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[Determination of ellagic acid compounds in Euscaphis japonica by using UPLC]
Aimin Wang1, Zhi Liu, Haijun Wang
1School of Pharmacy, Guiyang Medical College, Guiyang 550004, China.
Objective:
To develop an ultra performance liquid chromatography (UPLC) method for simultaneous determination of five ellagic acids in Euscaphis japonica.
Method:
Analysis was carried out on an Acquity BEH C18 (2.1 mm x 100 mm, 1.7 microm) column at 40 degrees C eluted with acetonitrile-0.1% phosphoric acid aqueous solution as mobile phases in gradient elution. The flow rate was 0.2 mL x min(-1), and the detection wavelength set was monitored at 245 nm.
Result:
All calibration curves showed good linear relationship within test ranges (r >0.9997), and the overall recoveries were in the range of 97.2%-102.1%, with RSD less than 3.2% (n = 6). The overall RSD of precision test were less than 2.9%.
Conclusion:
The developed method was simple, rapid, accurate and reproducible, and can be used for the quality control of E. japonica.
