Objective: To optimize the process for purification of geniposide in the extract fluid of Gardenia jasminoides with macroporous absorption resin.
Methods: By comparing the content and transfer ratio of geniposide during the process of purification, we optimized the process for purification of geniposide.
Results: The optimal process for purification of geniposide with D301R macroporous absorption resin included the diameter height ratio 1:7.5, the concentration of the extract fluid of Gardenia jasminoides 2:1, the flow rate 1BV/h (1BV represented one column volume), the sample volume 1/3BV. We loaded the sample and left it for 2 hours, afterwards, rinsed the macroporous absorption resin using 2BV water until the solution became colourless. Then we rinsed the macroporous absorption resin with 20% alcohol,and the volume of elution solvent was 2BV. We collected 20% alcohol elution solvent and recycle alcohol using rotating evaporation and dried the rest solution in a vacuum to get the light yellow powder which was the purified geniposide.
Conclusion: This process is simple and affordable, can be used to refine and purify geniposide in the extract fluid of Gardenia jasminoides Ellis. It provides a guidance for industrial production basis.