To inquire into five kinds of common fruit protein and the comparison of antioxidant enzyme content, the experiment selected grapes, apple, cherry, peach, pear as experiment material, extraction and determination of average concentration of protein, the activity of SOD and POD. Experimental results show that the average protein content of peach than 80.49% higher than that of apple, peach nutrition value higher. SOD activity was 21.28% higher than apple cherry, 48.92% higher than the pear, so cherry is not easy to save, and removing ability is poor. POD determination results in the highest POD activity of grape, 103.3797 mg/ml, followed by the peaches and pears, and POD activity in apple's lowest, 94.61% lower than the POD activity in grapes.
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