Effect of processing on the antioxidant activity of millet grains

► Dehulling affected the phenolic content and antioxidant properties of millet grains. ► The antioxidant activity upon dehulling depended on the millet type. ► Millets hulls had the highest total phenolic content and antioxidant activities. ► Hydrothermal treatment did not affect the total phenolic content of dehulled millet grains.