... industry etc. 7.The crude papain is used in the brewing industry for chillproofing beer and lager and the enzyme serum is a very excellent ... whitener; however, its whitening effect is minimal, because the papain is present in low concentrations and is quickly diluted by saliva. It would ... months of use, to have a noticeable effect. It is the main ingredient of Papacarie, a gel used for chemomechanical ...