Objective: To study the changes of active components in the root of Pueraria lobata after processing.
Method: Using HPLC, with a C18 column, MeOH-H2O-CHCl3(25:75:1) as mobile phase, and flow rate 1 ml/min.
Result: The Puerarin in different processed products of the drug is increased in content, but gets seriously destroyed if processed by carbonizing.
Conclusion: The Puerarin content in the root of Pueraria lobata is affected by drug-processing.