in vitro studies of lactose hydrolysis in milk with 20-125 neutral lactase units ( nlus ) carried out at 38.0 degrees c for 15 min with a beta-galactosidase derived from kluyveromyces lactis ( lactaid , lactaid inc , pleasantville , nj ) resulted in 85-95 % of the hydrolysis observed with standard incubation conditions ( 24 h at 4-5 degrees c with 1000 nlu/l ) .
C0083183
lactase
C0005220
beta-galactosidase