• Protease inhibitors are substances that inhibit the actions
of trypsin, pepsin and other proteases in the gut,
preventing the digestion and subsequent absorption of
protein
• Trypsin inhibitor is a type of serine protease inhibitor that
reduces the biological activity of trypsin
• Trypsin is an enzyme involved in the breakdown of many
different proteins including as part of digestion in humans
and other animals. As a result, protease inhibitors that
interfere with its activity can have an antinutritional effect.