Cysteine protease

Bromelain is a class of thiol protease (cysteine protease) mixtures primarily derived from pineapple juice, peel, and stem tissues. It is typically a pale yellow to light brown amorphous powder with a slight characteristic odor, and an approximate molecular weight on the order of 3.3 × 10^4.

Papain is one of the most representative cysteine proteases in the latex of unripe papaya fruit. With relatively mild reaction conditions, broad substrate tolerance, and good formulatability, it has long supported applications in food processing, industrial processing aids, biological sample ...