Hydrolyzed chicken sternal cartilage extract, method for producing the same and use thereof

A concentrated and spray dried hydrolyzed chicken sternal cartilage extract for treating osteoarthritis in a human in need thereof, which is produced by a method consisting essentially of the following steps:

• a) grinding chicken sternal cartilage and adding water to form a solution;
• b) adjusting the pH of the solution to 7.0 and heating the solution to 55° C.;
• c) adding an alkaline protease and an flavourzyme to the solution for enzymatic hydrolysis to form;
• d) after the enzymes are inactivated, centrifuging and then collecting supernatant of the solution;
• e) filtering the supernatant with a cloth and collecting the filtrate of the supernatant to obtain the hydrolyzed chicken sternal cartilage extract;
• and
• f) spray drying and vacuum concentrating the hydrolyzed chicken cartilage extract until the hydrolyzed chicken cartilage extract for treating osteoarthritis in a human in need thereof is formed;
• wherein the type II collagen content of the hydrolyzed chicken cartilage extract is ≥50% and the chondroitin sulfate content of the hydrolyzed chicken cartilage extract is ≥20%.