What mechanism within the Asian palm civet is theorized to break down proteins responsible for coffee harshness in Kopi Luwak?

Answer

Enzymatic action working on the bean proteins.

The alteration in taste profile, particularly the reduction in bitterness, is widely credited to the digestive system of the Asian palm civet. As the coffee cherries pass through the animal, specific enzymes within the digestive tract engage with the bean material. This enzymatic action is theorized to effectively break down complex proteins that are generally responsible for producing sharp, bitter, or harsh characteristics in coffee when brewed normally. This biological refinement process is what differentiates Kopi Luwak from standard processing methods like wet or dry milling.

What mechanism within the Asian palm civet is theorized to break down proteins responsible for coffee harshness in Kopi Luwak?
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