The enzyme that is not present in succus entericus is:

Step-by-step solution

The intestinal mucosal epithelium has goblet cells that secrete mucus. The secretions of the brush border cells (crypts of Lieberkuhn) of the mucosa along with the secretions of the goblet cells constitute the intestinal juice or succus entericus. This intestinal juice contains a variety of enzymes like disaccharidases (e.g., maltase), dipeptidases, lipases, nucleosidases, etc.