“…Wismer-Pederson (1972) used various enzyme preparations and found that bromelin, collagenase, and trypsin were extremely effective for tenderizing the connective tissue collagen. Miyada and Tappel (1956) in their studies of hydrolysis of beef proteins by enzymes found that papain and ficin digested elastin, while Rhozyme P-ll, Protease 15, and Rhozyme A-4 showed slight but definite digestion of elastin.…”