Digestion by pancreatic juice

Pancreatic juice is alkaline due to the presence of NaHCO3 in it. The Pancreatic juice contains several different enzymes which catalyse the digestive reaction are as follows: Trypsinogen, Chymotrypsinogen and procarboxypeptidase are inactive proteases, amylopsin as a carbohydrases, steapsin as a lipase and the ribonuclease as nuclease. The small amount of trypsinogen is activated by the conzyme enterokinase in the intestinal juice and is converted in to active trypsin. The trypsin, so formed converts the rest of the trypsinogen in to trypsin, chymotrypsinogen in to chymotrypsin and procarboxypeptidase in to carboxypeptidase. These active proteases (trypsin, chymotrypsin and carboxypeptidase) catalyse the conversion of proteins, proteoses and peptones in to polypeptides, peptides and amino acids. Amylopsin is a very active which catalyses the conversion of glycogen and starch in to maltose. Steapsin catalysis the conversion of emulsified lipids in to fatty acids and glycerol. While the ribonuclease catalyses the conversion of RNA in to mono and dinucleotides. All the enzymes of pancreatic juice are active only in alkaline medium. During digestion process in the duodenum, the hormone enterogastrone secreted from the duodenum inhibits and finally stops the secretion of gastric juice from the gastric glands while the other two hormones enterocrinin and duocrinin-secreted directly in to blood stream stimulate the intestinal glands to secrete intestinal juice actively.