Bromelain enzyme extracted by enzyme isolation method then purified by ammonium
sulphate salt, ethanol and ultrafiltration membranes. Then filtering and drying is done using
a vacuum dryer. The variables of ammonium sulfate salt concentrations are 10%, 15%, 20%,
25%, and 30%. The properties and bromelain activity of the pineapple extract was
determined. The best result of bromelain enzyme powder from pineapple were precipitated …