News

Normal pressure sterilizer
2025/7/1

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Most companies that continuously produce cultivation bags use high pressure sterilization. 

Seasonal Ganoderma lucidum cultivation professionals only use the sterilization process for

3 months a year, so they do not purchase high pressure sterilizers. Instead, they use manual

forklifts to push the sterilization cart loaded with Ganoderma lucidum short-segment cultivation

bags into a simple normal pressure sterilization room built with canvas. Two small boilers supply 

steam at normal pressure (steam volume 0.5 tons/hour). It only takes 3 to 4 hours to quickly rise

to 102°C and maintain it for more than 14 hours. It must be kept warm for 12 hours without

dropping the temperature continuously to sterilize thoroughly.


China's Wuping and Gutian sterilization carts have become standard for normal pressure 

sterilization assistance, improving work efficiency. More importantly, after using the sterilization

 cart, it is easy for steam to flow between cultivation bags, and "big dumplings" become 

"small dumplings", making sterilization easier and more thorough. In the short-segment 

Ganoderma lucidum cultivation bag, there are gaps between the short-segment wood,

 so cold air is trapped in the bag, which expands and is quickly discharged through normal 

pressure sterilization. The temperature in the south is high in winter, so it is feasible to use 

a simple canvas sterilizer; in northern China, the temperature is too low and it is not suitable. 

The use of a sterilization cart in Fujian, China is worth learning from for all growers. What we

 pursue is not to control the number of molds in the sterilizer, but to ensure that live steam 

flows over the surface of all cultivation bags (sticks) at any time, and the purpose is to sterilize

 thoroughly..


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