• Applied Chemistry for Engineering
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• v.34 no.5
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• pp.501-506
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• 2023

Oleogel and oleogel emulsions of sunflower oil were prepared using sucrose ester and ceramide as mixed gelators. The crystal structure of the gelator in the oleogels and oleogel emulsion formulations was observed with a polarized optical microscope, and the dispersion form of water was confirmed with confocal laser scanning microscopy. Through the DSC thermogram analysis, it was confirmed that the crystal structure of ceramide disappeared when sucrose ester and ceramide were mixed, and the crystallinity of the mixed gelator increased further when water was added to the formulation. Changes in rheological properties such as viscosity and viscoelasticity according to the ratio of sucrose ester, ceramide, and water in the formulation were examined. As the content of ceramide and water increased, the viscosity, storage modulus, and loss modulus all increased, and the stability of the formulation also tended to increase.

• Journal of Microbiology and Biotechnology
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• v.32 no.12
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• pp.1573-1582
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• 2022

In this study, we investigated the optimal conditions for 3D structure printing of alternative fats that have the textural properties of lard using beeswax (BW)-based oleogel by a statistical analysis. Products printed with over 15% BW oleogel at 50% and 75% infill level (IL) showed high printing accuracy with the lowest dimensional printing deviation for the designed model. The hardness, cohesion, and adhesion of printed samples were influenced by BW concentration and infill level. For multi-response optimization, fixed target values (hardness, adhesiveness, and cohesiveness) were applied with lard printed at 75% IL. The preparation parameters obtained as a result of multiple reaction prediction were 58.9% IL and 16.0% BW, and printing with this oleogel achieved fixed target values similar to those of lard. In conclusion, our study shows that 3D printing based on the BW oleogel system produces complex internal structures that allow adjustment of the textural properties of the printed samples, and BW oleogels could potentially serve as an excellent replacement for fat.