Dispersed fat and polysaccharides systems

 elke scholten 90

Project leader: Dr Elke Scholten
Time frame: 2011 - 2015
Project code: FS002
Research theme: Sensory and Structure
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Many protein-based foods contain fats to give the product a creamy feeling and to improve taste. Increased flexibility in the use of appropriate fats and oils would be beneficial when designing foods with a specific fat content and fat composition. Knowledge about the relation between textural properties and fat composition is crucial to this goal. This project aims to identify strategies to control the textural properties of fat-containing foods by changing the distribution of dispersed-fat and to control the hardness of the dispersed phase.

In the case of liquid-oil, the hardness or solid-like behaviour can be controlled by inducing network formation of structural elements in oil. This creates gels known as oleogels; they are similar to hydrogels but contain water instead of oil. We examine the different building blocks of these networks and their underlying mechanisms. Potentially, such oleogels could replace solid fats. To test for potential we examined their stability under different conditions such as temperature and aqueous environments. The knowledge gained could help create guidelines on how to change the food’s texture and how to design reduced-fat or low-solid fat products.

Abstract background, green oil droplets on water surface. Beautiful macro abstraction

Recent publications

Scientific papers in peer-reviewed journals 2014 Naturally amphiphilic proteins as tri-block Janus particles: Self-sorting into thermo-responsive gels View summary
Scientific papers in peer-reviewed journals 2015 High internal phase emulsion gels (HIPE-gels) created through assembly of natural oil bodies View summary
Scientific papers in peer-reviewed journals 2015 Influende of matrix inhomogeneity on the rheological properties of emulsion-filled gels View summary
Scientific papers in peer-reviewed journals 2015 Protein oleogels from protein hydrogels via a stepwise solvent exchange route View summary