【作者】 蔡林涛； 李萍； 陆祖宏；

【Author】 CAI Lin-tao LI Ping~* LU Zu-hong (National Laboratory of Molecular and Biomolecular Electronics,Southeast University,Nanjing 210096,China.) (* Department of Pharmacognosy,China Pharmaceutical University,Nanjing 210009,China.)

【机构】 东南大学分子与生物分子电子学开放研究实验室； 中国医科大学生药学教研室；

【摘要】 本文通过原子力显微镜直接观察虫草多糖分子的三维结构形貌。虫草多糖分子的稀溶液铺展在 Ni²⁺处理的云母片上,经干燥,乙醇固定后,获得稳定、重复的图像。结果表明虫草多糖分子具有高度分枝的结构,并且糖链间形成小环或螺旋结构。更多还原

【Abstract】 A method has been developed to give topography of cordyceps polysaccharides by atomic force microscopy（AFM）.Aqueous solutions of the polysaccharides are deposited as drops onto Ni²⁺ mica surfaces,air dried,ethanol fixed,and then captured the stability and reproducible images.The results showed that cordyceps polysaccharides have a multi-branched structure and a variety of different linkages between adjacent monosaceharides,which compose the small rings and the helical structure.更多还原