In vitro inhibition of dipeptidyl peptidase IV by peptides derived from the hydrolysis of amaranth (Amaranthus hypochondriacus L.) proteins

► Amaranth is an excellent source of peptides with inhibitory activity of DPPIV. ► Amaranth peptides presented up to 50% inhibition of DPPIV activity. ► Glutelins fraction contains peptides such as IPI known as diprotin A. ► Docking models showed the possible mechanism of action of amaranth peptides.