[Comparison on HPLC fingerprint profiles of Lonicera japonica bud obtained by various dryness techniques].

OBJECTIVE:To investigate ingredient differences of Lonicera japonica bud processed by different dryness techniques. METHOD:The HPLC fingerprint was used to evaluate the quality of L. japonica by various dryness process. The analysis was performed on a Kromasil C18 (4.6 mm x 250 mm, 5 microm). Acetonitril and water containing 0.4% H3PO4 were used as mobile phases with gradient elution. The flow rate was set at 1.0 mL x min(-1), the column temperature was set at 30 degrees C, and the detection wavelength was at 238 nm. RESULT:The HPLC-fingerprint profiles of L. japonica from six different dryness techniques were determined. A total of 17 common peaks were found, but their contents from various dryness techniques were significantly different. CONCLUSION:HPLC-fingerprint technique was one of potential Process Analytical Techniques (PAT) to explore the ingredient differences in dryness process.