科技,2011,27(1):1-5,5.基金项目
天津市科技计划项目-应用基础与前沿技术研究计划重点项目(09JCZDJC21800)、天津市高等学校科技发展基金计划项目(20090604) （09JCZDJC21800）
