The invention belongs to the technical field of medicines, and discloses an ultrasonic-assisted mineral chelated almond
peptide as well as a preparation method and application thereof. The method comprises the following steps of 1) in a
phosphoric acid buffer solution, carrying out enzymolysis on almond
protein by adopting
protease under an ultrasonic condition, deactivating
enzyme, centrifuging, taking supernatant, and carrying out
freeze drying to obtain almond polypeptide, 2) in a
solvent, chelating and centrifuging the almond polypeptide and minerals under an ultrasonic condition, taking supernatant, and freeze-
drying to obtain ultrasonic-assisted mineral chelated almond
peptide. The minerals are water-soluble ferrite, water-soluble
calcium salt and water-soluble
zinc salt; and the
solvent is water and / or a
phosphate buffer. The chelated almond
peptide containing multiple minerals is obtained through ultrasonic assistance and
chelation of different minerals, the yield is high, the
oxidation resistance is good, and meanwhile multiple mineral nutrients are provided. The method provided by the invention is simple. The prepared ultrasonic-assisted mineral chelated almond peptide is used as an
antioxidant peptide, and is used in the fields of food, health products and / or medicines.