Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6664447 | Journal of Food Engineering | 2018 | 10 Pages |
Abstract
The strength of the capillary bridges, measured through the rheological characterization of the structured oil suspensions, depends on (a) the surface properties of the particles (in both cases prevalently hydrophilic, with the three-phase contact anglesâ¯<â¯90°), (b) the fraction of added water, and (c) the mean particle size of the residues. In fact, the suspensions prepared with high-pressure homogenized particles (70â¯MPa, 3 passes) exhibit an apparent yield stress more than one order of magnitude higher than those prepared with coarser, high-shear mixed particles (>100â¯Pa vs.â¯<â¯10â¯Pa). Finally, also the addition of a surfactant to the water phase dramatically affects the formation of the capillary bridges, reducing the interfacial tension at the oil/water interface. These results suggest a potential alternative route to vegetable oil structuring, to develop innovative foods and food ingredients based on low-calorie, health-beneficial agri-food residues, which not only induce the formation of a oleogel structure, but which also replace a fraction of the lipids.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Waleed Mustafa, Gianpiero Pataro, Giovanna Ferrari, Francesco Donsì,