Compared with fresh meat, it needs to be treated in time, and it is difficult to store cold meats. Frozen meats have stronger advantages in handling and storage, and are deeply loved by related food companies. In the process of using frozen meats, first of all, Faced with the problem of thawing, relevant thawing equipment is needed to assist production. In the long-term development practice, people have found that there are many ways to speed up the thaw of frozen meat, and UHP thawing machines are developed based on the use of water, air, electricity and other media. Thawing machine, Ohm heating thawing, low temperature and high humidity air thawing machine and other equipment. Among them, the low temperature and high humidity air thawing machine has been widely used with its unique advantages.
The low-temperature and high-humidity air thawing machine is a device for thawing air as its medium. It is not difficult to know from the experience of daily life that the thawing of meat directly exposed to the air will easily cause the meat surface to be dry, which will degrade the quality. The low-temperature and high-humidity air thawing machine By lowering the temperature and increasing the humidity, the high-humidity air is allowed to thaw frozen products to avoid the surface drying phenomenon. In addition, the low-temperature and high-humidity air thawing machine consists of a cooling fan, a refrigeration condensing unit, an air circulation system, a steam piping system, and temperature. , The humidity control system and other components can provide frozen meat solutions for large and medium-sized meat processing plants.
The low-temperature and high-humidity air thawing machine adopts a low-temperature and high-humidity thawing method, which has a long thawing time. However, it is precisely because of this, it can provide enough reflux time for the internal juice of the meat, so that the internal juice and related nutrients of the meat can be preserved. UHP thawing machine uses high-pressure means to decompress, easily denatures protein and damages the original water retention of meat. Ultrasonic thawing machine and microwave thawing machine can not provide enough reflux time. Therefore, in the meat juice loss rate, low temperature and high humidity The air thawing machine has unparalleled advantages. In addition, the thawing method of the low-temperature and high-humidity air thawing machine is soft and gentle, and there is no big change in meat quality and meat structure. Therefore, the thawed meat has higher quality. Protection.
At present, the low-temperature and high-humidity air thawing equipment on the market uses automatic control methods, which can adjust the thawing time, temperature, and humidity according to the requirements of different frozen products, so as to ensure the thawing effect and the time to reach the best state after the meat is thawed. It will also be automatically refrigerated and kept fresh, and meat deterioration will not occur due to forgetting to take out meat. From the temperature point of view, the low-temperature and high-humidity air thawing equipment has been maintained at a low temperature, making the temperature difference between the food center temperature and the surface temperature small , The thawing effect is more uniform and at the same time avoiding the mass reproduction of microorganisms causing the meat to deteriorate.
Of course, at present, there is still a certain gap between China's low-temperature and high-humidity air thawing machines and foreign products. This gap is mainly reflected in the accurate control of meat sap loss rate. For this reason, some food companies have introduced high-temperature and low-temperature thawing from high prices abroad. The system, through the precise control of the meat churn loss rate, ensures that the thawing of the meat will not affect the taste of the final food product. From this point of view, China's low-temperature and high-humidity air thawing machine manufacturers need to increase the R&D and upgrade of the equipment. So as to improve the precise control of meat loss rate.
The author's summary: Frozen meat is favored by China's meat food enterprises at a relatively low price. During the production of frozen meat as a raw material, it is difficult to avoid confronting the problem of thawing frozen meat. In the long-term practice process, the development of our country A variety of thawing methods are available for thawing equipment. Among these, the low temperature and high humidity air thawing machines have unique advantages in terms of cost of use, thawing of meat quality, etc., and are favored by most food companies. However, the production of low temperature and high humidity air thawing machines Enterprises can not stop there, but also need to start from the market demand, explore the gap between China's equipment and social needs, increase research and development efforts to achieve the upgrade of low temperature and high humidity air thawing machine.