title: Phase equilibria of model milk membrane lipid systems.
abstract: 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 degrees 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.
authors: Division of Food Technology, Lund University, P.O. Box 124, S-22100, Lund, Sweden. Rianne.Waninge@livsteki.lth.se
authors: Rianne
authors: R
authors: Waninge
authors: Tommy
authors: T
authors: Nylander
authors: Marie
authors: M
authors: Paulsson
authors: Björn
authors: B
authors: Bergenståhl
mesh_terms: D000818:Animals; D000838:Anions / Q000737:chemistry; D002152:Calorimetry, Differential Scanning; D008563:Membrane Lipids / Q000737:chemistry*; D008892:Milk / Q000737:chemistry*; D008956:Models, Chemical; D012996:Solutions; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D000838:Anions; D008563:Membrane Lipids; D012996:Solutions