Method HPLC was adopted. The system consisted of Hypersil ODS2 column and methanol-0.1% phosphonic acid(23:77) as mobile phase with a flow rate of 1.0mL/min and the uV detection wavelength was 250 nm.

• 方法采用高效液相色谱法测定甘草酸的含量；色谱柱Hypersil ODS2柱；流动相为甲醇-0.；1%25磷酸溶液(23:77)；流速1