Sorption isotherms and swelling of POPC in H2O and 2H2O

Abstract The hydration and swelling properties of 1-palmitoyl-2-oleoyl-glycerophosphatidylcholine (POPC) in ordinary (H 2 O) and heavy ( 2 H 2 O) water were examined to clarify the influence of the isotopically different water species on these features. Neither the swelling curves, nor the sorption isotherms and the empirical hydration forces of the two systems show measurable isotope effects.