Technology For Drying And Storing Fresh Strawberries Using Freeze-Drying Machines

Strawberries must be prepared and preserved in large quantities as soon as they are collected. The traditional method is to freeze the strawberries, but this approach has many disadvantages, such as a limited shelf life, rapid degradation, and a decrease in taste and quality. Vacuum freezing is thus a relatively new method of preserving strawberries. Using freeze-drying technology in a low-temperature, vacuum atmosphere, the natural strawberry flavor, and nutritional value can be maintained. The strawberry can be transported easily and stored at room temperature for one to three years once 95–99% of the water has been removed.

More than 95% of the moisture from food is removed using the vacuum freezing method of the freeze-drying equipment in a high vacuum environment. The following procedures are necessary for vacuum-freezing strawberries:

1.  Cleaning and removal: After washing the strawberry in clean water, remove it;
2.  Drain: Drain after cleaning to reduce the labor required for freeze-drying;
3.  slicing: cut through the grain with a microtome;
4.  The strawberries should be pre-cooled by being placed in a -35 to -40°C quick-freezing warehouse and frozen until the material achieves a temperature of around -35°C in the center.
5. Vacuum treatment: Frozen strawberries are placed in the vacuum freezer, where the pressure is rapidly reduced to turn the solid ice into a gas, which is then taken out by the condenser. Typically, it takes 18 to 24 hours.
6.  packaging is sealed: Strawberries that have been vacuum-treated should be put in a bag and sealed. This protects the strawberries from the effects of oxygen and dampness.

The benefits of Vacuum Freezing Dried strawberries for preservation are obvious. Dried strawberries can be vacuum frozen to increase shelf life and maintain fresh flavor while also preventing nutritional loss. This is because vacuum freezing preserves the nutrients in strawberries at low temperatures and prevents oxidation or deterioration.

Generally speaking, freeze-drying strawberries is a particularly helpful method of preserving them. If you want to try this procedure at home, think about utilizing a small vacuum freezer and the preceding steps with your strawberries. Whether you're storing strawberries at home or treating and selling them for a living, vacuum freezing is a terrific approach for handling strawberries.