Biopolymer-based structuring of liquid oil into soft solids and oleogels using water-continuous emulsions as templates

Physical trapping of a hydrophobic liquid oil in a matrix of water-soluble biopolymers was achieved using a facile two-step process by first formulating a surfactant-free oil-in-water emulsion stabilized by biopolymers (a protein and a polysaccharide) followed by complete removal of the water phase...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 31(2015), 7 vom: 24. Feb., Seite 2065-73
1. Verfasser: Patel, Ashok R (VerfasserIn)
Weitere Verfasser: Rajarethinem, Pravin S, Cludts, Nick, Lewille, Benny, De Vos, Winnok H, Lesaffer, Ans, Dewettinck, Koen
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Emulsions Gels Plant Oils Polysaccharides, Bacterial Sunflower Oil Water 059QF0KO0R Gelatin mehr... 9000-70-8 xanthan gum TTV12P4NEE
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520 |a Physical trapping of a hydrophobic liquid oil in a matrix of water-soluble biopolymers was achieved using a facile two-step process by first formulating a surfactant-free oil-in-water emulsion stabilized by biopolymers (a protein and a polysaccharide) followed by complete removal of the water phase (by either high- or low-temperature drying of the emulsion) resulting in structured solid systems containing a high concentration of liquid oil (above 97 wt %). The microstructure of these systems was revealed by confocal and cryo-scanning electron microscopy, and the effect of biopolymer concentrations on the consistency of emulsions as well as the dried product was evaluated using a combination of small-amplitude oscillatory shear rheometry and large deformation fracture studies. The oleogel prepared by shearing the dried product showed a high gel strength as well as a certain degree of thixotropic recovery even at high temperatures. Moreover, the reversibility of the process was demonstrated by shearing the dried product in the presence of water to obtain reconstituted emulsions with rheological properties comparable to those of the fresh emulsion 
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650 7 |a Gelatin  |2 NLM 
650 7 |a 9000-70-8  |2 NLM 
650 7 |a xanthan gum  |2 NLM 
650 7 |a TTV12P4NEE  |2 NLM 
700 1 |a Rajarethinem, Pravin S  |e verfasserin  |4 aut 
700 1 |a Cludts, Nick  |e verfasserin  |4 aut 
700 1 |a Lewille, Benny  |e verfasserin  |4 aut 
700 1 |a De Vos, Winnok H  |e verfasserin  |4 aut 
700 1 |a Lesaffer, Ans  |e verfasserin  |4 aut 
700 1 |a Dewettinck, Koen  |e verfasserin  |4 aut 
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