Fish protein hydrolysate having a bone-stimulating and maintaining activity, nutraceutical and pharmacological compositions comprising such a hydrolysate and method for obtaining same
The present invention relates to a fish protein hydrolysate having a biological activity of interest, in particular an effect on the stimulation and maintenance of bone. The fish protein hydrolysate is characterized in that it is obtained by enzymatic hydrolysis of at least one protein source selected from the fish species Micromesistius poutassou, Clupea harengus, Scomber scombrus, Sardina pilchardus, Trisopterus esmarki, Trachurus spp, Gadus morhua, Pollachius virens, Melanogrammus aeglefinus and Coryphaenoides rupestris, and the species of fish belonging to the order Siluriformes, said enzymatic hydrolysis being carried out by means of an endopeptidase enzyme derived from Bacillus subtilis. The protein hydrolysate according to the invention makes it possible to maintain the bone mass or to stimulate bone growth through stimulation of osteoblast cell growth and inhibition of osteoclast cell growth.