1-What is Freeze-Dried Food( FD FOOD)?
Freeze-dried food is quick freezing, ice vacuum dehydration, preserved the original color, aroma, taste, nutrition composition and the appearance of the original material, and it has good water, and do not contain any additives,it is an ideal natural health food.
Freeze-dried food is short for vacuum freeze drying food, also calls the FD food.

2-Processing Flow Chart of FD FOOD
Freeze drying is a form of dehydration technology that is used to carefully extract water from a wide range of products. The process and its benefits are explained in the presentation below.
1) Freezing
There are 3 main steps to the process.
All products are first frozen. Freezing is carried out quickly to minimise the size of ice crystals in the product.
2) Primary drying
This stage is used to remove free and surface water.
Pressure is reduced to typically below 1mbar.
Temperature is slowly raised by conduction to sublimate the water. Water vapour is captured on condenser plates as solid ice.
3) Secondary drying
This is the longest part of the processing time. It is required to remove water that is tightly or chemically bound inside the product. Products
are dried down to around 2% moisture.

3-Advantage of FD FOOD
1)Easy to storage for long-time and long-term transportation
2)Keep fresh and nutrient
3)Keep shape, color and taste
4)Easy to eat

4-Application & Usage
1)Biscuits & bakery products
2)Snack food
3)Fast food
4)Confectionary
5)Nutritional products