The invention discloses preparation and application of a corn polypeptide with functions of inhibiting amyloglucosidase activity and promoting GLP-1
secretion, and belongs to the technical field of
functional food. And the corn polypeptide is PYPR, PPAPR and PLRP (Poly Lactic
Polymerase Chain Reaction). The corn polypeptide is obtained by enzymolysis of corn
protein through
alkaline protease, and is novel in structure and easy to prepare. The corn polypeptide can inhibit the activity of amyloglucosidase
in vitro, can significantly promote GLP-1
secretion, and can up-regulate the expression of gcg and gc3 genes related to GLP-1 synthesis and a polypeptide recognition
receptor GPR93 by regulating Ca < 2 + > influx and an ATP
signal channel, thereby improving the
steady state of blood glucose. The invention provides reference for developing
functional food or health care products with the functions of reducing
blood sugar and promoting
secretion of
insulin.