α-Amylase is a hydrolase enzyme ,and it catalyses the hydrolysis of internal α-1, 4-glycosidic linkages in starch to yield products like glucose and maltose.

Secretin (33-59), rat is a 27-aa peptide, acts on secretin receptor, enhances the secretion of bicarbonate, enzymes, and K+ from the pancreas.

Kentsin, a contraceptive tetrapeptide, is originally extracted from hamster embryos. Kentsin prevents the maturation of Graafian follicles and consequently inhibits ovulation. Kentsin has opiate properties on gastrointestinal motility.