Phase equilibria of model milk membrane lipid systems.

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The phase behaviour of mixtures of recombined milk membrane lipids dioleoylphosphatidylcholine (DOPC), sphingomyelin (SM), dioleoylphosphatidylethanolamine (DOPE), phosphatidylinositol (PI) and dioleoylphosphatidylserine (DOPS) in 60% water was examined as a function of temperature between 5 and 90 °C. The aim was to examine under which lipid composition the average properties turn from balanced over to hydrophobic. The phase boundaries were determined by small angle X-ray diffraction (SAXD) and differential scanning calorimetry (DSC). The lamellar phase was dominating in the DOPC/SM/DOPE system. The phase boundary for the reversed hexagonal phase was only observed at high DOPE content within the examined temperature interval. The anionic phospholipids PI and DOPS induced a swollen lamellar phase, but no significant change of the transition between the lamellar phase and the reversed hexagonal phase was observed.
Original languageEnglish
Pages (from-to)59-68
JournalChemistry and Physics of Lipids
Issue number1
Publication statusPublished - 2003

Subject classification (UKÄ)

  • Food Engineering
  • Physical Chemistry


  • Small angle X-ray diffraction (SAXD)
  • Differential scanning calorimetry (DSC)
  • Phase behaviour
  • Milk fat globule membrane (MFGM)
  • Phospholipid bilayer


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