Chemical Engineering - Mass Transfer - Discussion

Discussion Forum : Mass Transfer - Section 9 (Q.No. 3)
3.
Mechanism of moisture removal in case of freeze drying of food stuff is by
evaporation
sublimation
dehydration
adsorption
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Sagar said:   1 year ago
First food is chilled in the refrigerator and then it is put in a vacuum, so because of the low pressure and small heat provided, frozen water gets sublimated to vapour.

KRR said:   3 years ago
Freeze drying is the removal of ice or other frozen solvents from a material through the process of sublimation and the removal of bound water molecules through the process of desorption.

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