What is the principle of controlled atmosphere cold storage?

　　Controlled atmosphere cold storage is a storage device used in the food industry. It extends the shelf life of food by adjusting the gas composition in the storage environment. The following will introduce the principle of controlled atmosphere cold storage and its application in food preservation.

　　Principle of controlled atmosphere cold storage: Controlled atmosphere cold storage uses specific gas composition and control technology to optimize the storage environment and delay the metabolism process of food, thereby achieving the preservation effect. Its principle mainly includes the following aspects:

　　Oxygen concentration control: Oxygen is one of the main factors causing food corruption and deterioration. Controlled atmosphere cold storage controls oxygen concentration, reduces the oxygen content in food, slows down the oxidation reaction of food, and extends the shelf life. Under normal circumstances, controlling the oxygen concentration between 1% and 5% can effectively inhibit the growth of microorganisms and food spoilage.

　　Carbon dioxide concentration control: Carbon dioxide can inhibit the growth of microorganisms and fungi in food and delay the corruption of food. Controlled atmosphere cold storage can increase the acidity in food by increasing the concentration of carbon dioxide, inhibiting the reproduction and metabolism of microorganisms. Normally, controlling the concentration of carbon dioxide between 1% and 10% can effectively maintain the quality and taste of food.

　　Temperature and humidity control: The temperature and humidity of the storage environment also need to be controlled in the controlled atmosphere cold storage. Appropriate temperature can slow down the metabolism of food, while appropriate humidity can prevent dehydration and quality loss of food. Different types of food have different requirements for temperature and humidity, so they need to be adjusted and controlled according to the specific situation.

　　Application of controlled atmosphere cold storage in food preservation: Controlled atmosphere cold storage is widely used in the preservation and storage of various types of food, such as fruits and vegetables, meat, seafood, dairy products, etc. Its application mainly includes the following aspects:

　　Inhibit microbial growth: By controlling the concentration of oxygen and carbon dioxide, the controlled atmosphere cold storage can inhibit the growth of microorganisms and fungi, and delay the corruption and deterioration of food.

　　Maintain food quality: Appropriate temperature and humidity control can slow down the metabolism of food, extend the shelf life, and maintain the quality, taste and nutritional value of food.

　　Reduce food loss: The application of controlled atmosphere cold storage can reduce the dehydration and quality loss of food, and improve the market value and sales period of food.

　　Summary: Controlled atmosphere cold storage achieves the effect of preservation by controlling gas composition and environmental parameters to slow down the metabolism of food. Its principles include controlling the concentration of oxygen and carbon dioxide, as well as adjusting temperature and humidity. Controlled atmosphere cold storage is widely used in the food industry. It can inhibit the growth of microorganisms, maintain food quality and reduce food losses, providing an effective solution for food preservation and storage. If you have the need to build such a cold storage in the near future, HAOCOOL professionally provides a complete set of cold storage engineering design, equipment, installation, and after-sales integrated solutions, and provides cold storage construction services for large food, pharmaceutical, cold chain logistics, chemical and other companies.