News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.



A look at protease enzymes in crustacean nutrition

Food digestion involves digestive enzymes to break down polymeric macromolecules and facilitate nutrient absorption. Enzyme supplementation in aquafeeds is a major alternative to improve feed quality and nutrient digestibility, gut health, compensate digestive enzymes when needed, and may also improve 

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Health & Welfare

Cathepsin enzymes, part 2

Cathepsin D alone and in combination with other cathepsins presents the greatest proteolytic activity on some fish muscles. 

Health & Welfare

Cathepsin enzymes, part 1

Cathepsins B, D and L are considered critical in fish muscle post-mortem modifications or gel softening during the setting of surimi. 


Byproduct utilization for increased profitability, part 1

Protease enzymes are important industrial enzymes that have diverse applications in food, leather, silk and the agrichemical and pharmaceutical industries. Fish are considered one of the richest sources of proteolytic enzymes. 


Enzymes in seafood, part 3

Digestive enzymes in fish can cause post-harvest tissue degradation, an effect that is most pronounced when connective tissue is affected. Some parasites produce enzymes that make seafood appear unsuitable for human consumption. 


Enzymes in seafood, part 2

The most important factors in the loss of quality in seafood are nucleotide catabolism and glycolysis. The rates and pathways of nucleotide degradation vary with species and muscle type. 


Enzymes in seafood, part 1

Enzymes are responsible for postharvest changes in seafood that impact product character­istics and reduce value. The odor of seafood is a direct result of enzyme activity.