Functional and bioactive properties of fish protein hydolysates and peptides: A comprehensive review

• Production value added products of fish proteins can be benefit from fish waste.
• Fish protein hydrolysate can be used as food ingredients and additives with desirable characteristics.
• Fish hydrolysates production would lead to the exploration of in vivo studies for health applications.

Global fish processing industries dispose of fish wastes that account for more than 60% of processed fish biomass. In lieu of environmental pollution and disposal problems, these wastes are used to produce fish silage, fishmeal and sauce. They are also utilized for the production of value added products such as proteins, hydrolysates, bioactive peptides, collagen and gelatin. Research on the production of fish protein hydroysates (FPHs) presently focuses on maximizing the industrial potential of fish wastes. Since bioactive peptides containing amino acids hold properties of great interest, this paper reviews current research on the functional and bioactive properties of FPHs with an additional focus on gaps between fish and other hydrolysates, as well as current and future trends for the productive utilization of FPHs.