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An ESR study of the anchoring of spin-labeled stearic acid in lecithin multilayers

✍ Scribed by A. Sanson; M. Ptak; J.L. Rigaud; C.M. Gary-Bobo

Publisher: Elsevier Science
Year: 1976
Tongue: English
Weight: 608 KB
Volume: 17
Category: Article
ISSN: 0009-3084
DOI: 10.1016/0009-3084(76)90045-1

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✦ Synopsis

In egg lecithin-water lamellar phases, spin-labeled stearic acid gives two superimposed ESR spectra which are only well resolved when the temperature is greater than 30 degrees C. These two spectral components are attributed to the dissociated and non-dissociated forms of the fatty acid carboxylic group, anchored at two different positions in the polar interface constituted by the hydrated lipid polar heads. Results on such interactions of other functional groups (spin-labeled fatty ester and fatty alcohol) are also presented.

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