Introduction to microwave edible fungus culture medium sterilizer: Microwave energy is used to conduct sterilization tests on edible fungus bagged culture media to replace the traditional high-pressure moist heat sterilization process. Finding out the effects of changes in microwave power, microwave action time, and distance between the culture medium and the original microwave on its sterilization effect provides a basis for the development and application of microwave technology in the production of edible fungi.

Edible fungi, as a traditional non-staple food, occupy an important position among the three major food sources of human beings. Fungus food is rich in nutrients and has high biological efficiency. With the improvement of living standards and the improvement of edible fungi deep processing technology, its market demand will continue to grow. However, the current yield of edible fungi is low, seriously low, which seriously affects the economic benefits of edible fungi. Regarding the current problems, the main reason is that the sterilization cycle of the original culture medium is too long. Traditional high-pressure steam sterilization needs to be maintained at a temperature of 121°C for more than 2 hours to achieve the sterilization effect. Microwaves were used to conduct sterilization tests on culture media used for edible fungi production. The results showed that good sterilization effects could be achieved in just a short time.

The lethality of bacteria decreases as the distance from the culture medium to the microwave source increases, which is due to the uneven spatial distribution of microwave power density. As the distance to the microwave source increases, the microwave power density becomes smaller and smaller, so the sterilization effect becomes worse and worse as the distance to the microwave source increases.

In other words, the greater the sterilization power of microwave edible fungus culture medium, the shorter the time required to achieve complete sterilization, and the better the sterilization effect. Distance is also a very important factor affecting microwave sterilization. As the distance between the material and the microwave power increases, its power density decreases sharply, and the sterilization effect becomes worse and worse. Polyethylene plastic bags (media packaging bags for the production of edible fungi) are suitable for microwave sterilization and have no impact on the effect of microwave sterilization.