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Micellar and solubilizing properties of rhamnolipids

Arkhipov, Victor P. (author)
Department of Physics Kazan National Research Technological University Kazan 420015 Russian Federation
Arkhipov, Ruslan V. (author)
Institute of Physics Kazan Federal University Kazan 420008 Russian Federation
Petrova, Ekaterina V. (author)
Department of Analytical Chemistry Kazan National Research Technological University Kazan 420015 Russian Federation
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Filippov, Andrei, PhD, 1957- (author)
Luleå tekniska universitet,Kemiteknik
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 (creator_code:org_t)
2023-03
2023
English.
In: Magnetic Resonance in Chemistry. - : John Wiley & Sons. - 0749-1581 .- 1097-458X. ; 61:6, s. 345-355
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We studied the micellar and solubilizing properties of aqueous solutions of unfractionated rhamnolipids produced by Pseudomonas aeruginosa. We used nuclear magnetic resonance (NMR) diffusometry, dynamic light scattering, and conductometry to measure the critical micelle concentration (CMC) of rhamnolipid solutions and determined the effective hydrodynamic radii of rhamnolipid monomers and micelles. Based on selective measurements of the self-diffusion coefficients of molecules, performed by NMR diffusometry, the solubilizing properties of rhamnolipids were studied depending on their concentration in solution; aromatic hydrocarbons, benzene, toluene, ethylbenzene, and para-xylene were taken as solubilizates. On the basis of the measurement results, we estimated the distribution coefficient of the solubilizate between the micellar (solubilized) and free (in the aqueous phase) states and the solubilizing capacity of rhamnolipid micelles.

Subject headings

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Keyword

aromatic hydrocarbons
CMC
dynamic light scattering
NMR
rhamnolipids
self-diffusion coefficients
solubilization
Chemistry of Interfaces
Gränsytors kemi

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ref (subject category)
art (subject category)

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