[Effect of monochromatic light on oxygen transport across the multibilayer lecithin film pigmented wih carotene].

The permeability of beta-carotene-pigmented lecithin multibilayer was studied under the effect of monochromatic illumination for O2 in media with various ionic composition. It is shown that illumination of film within the 400 to 500 nm wavelengths causes a decrease in the permeability of the multibilayer for O2. The effect of light depends on the cation type. Hydration of the multilbilayer within the NaCl solution recovers the permeability of the system after switching of the light. In CaC12 solutions the light reaction is more pronounced but after the light switching off there is no the reversible recovery of the permeability for O2.