What is the role of gelatin in bromelain enzyme assay?

In a bromelain enzyme assay, Gelatin acts as a substrate that the bromelain enzyme can hydrolyze. The breakdown of gelatin by bromelain results in the release of amino acids and peptides, which can be quantitatively measured. This measurement allows for the assessment of bromelain activity, as the extent of gelatin digestion correlates with enzyme concentration and activity. Thus, gelatin serves as a crucial indicator in evaluating the efficiency of bromelain.