Ultrasonic-Standing-Wave-Crystallized Oleogels Characterized via Oscillatory Rheology

Ultrasonic standing waves, have been shown by our research group, to change the mechanical properties of crystallizing monoglyceride oleogels, which are viscoelastic lipid-based materials featuring a 3D network of structuring molecules. Oleogels are a potentially healthier alternative to traditional fats, such as butter, margarine, and shortenings. Here, we continue our research on ultrasonic-standing-wave-treated oleogels by investigating their mechanical properties through linear and non-linear oscillatory shear rheology. We found that the mechanical response of the treated oleogels is more elastic at lower strains and more viscous at higher strains when compared to reference samples, while the overall shape of the response curves remains similar. Through characterization of ultrasound-standing-wave-treated oleogels, we expand the previous knowledge of the state-of-the-art lipid-based materials.