Correlation of Kudoa Spore Counts with Proteolytic Activity and Texture of Fish Mince from Pacific Hake (Merluccius productus)
2007
ABSTRACT Sixteen batches of fish mince prepared using fillets from Pacific hake (Merluccius productus) harvested near Vancouver Island, Canada were studied for possible correlations of Kudoa spore counts with proteolytic activity and cooked texture. The fish were mainly infected by K. paniformis, and Kudoa spores were distributed throughout 7 sampling sites on 13 individual hake fish tested. Proteolytic activity of fish homogenate was optimum within the range of pH 5.25–5.50 and 52–55°C. Significant (p < 0.05) correlations were observed among fish mince K. paniformis spore counts, endogenous proteolytic activity, cooked texture measured as maximum compression force (g), and the change in free amino groups during autolysis.
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