Myoglobin as an inhibitor of exopeptidases from Lactobacillus sake

Abstract

The effects of myoglobin on exopeptidases of Lactobacillus sake were determined. Inhibition of the aminopeptidases increased as the myoglobin concentration increased; aminopeptidase 3 was the most affected (90% inhibition). Aminopeptidases 1, 2, and 4 showed similar inhibition levels (around 60%). Myoglobin did not affect tripeptidase activity. Thus, myoglobin could limit amino acid generation in meat systems.