The correct method for storing shiitake mushrooms with carbon dioxide

Using the carbon dioxide (CO2) low-oxygen insect-killing method, shiitake mushrooms can be stored without being affected by the natural climate, free from insects, mold, and spoilage, ensuring a year-round supply to the market. 1. Make a sealable cover from polyethylene film, with the size determined as needed, generally suitable for holding 5-10 tons. The cover is rectangular, with an inspection opening left at the top. When stacking, untie the bags of packaged shiitake mushrooms and stack them into a rectangle or square. The stack is divided into three layers: the bottom layer is a moisture-proof agent, the middle layer holds the shiitake mushrooms, the top layer is a moisture-absorbing agent, and then the cover is put on and sealed. 2. Remove the air inside the cover and fill it with carbon dioxide gas; generally when the concentration reaches about 60%, keeping it stable for 24 hours can kill all insects. 3. Through the inspection opening, check the storage condition of the shiitake mushrooms at any time, measure the carbon dioxide concentration, and control the concentration as appropriate. 4. After shiitake mushrooms are treated with carbon dioxide for insect killing, sealed packaging will no longer produce insects or spoilage. According to market @#@136@#@ conditions, they can be taken out from the cover in batches for sale.