The basic principle of the application of microwave technology in sterilization is not only the thermal effect of microwave, but also the non thermal effect of microwave. Many microorganisms can be killed instantly through the thermal effect of microwave, and the biological structure of some bacteria can even be completely destroyed. Secondly, microwave also has a certain non thermal effect, that is, in the microwave environment, the spatial structure of bacteria and protein and other components may be damaged, which will inevitably lead to a greater impact on the physical and biological activities of microwave, and for some bacteria, microwave will directly cause bacterial death.
At present, microwave sterilization has been widely used in food industry. Compared with traditional heating sterilization, microwave sterilization has greater advantages. First, traditional heating sterilization can only raise the temperature to about 100 ℃, while microwave heating can achieve higher problems. Therefore, compared with traditional sterilization, microwave heating has a more extensive application in terms of sterilization thoroughness.
Microwave sterilization advantage
1. Short time and fast speed
Microwave makes use of its selective transmission function to make the inside and outside of the food even, quickly heats up and kills bacteria. The processing time is greatly shortened. Under the condition of high power density, the satisfactory effect can be achieved even in a few seconds or tens of seconds.
2. Low temperature sterilization can ensure food quality
Compared with conventional thermal sterilization, microwave sterilization can obtain better effect of pest control and sterilization at lower temperature and in a shorter time, and it is free of foreign pollution, so it can retain more effective ingredients and maintain the original color, fragrance and taste.
3. Complete sterilization
The penetrability of microwave makes the surface and interior heated at the same time, and the thermal effect and non thermal effect work together, so the sterilization effect is good.
4. High efficiency, energy saving and convenient operation
