Quinoa protein and extraction method thereof

The invention provides a quinoa protein and an extraction method thereof. The extraction method comprises the following steps: (A) cleaning quinoa, soaking the quinoa for a period of time, pulverizing the quinoa, adding a NaOH solution, performing stirring for a period of time, and performing preservation at low temperature for more than 24h to obtain quinoa paste; (B) centrifugally treating the quinoa paste to obtain a supernatant, and adjusting the pH to 4-5 so as to obtain a protein precipitation; (C) cleaning, centrifugally separating and freeze-drying the protein precipitation to obtain the quinoa protein. The extraction method of the quinoa protein, provided by the embodiment of the invention, is simple and easy to operate, and operation conditions are mild; a referable method is provided for a subsequent quinoa protein extraction process, and the method has great reference value, and the obtained quinoa protein is high in purity.