Table 3.

Proteins and protein hydrolysates from seafood wastes, together with the taxa, species and tissue from which they were isolated, and their biotechnological application.

Taxa	Species	Tissue	Product	Biological Activity	Reference
Fish	Johnius belengeri	Skin	Peptides	Antioxidant	[108]
Fish	Rachycentron canadum	Skin	Gelatin derivate	Antioxidant	[109]
Fish	Gadus morhua	Backbones	Protein hydrolysates	Antioxidant	[110]
Fish	Sardinella aurita	Heads and/or entrails	Protein hydrolysates	Antioxidant	[111,112]
Fish	Theragra chalcogramma	Skin	Peptides	Antioxidant	[113]
Fish	Nemipterus japonicus	Muscles	Hydrolysates and peptide fractions	Antioxidant	[114]
Fish	Exocoetus volitans	Muscles	Hydrolysates and peptide fractions	Antioxidant and anti-tumor	[114]
Fish	Parastromateus niger	Viscera	Peptides	Antioxidant	[115]
Fish	Magalaspis cordyla	Viscera	Peptides	Antioxidant	[116]
Fish	Magalaspis cordyla	Skin	Peptides	Antioxidant	[117]
Fish	Otolithes ruber	Skin	Peptides	Antioxidant	[118]
Bivalve	Sepia officinalis	Skin and viscera	Protein hydrolysates	Antioxidant	[119]
Fish	Oncorhynchus keta	Skin	Peptides	Anti-hypertensive	[121]
Jellyfish	Aurelia sp., Cotylorhiza tuberculate, Rhizostoma pulmo	Body	Hydrolyzed peptides	Antioxidant	[122]
Jellyfish	Rhopilema esculentus, Kishinouye	Gonads	Protein hydrolysates	Antioxidant	[123,124]
Red alga	Porphyra spp.	Leaf	Peptides	Anti-diabetic	[125]
Red alga	Porphyra yezoensis	Leaf	Peptides	Anti-thrombotic	[126]