2.6.2 Rheological properties
The rheological properties of emulgels and oleogels were analyzed using an HR-2 Discovery Hybrid Rheometer (TA Instruments, New Castle, DE, USA). A parallel plate (diameter 40 mm, gap of 1 nm) was used during measurements. Results were obtained and analyzed using parameters described in a previous study (Willett & Akoh, 2019). Temperature was controlled with a Peltier Plate Temperature System (TA Instruments, New Castle, DE, USA). All experiments were conducted in triplicate. Data was collected using Trios software (TA Instruments, New Castle, DE, USA).
Oleogel and emulgel samples were first placed onto the Peltier plate and cooled to the starting temperature of 0 °C (± 0.1 °C) for 10 min. Heating–cooling sweeps were performed between the temperature of 0 – 60 °C at a rate of 2 °C min−1 with a fixed frequency of 1 Hz and 2% strain. This was done to help evaluate the formation process for each gel. Changes in both the storage modulus (G′) and loss modulus (G″) were evaluated as a function of temperature. All measurements were taken in triplicate.