Simultaneous Determination Lipophilic Components from by HPLC of Five Hydrophilic and r o o t s o f Sa/via rniltiorrhiza

Objective A reversed-phase HPLC method was established for the simultaneous determination of five hydrophilic and lipophilic components in the roots of Salvia miltiorrhiza. Methods Hydrophilic components including danshensu, protocatechuic aldehyde, and salvianolic acid B, and lipophilic components such as cryptotanshinone and tanshinone liA, were successfully separated on a Waters Symmetry C18 reverse- phase column （250 mm×4.6 mm, 5 μm）, with acetonitrile-0.5% phosphoric acid （gradient elution） as mobile phase, the detection wavelength was set at 281 nm with flow rate of 1.0 mL/min, and the column temperature was maintained at 30 ~C. Results The recovery of the method was in the range of 95.1%-102.5% and the precision was less than 3% for all five analytes. All the compounds showed good linearity （R2 〉 0.9990） in a relatively wide concentration range. Therefore, this HPLC method demonstrated good reproducibility, stability, and accuracy in validation studies. Conclusion Simultaneous quantification of the multiple components by HPLC would be a better strategy for the quality evaluation on the roots of S. miltiorrhiza.