仙人掌多糖清除活性氧作用初探  

Elementary Research of the Effects of the Cactus Polysaccharide on Removal of Reactive Oxygen Species

作　　者：杨贝[1] 庄延[1] 邵雪玲[1] 

机构地区：[1]武汉大学生命科学学院,武汉430072

出　　处：《武汉植物学研究》2004年第2期183-186,共4页Journal of Wuhan Botanical Research

基　　金：武汉大学大学生业余科研基金;武汉大学生命科学学院实验教学中心四室的资助。

摘　　要：从仙人掌中提取并纯化多糖,采用分光光度法在多种体系中研究了仙人掌多糖清除活性氧的作用,并用琼脂糖凝胶电泳法观察了该多糖对·OH导致DNA链损伤的抑制作用。结果表明,仙人掌多糖能够有效地清除O 2和·OH等活性氧,对·OH导致的DNA损伤具有良好的保护效果。Polysaccharide was isolated and purified from cactus. The effects of the cactus polysaccharide on removal of reactive oxygen species in some chemical systems were investigated by spectrophotometry. Inhibitory effect of the cactus polysaccharide on the DNA damage induced by hydroxyl radical was investigated by gel electrophoresis. The result demonstrated that the cactus polysaccharide could significantly remove O~_2 and~·OH. This polysaccharide can also efficiently inhibit DNA damage generated by~·OH.

关 键 词：仙人掌多糖 活性氧 抗氧化作用 

分 类 号：Q946.39[生物学—植物学]