1. Drying application of edible fungus/powder products
1. Drying in the room
The shiitake mushrooms are put on the grill and sent to the drying room for baking. Place the large and thick ones with high moisture content on the upper layer, and the small and thin ones with low moisture content on the lower layer. Generally placed 8 to 10 floors. If it is placed too much, the heating temperature of the upper, middle and lower materials is likely to be uneven. The spacing between each layer should be 30 cm.
2. Temperature control
When the temperature of the drying room rises to 35°C, the mushrooms can be dried in the room. When drying, it must be low temperature first, and then gradually increase the temperature. The temperature is usually increased by 1-3°C in one hour, and the maximum temperature should be controlled at 80-85°C. Generally, it is required to bake at 35-40℃ for 6 hours, at 40-60℃ for 8-10 hours, and at 60℃ for 2 hours. The higher the moisture content of shiitake mushrooms, the longer it takes to bake at low temperatures. If the temperature rises suddenly at the beginning of baking, it will cause the tissues to lose water too fast, which will cause the mushroom caps to be deformed and not round, the gills are inverted, the cap is cracked, the color turns black, and the enzyme activity is destroyed. Lose the original fragrance. After the shiitake mushrooms are sent into the drying room, they should be roasted continuously until they are dry. The heating should not be interrupted, and the temperature should not fluctuate. Otherwise, the color of the mushrooms will turn black and the quality will decrease.
3. Humidity control
In the drying process of shiitake mushrooms, in addition to strictly controlling the heating temperature, timely dehumidification is also an important part. The basic principle of dehumidification 2 In the early stage of mushroom baking, when the temperature of the drying room is 35-40℃, the humidity should be discharged at full load; when the temperature rises to 40-60℃, the humidity can be discharged intermittently. After 60°C, it is not necessary to dehumidify. Excessive dehumidification can easily make the mushrooms pale in color. If the dried shiitake mushrooms have a water-soaked yellow color, it means that the moisture removal is not good, or the temperature is not enough, especially if the heat is stopped in the middle, it is more likely to cause this phenomenon.
4. Quality inspection
When baking for 16-18 hours, you can open the drying room door to check whether the dryness of the mushrooms is qualified. When checking, press the junction of the cap and the stalk with finger pressure. If there are only traces, it means that the drying is qualified. If the hand feels soft and the gills are also soft, you need to continue drying. The characteristics of qualified dried products are: the special fragrance of shiitake mushrooms; the gills are yellow, the gills are upright, complete, and not inverted; the water content of the mushroom body No more than = 13% The shiitake mushrooms keep the original shape, the cap is round and flat, and the natural color is maintained.
Second, the advantages of the Nystar drying and dehumidifier drying solution
(1) The fully automatic control system can select the best drying temperature and humidity according to the process requirements of different products, which completely solves the problems of long drying time, high temperature, and high energy consumption in other drying methods. It is unparalleled Table more features.
(2) The use of high-efficiency centrifugal fans has the characteristics of strong wind, uniform air flow, low noise, etc., and the materials are dried evenly and quickly.
(3) During the drying process, the material will not be deformed, cracked, discolored, degraded, not oxidized, thoroughly dried, rehydrated well after drying, less nutrient loss, long storage period, and more effectively protect the color and fragrance of the dried material , Flavor, shape and active ingredients.
(4) The integrated design of the unit can be used when the pipeline and power supply are connected on site; the operation is convenient. After setting the parameters, the automatic control can be realized with high reliability.
(5) Low investment and quick results. Old kilns, garages, etc. can be used for transformation, and it can be moved and save floor space. It is simple and convenient.
The brand NAISIDA of Guangdong Aoyu Electrical Appliance Co., Ltd. mainly develops and sells "household dehumidifiers, commercial dehumidifiers, industrial dehumidifiers, fresh air purifying dehumidifiers, cooling dehumidifiers, temperature regulating dehumidifiers," with constant temperature and humidity products. Constant temperature and humidity machine, rotary dehumidifier, ultrasonic humidifier, wet film humidifier and non-standard product development".
