Question

What foods cannot be freeze dried?

(a) Foods with high fiber content

(b) Foods with high Vitamin B12 content

(c) Foods with high protein content

(d) Foods with high fat content

I got this question in my homework.

Query is from Freeze Drying topic in division Drying of Food Processing Unit Operations

Answer 1

The correct choice is (d) Foods with high fat content

To explain: Most of the foods are suitable for freeze drying like fruits, vegetables, dairy products, meat, dry liquids like soup or yogurt and instant coffee. Foods with high fat are not suitable for freeze drying as the fat melts damages the equipment.