The advantages and disadvantages of freeze-dried cat food.

The advantages and disadvantages of freeze-dried cat food.

Vacuum freeze-drying is a technological measure for meat dehydration and drying. Freeze-drying is generally divided into three main processes: pre-freezing, sublimation drying, and analytical drying. Among them, sublimation and analysis drying are carried out under vacuum conditions, which has great advantages compared with natural air drying, sun drying, and hot air drying. Freeze-drying is carried out at low temperatures and is in a high vacuum state, so it is particularly suitable for many heat-sensitive substances, such as proteins, aromatic amino acids that make up the natural flavor of meat, and vitamins without denaturation or loss of biological vitality. Some easily oxidized substances are protected, and the color, fragrance, taste and nutrients of fresh food are retained.

Drying is carried out in a frozen state, so the volume is almost unchanged, the original structure is maintained, and concentration does not occur. The dried material is loose and porous, and it is sponge-like. After adding water, the original properties are restored almost immediately, that is, the rehydration is fast. , Freeze-dried products are thoroughly dehydrated, have low water content (2% to 5%), light weight, and convenient storage and transportation.

After reading the above, I think freeze-drying is very good. If you use freeze-drying to feed cats, you can almost restore the dietary life of cat hunters. Then I’m talking about some things you may not know about freeze-drying. As we said above, the entire freeze-drying process requires low-temperature production. If the temperature is too high during the drying process, the nutrients will also be lost at the high temperature. During the drying process of freeze-drying, most of the temperature is controlled in a lower range, but the drying speed is very slow at such a low temperature. In order to maximize the use of the machine and pursue the maximization of profits, some manufacturers cannot wait so long. It will accelerate during the drying process, so that the temperature will be increased during the drying stage. The final freeze-dried grain may not be freeze-dried but should be called drying or roasting, although it will retain more nutrients in a vacuum environment than ordinary heating and drying.

There is another thing you may not know about freeze-drying, which is the raw material. Because the freeze-drying process can hardly sterilize and can only inhibit the growth of microorganisms, it is really important whether the raw materials themselves are well-preserved and high-quality raw materials. Using better quality raw materials with fewer microorganisms and improper storage of raw materials can easily lead to the proliferation of microorganisms.

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