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  • Title: An ESR study of the hydration steps of lecithin multilayers.
    Author: Sanson A, Ptak M, Rigaud JL, Gary-BOBO CM.
    Journal: Chem Phys Lipids; 1976 Nov; 17(4):445-55. PubMed ID: 186205.
    Abstract:
    A spin-labeled stearic acid and other spin-labeled molecules have been used for an ESR study of the hydration process of the egg lecithin lamellar phase for water concentrations, CW greater than 10%. Two hydration steps are found for CW approximately 20% and CW congruent to 30%, in good agreement with results of the literature. To explain discontinuities in the behavior of three spin-labeled molecules at CW congruent to 20%, a conformational change of the phosphatidylcholine polar head and a phase transition in the polar interface are proposed.
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