Saliva.
Which includes the enzyme , amylase.
Saliva?
Pepsin is the "digestive juice" that digests proteins.
digestive mucosa
digestive mucosa
Orange juice
no
Bile
Stomach digestive juice, also known as gastric juice, is acidic. It contains hydrochloric acid which helps break down food and kill bacteria in the stomach.
pancreatic juice
yes because it is found in the stomach
saliva
gastric juice