⑤ Protein hydrolysates (FPH) from fish and shellfish
1. FPH is a mixture of proteinaceous fragments
2. Prepared extensively by digestion of whole fish or other aquatic animals, parts thereof using
proteolytic enzymes
3. The hydrolysis process breaks down the protein into smaller peptides to obtain water-soluble
product
A. Substrate
1. The raw materials are minced and mixed with an equal amount of water
2. By products from filleting, by-catch fishes from trawlers, small underused lean fish species or krill
B. Hydrolysis
1. Proteolysis is carried out by autolysis and/or by addition of a preparation of hydrolytic enzymes
2. Enzyme addition improves the hydrolysate yield
3. The enzymes are added at optimal hydrolytic temperature under stirring
4. At the end of the incubation period, the enzymes are inactivated by heating to above 80-90℃