Food vacuum storage and preservation technology

Storage under reduced pressure is to put the product in a closed and cooled container, and pump it with a vacuum pump to obtain a lower absolute pressure, the pressure of which depends on the characteristics of the item and the storage temperature. When the required low pressure is reached, fresh air is continuously passed through the pressure regulator, humidifier, and approximately saturated humidity into the storage room. The vacuum pump is constantly working, and the items are constantly getting fresh, moist, low pressure, low oxygen air. This technology not only preserves the moisture in the product, but also reduces the consumption of vitamins, organic acids and chlorophyll and other nutrients. At the same time, the storage period is three times longer than the normal cold storage, the product preservation index is greatly improved, and the shelf life after delivery is also Obviously, the characteristics of decompression and storage are: Rapid cooling The decompression storage can create a lower pressure environment and reduce the conditions for water vaporization. Therefore, the product in the library can reach the predetermined temperature in just 20 minutes. At the beginning, it laid a good foundation for preservation. Rapid oxygen reduction, purification of general industrial decompression library at any time can be reduced to 2.1% oxygen in 10 minutes, the accuracy of low oxygen control is 0.05%, as long as the pressure is constant, the concentration of low oxygen is stable, which is an ordinary storage The preservation method cannot be achieved. Decompression and preservation can eliminate harmful gases at any time and maximize the physical health of the goods. Therefore, the stored foods are not aging, yellow, weightless, and not deteriorating, and the product rate is as high as 98%. Low energy consumption, multi-functional vacuum cooling, rapid cooling, good cooling effect, both refrigeration and freezing dual functions. Efficient sterilization, elimination of residues. In industrialized decompression storage, the use of ozone for sterilization at atmospheric pressure and decompression twice to eliminate pollution residues is considered to be an ideal measure in the world today. Ozone is a broad-spectrum, high-efficiency bactericide. It is harmless to food and does not cause residual pollution. In particular, the use of ozone under decompression can act on microorganisms and systemic pesticide residues that have penetrated into the cortex to achieve complete disinfection. Simple, low cost, and effective. The decompression and preservation technology is promoted and applied as soon as possible in China. Through many years of technological breakthroughs, researchers in China have made tanks self-important to reduce their costs, and the cost has been greatly reduced. Their technological level is at the leading position in the world. For our country as a big country in agriculture, the prospects for the application of decompression and preservation technology in our country are very broad.

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