In recent years, people's attention to food safety and health has been increasing, and food preservation has become an important means in the field of food processing. As a new type of quick-freezing method, the liquid nitrogen quick-freezing technology in the food freezer has gradually attracted the attention of a wide range of food enterprises because of its high efficiency, fastness and safety.
Liquid nitrogen quick-freezing technology refers to the food at a very low temperature, the use of liquid nitrogen ultra-low temperature rapid refrigeration, food rapid freezing, in the shortest time through the maximum crystallization area, in the food tissue to form a uniform distribution of fine crystals, do not break the ring to the cell structure, the core temperature of the food in a short time to -18 °C.
1. The guarantee of food freshness by food freezer
1. Maintain the nutrients of the food: During the quick-freezing process, the moisture in the food quickly condenses into ice, which reduces the chance of contact between the food and oxygen, thereby avoiding the occurrence of oxidation reaction and maintaining the nutrients of the food.
2. Maintain the original color and flavor of the food: During the liquid nitrogen quick-freezing process, the temperature of the food decreases and the protein denatures slowly, which will not destroy the original color and flavor of the food, so as to maintain the original flavor of the food.
3. Suitable for a variety of foods: The food freezer is suitable for quick-freezing and preservation of a variety of foods, such as meat, vegetables, fruits, pasta, etc. This technology can be widely used in food processing, catering industry, laboratory and other fields.
Second, the application examples and challenges of food freezers
In mainland China, liquid nitrogen quick-freezing technology has been widely used, and more and more food processing enterprises and laboratories have begun to try to use Dejieli food quick-freezing machine to keep all kinds of food fresh. For example, some large food processors have begun to flash freeze meat and seafood to ensure the freshness and taste of the food. At the same time, food freezers have also been widely used in laboratories, such as in the field of biopharmaceuticals, liquid nitrogen flash freezing technology can effectively preserve biological samples for subsequent research. However, liquid nitrogen quick-freezing technology also faces some challenges in its implementation. First of all, liquid nitrogen needs to be replenished regularly, and the size and weight of a food freezer may also affect its application in certain scenarios.
Third, the future development of food freezers
Although liquid nitrogen quick-freezing technology has been widely used and recognized, there is still a lot of room for its future development. With the continuous advancement of technology, the efficiency, safety and reliability of Dejieli food freezers may be further improved. In addition, as people pay more and more attention to food health, liquid nitrogen quick-freezing technology may develop more application scenarios. Liquid nitrogen quick-freezing technology will also play a greater role in the food industry in the future and provide better services for food processing enterprises.
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