Cooling and freezing Flashcards
1
Q
Advantages of cooling and freezing
A
Reduction in Aw
Reduction in rates of reaction
Maintain product quality
2
Q
Disadvantages of cooling and freezing
A
Degrades pigments
Vitamin loss
Oxidation of lipids
Energy expenditure
3
Q
What is sensible heat?
A
Temperature reduces
4
Q
What is latent heat?
A
Phase changes
5
Q
What are some factors that effect freezing time?
A
Size and shape
Thermal conductivity
Surface heat transfer coefficient
Temperature difference
