Q: What is freeze drying processing ?
A: Freeze-drying—technically known as lyophilisation, lyophilization, or cryodesiccation—is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport. Freeze-drying works by freezing the material and then reducing the surrounding pressure to allow the frozen water in the material to sublime directly from the solid phase to the gas phase.
Q: How many properties of freeze-dried products?
A: If a freeze-dried substance is sealed to prevent the reabsorption of moisture, the substance may be stored at room temperature without refrigeration, and be protected against spoilage for many years. Preservation is possible because the greatly reduced water content inhibits the action of microorganisms and enzymes that would normally spoil or degrade the substance.
Freeze-drying also causes less damage to the substance than other dehydration methods using higher temperatures. Freeze-drying does not usually cause shrinkage or toughening of the material being dried. In addition, flavours, smells and nutritional content generally remain unchanged, making the process popular for preserving food. However, water is not the only chemical capable of sublimation, and the loss of other volatile compounds such as acetic acid (vinegar) and alcohols can yield undesirable results.
Q: Why freeze dried food is so popular?
A: Freeze-drying is a scientific art, combining science and controlled process to result in beautifully preserved food. It retains the most nutrients than any other food preservation method, and maintains its color and flavor. Freeze-drying is also one of the safest methods of food handling used today.
In the food service environment, freeze-dried products require no further handling. They’re ready to eat or be incorporated into products and recipes. In contrast, frozen foods may need to be thawed, then cut, sliced, or diced. Proper thawing measures can stave off pathogen multipliers, but bacteria flourish at room temperature.
Freeze-dried food can help you deliver clean ingredients to consumers. Not only are freeze-dried products easy and versatile, they have a long shelf life and add unique flavor and texture to your new or existing products.
Q: Why is it right to choose our freeze-drying equipment?
A:Because our freeze-drying equipment has higher efficiency, low failure rate, low energy consumption and high degree of automation.
1. Our freeze-drying equipment does not need extra water to melt ice with its own water.
2. The melting ice of our freeze-drying equipment takes place under vacuum conditions, in the process of operation of the frozen dry equipment, automatically melting ice;
3. We do not need heat preservation, drying tank in the whole freeze-drying process, the outer surface of the hull just at room temperature, we will all focus on material, heat so as to reduce the energy consumption.
4. Our equipment does not need maintenance, and the quality of the equipment represents our service purpose, and we pay more attention to the interests of customers.