title: Use of acyl phosphonates for the synthesis of inulin esters and their use as emulsion stabilizing agents.
abstract: Inulin, the polydisperse polyfructose, extracted from chicory, was modified via esterification with acyl phosphonates. The grafting of an acyl chain onto the inulin backbone under different conditions led to a highly efficient synthesis of a series of inulin esters, with interesting tensioactive properties. The derivatives were evaluated in oil-in-water (O/W) emulsions with isoparaffinic oil, Isopar M. Therefore, a 2% (w/v) aqueous solution of inulin-based surfactant was used in 50/50 O/W emulsions, in nonelectrolyte, and in electrolyte media, using 1 M MgSO4. Longer acyl chains, e.g., dodecanoyl (C12), hexadecanoyl (C16), and octadecanoyl (C18), with degrees of substitution lower than 0.5, gave rise to the highest emulsion stabilities against coalescence.
authors.affiliation: SynBioC Research Group, Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Gent, Belgium.
authors.forename: Tina M
authors.initials: TM
authors.lastname: Rogge
authors.forename: Christian V
authors.initials: CV
authors.lastname: Stevens
authors.forename: Anton
authors.initials: A
authors.lastname: Colpaert
authors.forename: Bart
authors.initials: B
authors.lastname: Levecke
authors.forename: Karl
authors.initials: K
authors.lastname: Booten
mesh_terms: D045703:Emulsifying Agents / Q000138:chemical synthesis*; D004655:Emulsions; D004952:Esters / Q000138:chemical synthesis*; D007444:Inulin / Q000138:chemical synthesis*; D009821:Oils; D063065:Organophosphonates / Q000737:chemistry*; D014867:Water
chemical_list: D045703:Emulsifying Agents; D004655:Emulsions; D004952:Esters; D009821:Oils; D063065:Organophosphonates; D014867:Water; D007444:Inulin