Ding H, Wang Y, Wang S, You W
Shanxi Medical University, Taiyuan 030001.
Zhongguo Zhong Yao Za Zhi. 1998 Feb;23(2):102-3, inside back cover.
Ursolic acid was isolated form Herba Cynomorii by thin layer chromatography and was quantitatively determined by ultraviolet spectrophotometry. The results indicate that the content of ursolic acid is 0.78%. The average recovery rate of ursolic acid is 97.4%, RSD = 0.45% (n = 4).
采用薄层色谱法从锁阳中分离出熊果酸，并通过紫外分光光度法进行定量测定。结果表明，熊果酸的含量为0.78%。熊果酸的平均回收率为97.4%，相对标准偏差RSD = 0.45%（n = 4）。
