title: Hydrophilic carotenoids: surface properties and aggregation behavior of a highly unsaturated carotenoid lysophospholipid.
abstract: The water dispersibility of a hydrophobic carotenoid has been greatly enhanced by using it as the acyl part in the synthesis of a highly unsaturated lysophospholipid. Dynamic light scattering has revealed the formation of stable aggregates with an average hydrodynamic radius of a few nanometers, and absorption spectra show that the aggregates can withstand the addition of ethanol or acetonitrile until the volume fraction of water falls below 70 and 62%, respectively. The properties of the carotenoid phospholipids have been characterized by determining surface tension, critical micelle concentration, surface concentration, molecular area, free energy of adsorption and micellation, adsorption-micellar energy relationship, and equilibrium constants.
authors.affiliation: Department of Chemistry, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
authors.forename: Bente Jeanette
authors.initials: BJ
authors.lastname: Foss
authors.forename: Hans-Richard
authors.initials: HR
authors.lastname: Sliwka
authors.forename: Vassilia
authors.initials: V
authors.lastname: Partali
authors.forename: Stine Nalum
authors.initials: SN
authors.lastname: Naess
authors.forename: Arnljot
authors.initials: A
authors.lastname: Elgsaeter
authors.forename: Thor-Bernt
authors.initials: TB
authors.lastname: Melø
authors.forename: K Razi
authors.initials: KR
authors.lastname: Naqvi
mesh_terms: D002338:Carotenoids / Q000737:chemistry*; D008027:Light; D008244:Lysophosphatidylcholines / Q000737:chemistry*; D008823:Micelles; D012542:Scattering, Radiation; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D013816:Thermodynamics; D014867:Water / Q000737:chemistry*
chemical_list: D008244:Lysophosphatidylcholines; D008823:Micelles; D013501:Surface-Active Agents; D014867:Water; D002338:Carotenoids