Modified peony seed meal protein preparation method

The invention discloses a modified peony seed meal protein preparation method which is as follows: first, peony seed meal protein is extracted from peony seed meal by use of an alkali extraction and freeze drying combined method, and then the peony seed meal protein is modified by strong ultrasonic treatment and phosphorylation modification method. The modified peony seed meal protein preparation method is simple and convenient in operation and low in energy consumption; the modified peony seed meal protein preparation method greatly improves the emulsifying and foaming properties of the peony seed meal protein, the foaming and emulsifying properties of the modified peony seed meal protein are respectively increased by 180% and 71% than that of unmodified protein, the use of the peony seed meal is broadened, and the economic value of the peony seed meal is increased.