The molecular weight of the porcine pancreas enzyme is 51,000 - 54,000 daltons, and its optimum pH is 7. D-glucose units yielding a mixture of maltose and glucose. The enzyme is inhibited by urea and other amide reagents. Cl- is essential for activity. Crystalline suspensions in sodium-calcium chloride are stable for several months refrigerated.
Lyophilization causes inactivation.
C. Do not freeze. Enzymes of Starch Degradation and Synthesis in Advances in Enzymology , Vol. Crystalline Pancreatic Amylase. Improved Method for Its Preparation from Hog Pancreas Glands and Additional Studies of its Properties . AA Chromatographically purified.