Optimum pH for enzyme Trypsin is 

Optimum pH for enzyme Trypsin is 8.

Optimum pH of an enzyme is the pH at which the enzyme has maximum activity.
Every enzyme of the human body works best at a particular pH. The enzymes which are present in the stomach works best in acidic medium. Similarly, some enzyme works best in the bbasic medium. Tryspsin is one such enzyme which works best at pH 8.
Trypsin is present in the pancreatic juice secreted by pancreas and is an important proteolytic enzyme, meaning it breaks down proteins.