I. Harvesting Harvested when the fruiting body grows into a fully grown volume. If harvesting is too early, the quality of the mushrooms is poor, and the yield is reduced. When harvesting is too late, fruiting bodies are more susceptible to aging, parachute formation, and discoloration. When harvesting, it is necessary to reduce the mechanical damage and clean and disinfect the collection tools and packaging containers. Second, after the processing of mushroom harvest, cut mushroom handle, if the mushroom yellow or brown, put 0.5% citric acid solution, rinse for 10 minutes, remove and drain water, the mushroom quickly pre-cooled . Pre-cooling is very important. Because at higher temperatures, nutrient consumption, aging, and browning reactions are accelerated. 3. Low-temperature controlled atmosphere storage Pre-cooled mushrooms are packed in storage bags made of 0.025 cm thick polyethylene plastic film. Each storage bag contains 1 kg of fresh mushrooms. After sealing the mouth of the bag, store the mushroom in a cold room again and store the temperature of the mushroom body within 0 to 3°C within 4 to 5 hours, and maintain the relative humidity between 95% and 100%. Mushrooms have a good storage effect when the oxygen concentration is 1% and the carbon dioxide concentration is 10% to 15%, and the mushroom body is white in color and has very few open umbrellas. When the mushroom was put into storage, the temperature was above 10°C and the breathing was vigorous. Therefore, at the same time when the temperature is lowered after storage, the oxygen concentration in the storage bag can be reduced to 3% or less within 4 to 5 hours, and the carbon dioxide concentration can be increased to more than 10%. When the temperature dropped to the temperature at which the mushroom was suitable for storage, the respiration was weakened. After 1 day, the oxygen concentration in the bag reached 1%, and the carbon dioxide concentration was 13%. At this time, a small needle was punched in the bag with a fine needle. Can basically keep the ratio of oxygen and carbon dioxide concentration. In future management, humidification measures should be taken to the cold storage to ensure that the relative humidity in the bag is above 95%.
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