How to do freeze drying

The freeze-drying technology goes through three major systems. The first is vacuum. The frozen raw materials are dried at low temperature under vacuum conditions. The raw materials enter the freeze-drying warehouse and are slowly and thoroughly dried. At this time, the raw materials are at about minus 30 degrees. The frozen state, and then start the vacuum system to pump from the standard atmospheric pressure of 100,000 Pa to an almost vacuum state of 70 Pa. The second is heating. Under vacuum conditions, the ice in the raw material directly sublimates into gas. The process of ice turning into gas requires heat absorption, so the heating system needs to be started to promote the sublimation process. The third is the capture system. The gas slowly flying out from the raw materials at about minus 40°C is captured when passing through the collector and freezes again in an instant. After the ice is dissolved, it is discharged from the freeze-drying bin. The entire system is controlled automatically by computer and operated by professional technicians.

Freeze-drying technology was first used in the production of astronaut food because freeze-drying can be stored for a long time and is light and easy to carry. The shape does not shrink, the texture is soft, the water absorbency is good, and it is easy to digest and absorb. And it does not require antioxidants, softeners, etc., and it is a natural and healthy food. ,

Not only freeze-drying for human consumption, freeze-drying for pets also has the above-mentioned advantages of freeze-drying. Therefore, Lonnojing freeze-drying technology is applied to the pet industry, hoping that pets can also eat natural and healthy food. .

The first step in the production process of Lonnuo freeze-drying is to select ingredients. Lonnuo has always advocated the concept of natural freshness, and selects raw materials in strict accordance with international pet food standards. Most of Lonnuo’s fresh ingredients are It is imported high-quality meat, such as salmon imported from Norway, beef imported from Germany, etc.

With fresh ingredients comes freeze-drying technology. The full name of freeze-drying is vacuum freeze-drying. Under vacuum conditions, frozen fresh meat is kept at minus 30 degrees Celsius, and its ice crystals sublimate into gas, and the fresh meat finally Thorough drying process. This is an automated process involving computer control of the vacuum system, refrigeration system and heating system. It requires special equipment and technology and is expensive. Lonnuo attaches great importance to the research and development of freeze-drying technology. The R&D team is composed of well-known veterinarians in the industry, university professors, and masters and doctors in animal nutrition and food majors. It has now developed 12 patented products with independent intellectual property rights.

Lonnuo freeze-drying maintains the fresh nutrition, color, aroma and flavor of the ingredients, making the freeze-drying easy for pets to digest and good in palatability. Grain-free pure meat with a protein content of over 80% and rich nutrition. It is easy to rehydrate, and the freshness and taste of the ingredients can be restored in three minutes after rehydration. Due to freezing technology, it does not contain any additives. Super long shelf life, it can be stored at room temperature for more than 5 years without preservatives. And technologies such as pasteurization and irradiation sterilization are used to ensure food safety. Don't worry about affecting your pet's health.