Freeze drying is known for making food lightweight and easy to store due to the following reasons:
Reduction in Water Content
Freeze drying involves the removal of water from the food by sublimation, where ice directly converts into vapor without passing through the liquid phase. This process significantly reduces the water content of the food, leading to a significant decrease in weight. The removal of water also results in a reduction in volume, making freeze-dried food more compact and easier to store.
Lightweight for Transportation
With the majority of the water removed, freeze-dried food becomes lightweight, which is advantageous for transportation purposes. Whether it is for camping, hiking, or other outdoor activities, freeze-dried food is much lighter to carry compared to fresh or canned food. This makes it convenient for backpackers and travelers who need to pack light and conserve space.
Long Shelf Life without Refrigeration
Due to the low moisture content, freeze-dried food has an extended shelf life. It can be stored at room temperature without the need for refrigeration or freezing, unlike fresh or perishable food items. This eliminates the requirement for bulky and heavy refrigeration equipment and allows for easy storage in pantries, cabinets, or emergency kits.
Freeze-dried food is designed to be rehydrated with water before consumption. Since water is readily available, there is no need to carry additional liquids during transportation. The lightweight and compact nature of freeze-dried food allow for easy rehydration on-site, making it a convenient option for outdoor enthusiasts and emergency situations.
Freeze-dried food takes up less space compared to fresh or canned food. The removal of water results in a reduction in volume, allowing for efficient utilization of storage space. This is particularly beneficial for individuals with limited storage space or those who require compact food options for traveling or stockpiling.
freeze-dried food’s lightweight nature, reduced volume, long shelf life without refrigeration, rehydration convenience, and space efficiency make it a preferred choice for individuals seeking portable, easy-to-store food options. Its compactness and lightweight properties make it ideal for various applications, including outdoor adventures, emergency preparedness, and convenience in everyday life.