does hcl in the stomach denature proteins
The  stomach also secretes a substance called pepsinogen. This secretion  reacts with the strong HCl in the stomach to produce the  protein-digesting enzyme pepsin. This enzyme separates proteins  into intermediate products of digestion, called peptone and  proteose. It accomplishes this depolymerization through a process  known as hydrolysis. 15 people found this useful.