UV法测定狗肝菜与红丝线草的多糖含量

Content Determination of Polysaccharides in Dicliptera chinensis (L.) Nees and Peristrophe roxburghian (Schult) Bremek by UV

目的对狗肝菜和红丝线草中多糖含量进行测定和比较。方法紫外分光光度法。结果该方法线性关系良好(r=0.999 8);回收率为99.57%。测得狗肝菜多糖含量为5.23%,红丝线草多糖含量为9.85%。结论该方法灵敏度高,重现性好,可为狗肝菜和红丝钱草的质量标准提供科学依据。

Objective To compare the polysaecharides contents in Dicliptera chinensis （L.） Nees and Peristrophe roxburghian （Schult） Bremek. Methods Ultra - violet spectrophotometry was used. Results The linear range is good （ r = O. 999 8）, and the average recovery is 99.57 %. The polysaccharides content in Dicliptera chinensis （L.） Nees is 5.23 %, and that in Peristrophe roxburghian （Schuh） Bremek is 9.85 %. Conclusion This method is sensitive and has good re- producibility. The difference of polysaccharides content can supply evidence for the identification of these two medicinal herbs with similar appearance.