Freezing point, freezing time and freezing rates were determined
from the cooling curves. The freezers showed slow freezing rates ranging from 0.10 to 0.40 cm/h.
The quick freeze function improved the freezing process, as it significantly reduced the freezing times by
significantly increasing freezing rates. Tf of the tilapia fish burger was (2.7 ± 0.1) C and no significant
difference between freezing rates and the DSC method was observed. This investigation demonstrated
that the cooling curve method using a simple experimental apparatus and domestic refrigerators can
be used to measure freezing point of high moisture foods.