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[Identification and evaluation of TCM shayuanzi]
Yu-jie Zhang1, Jian-jun Zhang, Xing-li Yan
1Beijing University of Traditional Chinese Medicine, Beijing 100102, China. yjzh@263.net
Objective:
To understand the varieties of Shayuanzi on sale and establish the method for evaluating its quality.
Method:
22 samples collected from all over the country were identified by TLC and the contents of total flavone in them were determined with UV.
Result:
All samples could be classified into three varieties, and they could be identified by TLC. The contents of total flavone in them were 0.3%-1.0%.
Conclusion:
Shayuanzi on sale mainly includes Astragalus complanatus, and there are A. adsuragen and A. sinicus as well. TLC is a better method for the identification of shayuanzi. The total flavone in A. complanatus is 0.33%-0.82%.
