从茜草中首次分离得到茜草多糖(RCL),将水解后的多糖转化为糖腈乙酰醋衍生物，用气相 色谱分析确定糖基的组成及摩尔组成比为鼠李糖：阿拉伯糖，木糖，甘露糖，葡萄糖，半乳糖(1.0， 0.31:0.46:0.25:0.42:1．05)

Polysaccharide RCL was obtained from Rubia cordifolia L.After conversion of the hydrolysates of RCL into aldononitriles acetylated derivatives,the components of RCL were identified by GC.The components of RCL includes rhamnose,arabinose,xylose, mannose,glucose and galactose in molar ratio of 1.0:0.31:0.46:0.25:0.42:1.05.