Extraction and Content Determination of Oleanolic acid in Caulis Clematidis Armandii
ABSTRACT
Objective:To develop an HPLC method for the content determination of oleanolic acid in Caulis Clematidis Armandii. Methods:A Hypersil BDS C18 chromatographic column (4.6mm×200mm,5μm)was used; methanol -water(0.5%acetic acid,0.2%triethylamine)(81:19)was the mobile phase;the column temperature was at 35℃;the flow rate,1.0ml/min,UV detection wavelength,215nm. Results : There was a good linear in the range of 31.56μg·mL-1~1010μg·mL-1 for oleanolic acid (r = 0.9996).The average recovery of oleanolic acid was 100.9%,the RSD was 1.6%,the content of oleanolic acid in Caulis Clematidis Armandii was 77.33mg·g-1 . Conclusion : This method is sensitive, accurate, reproducible and can be used as Caulis Clematidis Armandii oleanolic acid method for the determination.
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