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Table 1 Advantages and disadvantages of encapsulation technologies

From: Encapsulation of probiotics: past, present and future

Sl. No

Spray drying

Freeze drying

Advantages

1

Rapid drying process

Minimum damages to the product

2

Directly convert the dried powder from the liquid feed

Freeze dried powder can be stored in atmospheric conditions

3

Easy to change the process variables and improve the product quality

Retain the aroma, flavor and nutritional content

4

Products in free-flowing powders

Porous structured powder due to sublimation of water

5

High production efficiency

 

6

Less operator requirement

 

7

Scaleup to large production capacity

 

Disadvantages

8

May not suitable for heat sensitive materials

Lengthy drying time [24 – 36 h]

9

Complex equipment, and requires more area for installation

Complex equipment and difficult to change the process

10

High capital and maintenance cost

High capital and maintenance cost

11

Less thermal efficient

Less thermal efficient