Sucrose Solutions as Prospective Medium to Study the Vesicle Structure: SAXS and SANS study
M. A. Kiselev, P. Lesieur, A. M. Kisselev, D. Lombardo, M. Killany, S. Lesieur
Abstract
The possibility to use sucrose solutions as medium for X-ray and neutron small-angle scattering experiments has been explored for dimyristoylphosphatidylcholine (DMPC) vesicles and mixed DMPC/C(12)E(8) aggregates. The influence of sucrose concentration on phospholipid vesicles size and polydispersity has been investigated by complimentary X-ray and neutron scattering. Sucrose solutions decreased vesicle size and polydispersity and increased a contrast between phospholipid membrane and bulk solvent sufficiently for X-rays. 40% sucrose in H2O increased X-ray contrast by up to 10 times compared to pure H2O. The range of sucrose concentration 30%-40% created the best experimental conditions for the X-ray small-angle experiment with phospholipid vesicles.
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