Nowadays, there are quite a lot of thawing equipment on the market. For the moment, according to the thawing method, it can be divided into microwave thawing equipment which uses electromagnetic wave thawing; hydrolyzed tunnel type normal temperature hydrolysis chiller, high pressure bubble thawing machine, etc.; Low-temperature and high-humidity vacuum defrosting machine, vacuum thawing machine, etc.; high-voltage electrostatic frozen meat thawing machine that uses electricity to thaw, nitrogen high-voltage electrostatic frequency conversion thawing equipment, etc. Among them, microwave thawing equipment has been widely used for its unique advantages. .
Microwave thawing equipment uses polar molecular vibration to generate elastic collision with surrounding molecules, friction heat generation, and its temperature rise is generated from the inside of food raw materials. Using this method to warm and thaw food has low production cost, high efficiency, and no bacterial growth of products. The advantages of a small footprint, we will talk about it in detail below.
We know that microwave thawing equipment is thawed by the use of polar molecules. There are many polar molecules in the frozen product, such as ice, protein, glycogen, etc. They have a great absorption capacity for microwaves, so the thawing speed is very fast. According to statistics, a piece of meat in 25 kg can be completed in 2 minutes from -15 degrees to -4 degrees. Compared with the thawing method of "hour" counting, such as hydrolysis freezing and air thawing, the microwave thawing equipment will The thawing time is reduced to "minutes".
The temperature rise rate of the microwave thawing equipment when thawing the material is controlled by the microwave output power, so the frequency is the key to adjust the thawing speed of the equipment. In practice, it has been found that 915MHZ has a longer wavelength than 2450MHZ and is more penetrating, which is more suitable for processing the thawing of large pieces of food materials. The 915MHZ microwave can effectively penetrate the inside of the material up to a dozen centimeters, and can also be packaged to thaw frozen products of 25kg, 50kg and other specifications.
The microwave thawing equipment can achieve thawing without freezing, and retains high nutrients. This is due to the difference in dielectric constant between ice and water, which causes the two to absorb microwaves in different ways. Because water has a stronger ability to absorb microwaves than ice, to achieve thawing without freezing, and to retain more juice, it is necessary to control the whole process of microwave thawing below 0 °C. The ice crystal inside the material melts first because the freezing point is low, but the solidified layer on the surface has not melted to form a protective layer.
Today, microwave thawing equipment is used in many food companies. Like a well-known halogen brand in the intelligent transformation of the workshop, the traditional stream hydrolysis process of the ice shop is upgraded to the microwave ice thawing process, which not only improves the efficiency, but also makes the quality more stable and controllable, with less nutrient loss; In the production process, the frozen noodle robot needs to first thaw the frozen food and then heat it. Usually, the microwave thawing equipment is used.
Microwave technology has developed into a microwave oven and other products as technology continues to develop into people's daily lives. In the food industry, microwaves are also playing a huge role, and microwave thawing equipment is one of them. Looking forward to the future, people will have a deeper understanding of microwaves and promote more and better microwave equipment.
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