[Determination of salvianolic acid B in the radix of Salvia miltiorrhiza Bge. by HPLC].

OBJECTIVE: To develop an HPLC method for determining salvianolic acid B in radix of Salvia miltiorrhiza. METHOD: The sample was extracted with 75% methanol. ODS column was used with methanol-5% acetic acid solution (35:65) as mobile phase. Detection wavelength was 281 nm. RESULT: Salvianolic acid B was separated well. Good linearity of salvianolic acid B was obtained (r = 0.9997) within the range of 0.17-1.7 micrograms. The average recovery was 98.9%. Repeatability was good, and RSD was 1.82%. CONCLUSION: This method can be used for quality control of radix of Salvia miltiorrhiza.