Abstract: In order to determine the best fixation method and time for gardenia,we set up different ways to fix the samples and evaluated the effects of HPLC,DPPH,FRAP and OH^-method on the quality and the antioxidant activity of Gardenia jasminoides.The results showed that:The effect of different methods of fixing on the quality of Gardenia and the antioxidant activity in vitro is different.The content of geniposide and chlorogenic acid were the highest in FZ-9,the content of crocin was the highest in RF-12,and the DPPH scavenging ability in Z-15 was significantly stronger than other treatments,FZ-9 on the reduction ability of Fe^{3 +} and hydroxyl radical scavenging capacity was significantly higher than other treatments.Taking into account the content,antioxidant activity,resource utilization,the appropriate methods was FZ-9.It will provide a theoretical basis for establishing a standardized initial processing method for Gardenia jasminoides Ellis.

Key words: Gardenia jasminoides Ellis, fixation, active component, antioxidant activity