Abstract: The bran of proso millet cultivars were analyzed for their phenolic content and antioxidant activities.Four extraction methods,including ethanol solvent、ultrasonicassisted ethanol extraction、enzymolysis、ultrasonicenzymolysis method,were compared for their efficiency of phenolic content of the Cimi2 bran.The total phenolic content were 225.77、192.23、231.01、221.15 mg/100 g respectively.The ratios of bound phenolic to free phenolic were 49:51、29:71、31:69、28:72 for four extraction methods respectively.Total phenolics from proso millet bran has a scavenging activity on DPPH、O₂^-· and ·OH radicals.The highest DPPH scavenging ability and total antioxidant capacity was found in zigangmi bran.The highest hydroxyl radical scavenging ability was found in Cimi2 bran.

Key words: Panicum miliaceum L.,free phenolic, bound phenolic, extraction methods, antioxidant activity