The reaction of bromelain and gelatin dehydration is hydrolysis
Explanation:
Hydolysis is a process where water breaks down one or more chemical bonds. Bromelain a protease(protein digesting enzyme). Gelatin is an animal protein but is a collagen.
These protein are dietary compounds. So, bromelain will digest the animal protein. In other words, protease can be broken down into to polypeptides i.e a polymer,only through the process of hydrolysis. Therefore, bromelain will hydrolyse the peptide bond in gelatin.