The pancreas is an elongated, yellowish gland that is situated behind the stomach.
The pancreas secretes an important digestive juice known as pancreatic juicee. It secretes important proteolytic enzymes such as trypsin, chymotrypsin etc.
These enzyme are active in alkaline medium as pancreatic juice has a range of pH between 7.8 and 8.4.
Final answer:
Pancreatic enzymes work best in an alkaline medium.