Came across this looking for other things. Some of you may be interested in
how they get lactose-free stuff. I didn't read it, Just saw the title.
Journal of the Science of Food & Agriculture. 76(1), Jan 1998.
FERMENTATION OF CONCENTRATED SKIM-MILK - EFFECTS OF DIFFERENT
PROTEIN/LACTOSE RATIOS OBTAINED BY ULTRAFILTRATION-DIAFILTRATION.
Alvarez F; Arguello M; Cabero M; Riera FA; Alvarez R; Iglesias JR; Granda J.
pp 10-16