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

(2015) LANGMUIR. 31(7). p.2065-2073
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Abstract
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.
Keywords
rheology, protein-polysaccharides, biopolymer, emulsions, Oleogels, HIGHLY CONCENTRATED EMULSIONS, PROTEIN-POLYSACCHARIDE INTERACTIONS, LUBRICATING GREASES INFLUENCE, CASTOR-OIL, BETA-LACTOGLOBULIN, IOTA-CARRAGEENAN, PHASE-SEPARATION, XANTHAN GUM, DROPLETS, RHEOLOGY

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Chicago
Patel, Ashok, Pravin Segar Rajarethinem, Nick Cludts, Benny Lewille, Winnok De Vos, Ans Lessafer, and Koen Dewettinck. 2015. “Biopolymer-based Structuring of Liquid Oil into Soft Solids and Oleogels Using Water-continuous Emulsions as Templates.” Langmuir 31 (7): 2065–2073.
APA
Patel, A., Rajarethinem, P. S., Cludts, N., Lewille, B., De Vos, W., Lessafer, A., & Dewettinck, K. (2015). Biopolymer-based structuring of liquid oil into soft solids and oleogels using water-continuous emulsions as templates. LANGMUIR, 31(7), 2065–2073.
Vancouver
1.
Patel A, Rajarethinem PS, Cludts N, Lewille B, De Vos W, Lessafer A, et al. Biopolymer-based structuring of liquid oil into soft solids and oleogels using water-continuous emulsions as templates. LANGMUIR. 2015;31(7):2065–73.
MLA
Patel, Ashok, Pravin Segar Rajarethinem, Nick Cludts, et al. “Biopolymer-based Structuring of Liquid Oil into Soft Solids and Oleogels Using Water-continuous Emulsions as Templates.” LANGMUIR 31.7 (2015): 2065–2073. Print.
@article{5683544,
  abstract     = {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.},
  author       = {Patel, Ashok and Rajarethinem, Pravin Segar and Cludts, Nick and Lewille, Benny and De Vos, Winnok and Lessafer, Ans and Dewettinck, Koen},
  issn         = {0743-7463},
  journal      = {LANGMUIR},
  keyword      = {rheology,protein-polysaccharides,biopolymer,emulsions,Oleogels,HIGHLY CONCENTRATED EMULSIONS,PROTEIN-POLYSACCHARIDE INTERACTIONS,LUBRICATING GREASES INFLUENCE,CASTOR-OIL,BETA-LACTOGLOBULIN,IOTA-CARRAGEENAN,PHASE-SEPARATION,XANTHAN GUM,DROPLETS,RHEOLOGY},
  language     = {eng},
  number       = {7},
  pages        = {2065--2073},
  title        = {Biopolymer-based structuring of liquid oil into soft solids and oleogels using water-continuous emulsions as templates},
  url          = {http://dx.doi.org/10.1021/la502829u},
  volume       = {31},
  year         = {2015},
}

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