In this study, the total antioxidant capacity of all ten lotus extracts were determined by evaluating their ability to reduce Mo (VI) to Mo (V) followed by formation of a green phosphate/Mo (V) complex at acidic pH. As shown in Figure 3, most lotus extracts exhibited obvious total antioxidant capacity except rhizome knot, embryo and rhizome. The highest value of receptacle and stamen were observed at the concentration of 500 μg/ml, which was higher than BHT. In addition, the total antioxidant capacity of rhizome knot, embryo and rhizome improved steadily when its corresponding concentrations were gradually increased. At concentration of 500 μg/ml, the total antioxidant activity of all ten lotus extracts is in a descending order of receptacle > stamen > BHT > leaf > flower > seed > seed epicarp > petiole > rhizome knot > embryo > rhizome (p