Abstract:The effects of different treatments on the phenolic and their antioxidants activities in vitro were studied in the germinant brown rice.Using room temperature（25℃）homogenized samples as controls，the effects of hot air drying and vacuum drying on the content of free or bound phenolic，and their 1，1-diphenyl-2-nitrophenylhydrazine（DPPH）free radical scavenging capacity，ferrous iron reduction capacity（FRAP）and oxidative free radical absorption capacity（ORAC）were investigated，relative to the DPPH，FRAP and ORAC activities of untreated white rice，brown rice，or geminated brown rice obtained from the same rice variants as the treated samples.The results showed that there were significant differences in free and bound phenolic content，DPPH，FRAP，and ORAC in white rice，brown rice，and germinated brown rice（P<0.05），and the amount of free and bound phenolic in germinated brown rice was increased by hot air drying by 27.28，10.24 mg GAE/100 g DW.Compared to brown rice，the DPPH，FRAP and ORAC of free and bound phenolic were also significantly increased by germination（P<0.05）.There were no significant difference in free and bound phenolic and their DPPH，FRAP and ORAC between hot air dried and vacuum dried groups（P>0.05）.Nevertheless，free and bound phenolic and their DPPH，FRAP and ORAC were significantly reduced by hot air drying and vacuum drying compared to samples homogenized at room temperature（25 ℃）（P<0.05）.