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 g
An ESR study of the hydration steps of lecithin multilayers
β Scribed by A. Sanson; M. Ptak; J.L. Rigaud; C.M. Gary-Bobo
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 751 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0009-3084
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β¦ Synopsis
A 8pia-tabeted steark acid and otheg tl~ mokcul~ have been used for an ESR study of the hydration larOOet, of the ell k.c/th~ htmellag phase for water concentrations. C W > 10~. Two hydration steps art found fm C w _-20~ and C W = 30%, in good agreement with retells of the lttetatme. To explain dmconttnuitles in the behavior of three spin-tabelmd motecutes at C W -__ 20~ a coaformatioul change of the photphsttdy~ pohu head and a pha~ transition in the pets: tnte~'tce me
π SIMILAR VOLUMES
The motion of the cholestane spin label in oriented lecithin-cholesterol multibilayers is described in terms of a rotational diffusion about the long molecular axis with diffusion coefficient D parrell and a restricted random librational motion about axes perpendicular to the long axis with diffusio