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Animals ingest their food, and use pepsin, trypsin and other digestive proteases

ID: 48711 • Letter: A

Question

Animals ingest their food, and use pepsin, trypsin and other digestive proteases to break down the proteins in their food into shorter peptides and ultimately into amino acids, which the animal can then absorb and incorporate into newly-synthesized proteins of its own. Proteases are also found in plants, despite the fact that plants do not ingest their food. For example, you may have noticed the warning on Jell-O boxes that the gelatin will not set if pineapple or kiwi are present; this is because these fruits contain relatively large amounts of proteases, which digest the proteins in gelatin.

Explanation / Answer

certain proteases have been used in food processing rennet ( mainly chymosin) obtained from the fourth stomach of unweaned calves have been used in the production of cheese

proteases are used in baking ( gluten development ) , milk coagulation , flavor development , fish and food processing.