The drying technique of mushrooms is very important. It plays a key role in the shape, color and aroma of mushrooms. Drying equipment must use the dryer drying capacity to ensure quality, soil drying should be eliminated. When drying, they should be divided into thick and thin parts, separated by wet and dry, and the mushroom handle should be laid flat on the baking screen. The water content should be small, and the thick mushroom should be placed on the bottom layer. The water content should be large, and the thin and small layer should be placed on the top. Fresh mushrooms with large water content can be faced with mushrooms, dried in the sun for 1-2 hours, and then dried in the drying room.

1 initial drying period: the baking temperature can not be too high or too low, should be restrained at 35 °C is appropriate, then, the inlet and exhaust holes should be all open, reopening temperature hole, drying 3-4 hour. Usually the temperature rises by 1-2°C per hour and the temperature gradually rises to about 40°C.

2 constant speed drying period: After drying to 4-5 hours, the temperature should be gradually increased to about 50 °C, about 2 °C per hour, the inlet and exhaust holes open one-third, this stage is usually dried 3-4 hours.

3 Drying period: When drying 8-9 hours, the temperature should gradually rise to 55-60°C. At this time, the inlet and exhaust holes should be opened one-half, and the temperature-recovering hole should be opened one-half. It usually takes 1-2 hours to dry.

4 complete drying period: the last one hour, the temperature should be tempered at 60-65 °C, the entire intake and exhaust vents open, reopen the temperature hole to open, so that the hot air up and down cycle, to ensure that yellow eggs and increase the aroma pleated bacteria.

Pay attention to five points when drying: 1 temperature and cooling should not be too fast, only gradually increase or decrease, or mushroom cover wrinkles affect the quality. 2 The maximum temperature can not exceed 65 °C, otherwise it is easy to scorch. 3 Mushroom surface is white or gray mushroom, you can put the mushroom flat on the mushroom screen, with a clean sprayer evenly spray water on the dried mushroom surface (can not be sprayed on the bacteria pleats), and then into the drying room, open Doors and windows, stuffy for 30 minutes, then normal drying. One time can not be carried out 2-3 times, so that the mushroom surface color is the same. 4 If you do the screening, it must be done quickly after 5 hours. 5 After drying, shiitake mushrooms must be packaged in a timely manner, and the temperature should be kept dark and monotonous.

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