At a controlled IPA concentration, the three curves were very
similar (Fig. 5(a)). This results, indicate that at a lower temperature,
the solubility of DHSA in IPA was lower, and thus the DHSA
was more readily available, leading to a higher probability to form
larger crystals. The result also indicated that the cooling rate of
−0.6 ◦C/min made DHSA crystals formed at a suitable crystallization
rate because fast crystallization could not provide with enough
time to form a strong structure and stable network, thus forming
fragile DHSA crystals. As reported by Timms (2007), rapid cooling
of a fat always leads to the initial formation of unstable crystals
because nucleation is exponentially dependent on temperature.
Future research should explore the effects of cooling modes (e.g.,
slow, rapid, and pulsed) and dynamic evolution of the DHSA crystallization
process