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.