Pet Food Freeze Dryer: The Difference Between Drying And Freeze Drying

The pet food nutrition comparison freeze-drying technology sublimates the water in the product in a low-temperature vacuum environment, thereby obtaining a dehydrated freeze-dried product. Because the freeze-drying process is carried out at low temperature, the original nutrients, appearance and taste of the product can be well preserved.

Since the development of science and technology, the drying technology has also developed from the traditional drying, air drying, drying and spray drying technology to the current freeze-drying technology. Freeze-drying technology is the most advanced drying technology at present. Freeze-drying technology was first used in the field of biopharmaceuticals, and its application in food originated from aerospace food freeze-drying, so food freeze-drying technology is also called aerospace freeze-drying technology. To put it simply, freeze-drying technology belongs to low-temperature drying technology, while drying belongs to high-temperature drying technology. Freeze-drying technology does less damage to the product. The nutritional content of freeze-dried products is superior to traditional high-temperature drying products, second only to fresh products.

Small Pet Food Freeze Dryer

Drying technology is a traditional high-temperature drying technology, which volatilizes the moisture of the product through heating; although drying is cheap, at high temperature, the product loses a lot of nutrients, and the product shrinks, deforms, and discolors.

Freeze-dried pet food

Compared with the freeze-dried product, it has a porous honeycomb-like sponge structure, and the taste is crisp and loose. Water for pet hydration.

Freeze-dried chicken rehydration

At high temperature, the dried product will shrink and deform, the taste will be dry and hard, the palatability of pets will be poor, and the water rehydration will be poor.

Compared with freeze-drying technology, the preservation time can remove 95% to 99% of the water content of the product. The dehydration of freeze-dried pet food is thorough and light in weight, so it is very convenient to use and carry. The shelf life of sealed packaging at room temperature can be as long as 3-5 years or even longer. The moisture content of the dried product is about 8% to 15%, and it is easy to breed bacteria, mold, and insects when stored for a long time.

Large pet food freeze dryer

Customers provide complete package services for freeze-drying equipment production line projects in the fields of food, biology, pharmaceutical engineering, etc.

Comparison of advantages and disadvantages of drying and freeze-drying processes:

Drying technology

Advantages: low processing cost;

Disadvantages: loss of nutrients, poor palatability and rehydration;

Freeze drying technology

Advantages: almost no loss of nutrients, high palatability, good rehydration, long storage time, and convenient feeding;

Disadvantages: The cost of freeze-drying is higher than that of drying, and freeze-drying equipment cannot be popularized in households at present.