Other Methods of Drying

Question 1

4 other methods of drying?

Answer 1

Osmotic dehydration,
Foam-mat drying,
Freeze drying or lyophilization,
Tower drying

Question 2

it uses of high sugar concentration

Answer 2

Osmotic dehydration

Question 3

process through convection
drying in warm air

Answer 3

Foam-mat drying

Question 4

process of drying foods in the frozen state

Answer 4

Freeze drying or lyophilization

Question 5

it uses dehumidified air at 30ºC or lower

Answer 5

Tower drying

Question 6

other term for Freeze drying

Answer 6

lyophilization

Question 7

Tower drying uses dehumidified air at ____ºC or lower

Answer 7

30

Question 8

give the advantages of osmotic drying

Answer 8

● Minimum damage to color and volatile flavors
● the use of sugar as an osmotic agent lessens the loss of fresh flavor
● The high sugar concentration prevents enzymatic browning

Question 9

give the advantages of freeze drying

Answer 9

● Freeze dried products are relatively stable because of the lower moisture content obtained
● There’s no microbial growth and little enzymatic change
● It gives an end product that reconstitutes easily to a volume comparable to that of the raw materials
● The texture, appearance, flavor and nutritive value of freeze-dried products are comparable to fresh or frozen foods and
● The product has a long shelf –life and requires no refrigeration.

Question 10

why is there no microbial growth in freeze drying?

Answer 10

because of the low temperature employed