Description
Protease enzymes accelerate protein breakdown in fish fermentation, reducing traditional fermentation times from 12-18 months to 3-6 months while maintaining umami depth.
Technical
Exogenous proteases (typically from Aspergillus or Bacillus strains) hydrolyze fish proteins into peptides and free amino acids, with glutamic acid formation driving umami. Controlled hydrolysis prevents excessive breakdown that would create bitter peptides.
Culinary Significance
Enables consistent year-round production of premium fish sauce with traditional flavor profiles, while reducing histamine risks through controlled fermentation conditions.
Science
Primary Reaction
Proteolysis of fish myofibrillar proteins → oligopeptides + free amino acids
Parameters
Temperature
37°C optimal
30°C to 45°C range
Time
4 months
3 months – 6 months
Equipment