Method for preparing antioxidant chicken protein polypeptide

The invention discloses a method for preparing an antioxidant chicken protein polypeptide. The method comprises the following steps: 1. taking fresh chicken breast and chicken skeleton as raw materials, cleaning and removing blood water in chicken; 2. adding water to cook; 3. using a colloid mill to grind the cooked chicken breast and chicken skeleton; 4. weighing three proteases; 5. adjusting thepH value and temperature, adding the weighed proteases; 6. after the end of an enzymatic reaction, heating and killing the enzyme to obtain an enzymatic hydrolysate; 7. filtering and ultra-filteringthe enzymatic hydrolysate; 8. adding a filtrate obtained in step 7 to a mixing tank, and concentrating to obtain a concentrated liquid; 9. drying the concentrated liquid to obtain the antioxidant chicken protein peptide. The method for preparing the antioxidant chicken protein polypeptide disclosed by the invention can decompose the chicken protein into a polypeptide, has a good flavor, is rich innutrition, and has the cha