Adsorption of lipids on silicalite-1
- Authors: Atyaksheva L.F.1, Ivanova I.I.1, Ivanova M.V.2, Tarasevich B.N.1, Fedosov D.A.1
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Affiliations:
- Department of Chemistry
- Research Center of Neurology
- Issue: Vol 91, No 5 (2017)
- Pages: 969-973
- Section: Biophysical Chemistry
- URL: https://journals.rcsi.science/0036-0244/article/view/169505
- DOI: https://doi.org/10.1134/S0036024417050053
- ID: 169505
Cite item
Abstract
The adsorption of egg lecithin and cholesterol from chloroform solutions onto silicalite-1 (hydrophobic silica with MFI zeolite structure) is investigated. Adsorption isotherms of the L-type for lecithin and the S-type for cholesterol are obtained in the 0.05–4.5 mg/mL range of equilibrium lipid concentrations. The maximum adsorption for lecithin is 30 mg/g; for cholesterol it is 70 mg/g. Chloroform treatment results in the desorption of no more than 10% of the lecithin and up to 50% of the cholesterol from the silicalite-1 surface. The lecithin molecules in the monolayer on the silicalite-1 are oriented such that their hydrophobic tails are oriented toward the surface and are partially inside the pores of the adsorbent.
Keywords
About the authors
L. F. Atyaksheva
Department of Chemistry
Author for correspondence.
Email: Atyaksheva@phys.chem.msu.ru
Russian Federation, Moscow, 119991
I. I. Ivanova
Department of Chemistry
Email: Atyaksheva@phys.chem.msu.ru
Russian Federation, Moscow, 119991
M. V. Ivanova
Research Center of Neurology
Email: Atyaksheva@phys.chem.msu.ru
Russian Federation, Moscow, 115478
B. N. Tarasevich
Department of Chemistry
Email: Atyaksheva@phys.chem.msu.ru
Russian Federation, Moscow, 119991
D. A. Fedosov
Department of Chemistry
Email: Atyaksheva@phys.chem.msu.ru
Russian Federation, Moscow, 119991