[New results about the role of lipase, colipase and bile acids in the fat digestion (author's transl)].

Pancreatic lipase B and a minor specific lipase A are involved in the digestion of fats. The lipolysis is a heterogeneous catalysis. Lipases, colipase(s), bile acids, bile lipids and calcium ions play a role in the lipolysis. Colipase(s) makes it possible for lipase to adsorb to the substrate in presence of bile acids activating the adsorption of lipase and protecting the lipase at the interfaces.