Some metal elements,especially trace elements,have obvious nutritional and physiological functions on the human body,which can promote the growth and development of the body,regulate the function of the body and maintain the metabolism of the human body.Compared with the elements in the form of inorganic salts,metal chelating peptides are more easily absorbed by the human body.Metal chelating peptides efficiently provide various trace elements necessary for life activities,have antioxidant,antibacterial and other biological activities,and have broad application prospects in food,medicine,cosmetics and other fields.In this paper,the methods of preparation,separation and purification of metal chelating peptides from animals and plants were reviewed,the structure-activity relationship and antioxidant activity of metal chelating peptides were analyzed,and the development prospect of metal chelating peptides was prospected.
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