Production of fish protein hydrolizate using enzymatic hydrolysis from fish processing wastes

Abstract

Fish waste can be transformed into nutritionally valuable, functional and easily digestible protein products with high economic value. Studies on the transformation of usable food and bioactive compounds from fish processing wastes and commercial production were focused. Fish protein hydrolyzates (FPH) are used as functional food, animal feed, organic fertilizer and pet food as commercial products, as well as in the field of medicine and pharmacology as they show antihypertensive, antithrombotic, anticancer, immunomodulatory and antioxidant activities with the nutraceutical properties they contain. It shows that the nutritional properties of fish hydrolyzates are more balanced and superior than other protein hydrolyzates. Two different methods, chemical and enzymatic, are used to produce protein hydrolyzate. Recently; It has made the production of hydrolyzate by enzymatic method more attractive as it uses lower temperature, pressure and a pH range of 5-8. The most effective indicator of hydrolysis was used as HD (%). According to the findings obtained from the studies conducted, it has been determined that higher cleaved peptide bonds for protein recovery cause HD (%) to increase. It has been reported that proteins with smaller molecular weights have greater solubility in water, thus increasing the protein recovery of the hydrolyzate and making its functional properties more useful. It is seen that the different values obtained in the studies may vary according to the fish species, waste process, enzyme type, hydrolysis method (temperature, time and enzyme ratio). In this study, the production of fish protein hydrolyzate from fish processing wastes by using enzymatic hydrolysis method was compiled.