An Improved Method for the Preparation of Fish Protein Concentrate from Cod

Abstract

A high quality fish protein concentrate can be produced from cod fillets by extraction with suitable isopropanol–water mixtures. A process has been developed, on a pilot plant scale, for the production of high quality fish protein concentrate from skinned cod fillets by this method. It is white in colour and of soft texture and for all practical purposes tasteless and odourless. The analysis on a moisture-free basis, of a typical sample shows the following protein (N × 6.25), 96%; ash, 5%; lipids, 0.033%. The moisture remaining in the product after drying is approximately 4%. The yield of protein concentrate (approx. 4% moisture) is between 12 and 15%.