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Secretagogues and Growth Factors in Fish and Crustacean Protein Hydrolysates

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The search for new molecules in fish protein hydrolysates is of great interest in animal feeding as it is in aquaculture, fertilizer, cosmetic, and pharmacologic domains. Different sources of hydrolysates such as shrimp waste (Pandalus borealis), cod (Gadus morhua) head, and head and viscera of sardine (Sardina pilchardus), obtained after hydrolysis or autolysis, were tested on fibroblast cell cultures and by gastrin radioimmunoassay. The level of hydrolysis seems to play an important role in the presence of biological peptides. Elution profile on a gel filtration Sephadex G-50 column was used to estimate the degree of hydrolysis of the fractions studied. Growth-factor-like activities were found in less-hydrolyzed fractions. Conversely, the most-hydrolyzed fractions showed gastrin and cholecystokinin immunoreactivity.

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Received January 22, 1999; accepted April 13, 1999

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Cancre, I., Ravallec, R., Van Wormhoudt, A. et al. Secretagogues and Growth Factors in Fish and Crustacean Protein Hydrolysates. Mar. Biotechnol. 1, 489–494 (1999).

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