Production et caractérisation de fractions protéiques à partir des coproduits de la sole tropicale (Cynoglossus senegalensis) Production and characterization of proteins compounds from tongue sole by-products (Cynoglossus senegalensis)

The by-products (viscera, heads, backbone and skins) of tongue sole coming from a Senegal frozen fisherie plant, were hydrolized with the Protamex® enzyme.Degrees of hydrolysis of 30 and 19% were obtained respectively with 40°C and 50°C.The results also showed that the proteins contained in these by-products are completely solubilized by the action of this protease at the end of 180 minutes of hydrolysis. The biochemical characterization showed that these hydrolysates are rich in proteins (61%) and minerals (10%). However, the hydrolysates contain peptides of lower molecular sizes 1760Da.Lastly, these hydrolysates have high nutritional value in order to set up table fowls because they have in big quantity 9 essential amino acids for the poultry feed.