The harvesting time of star anise varies depending on the purpose. The processed dried fruit should be mined after the end of August, and the quality can be guaranteed after the harvest is completed in the middle and early October. 3-4 catties of fresh fruit can be processed into 1 catties of dried fruit. 5 catties of fresh fruit is only 1 catties of dried fruit, and the quality is poor. In order to ensure the quality of star anise, it should not be picked early. When harvesting, it is required to handle with care, do not damage the peel and sharp corners, it is strictly forbidden to beat with bamboo poles, and be careful not to damage the young fruits on the tree. It is best to use soft sacks and cloth bags for dressing utensils, instead of rough bamboo baskets. Picking should be done in sunny days, which is easy to process. Picking in rainy days is prone to mildew, deterioration and heat.
Star anise drying process
At present, there are several methods for star anise drying:
Method 1: Dry in the sun, directly spread the fresh star anise fruit on the drying field, and dry it in the sun for 4-5 days to make the finished product;
Method 2: kill and dry, put the fresh star anise fruit in 90-100 degrees Celsius water, stir for 4-6 minutes, remove the star anise fruit when the color changes from green to light yellow, spread it on the drying field, and dry it in the sun for 4 Days can be dried into finished products;
Method three: heat pump dryer drying:
- Before using the star anise dryer for star drying, it is necessary to fix the green first, so that the color after drying can meet the requirements. Immediately soak the star anise in nearly boiling water for about 3 minutes. When the star anise turns slightly yellow, pick it up, spread it out into the drying room of the heat pump star anise dryer, and turn on the air energy heat pump star anise dryer for drying. Do.
- Carry out the drying operation, adjust the octagonal heat pump dryer to drying mode, adjust the temperature to 60°C, and dry for 1 hour. Note that dehumidification is not required at this stage, mainly for color control.
- Adjust the drying mode of the octagonal heat pump dryer to drying + dehumidification, adjust the temperature to 55 ℃, and dry for 3 hours. Note that a lot of dehumidification is required at this stage.
- Keep drying + dehumidification mode, adjust the temperature to 50℃, and dry for 3 hours. Note that a lot of dehumidification is required at this stage.
- Continue to maintain the drying + dehumidification mode, adjust the temperature to 45 °C, and dry for 3 hours. Note that there is relatively little moisture at this stage, and it can be slowly dehumidified
- Adjust the mode to drying mode, adjust the temperature to 65°C, and dry for 2 hours. The drying program ends.
Selection of octagonal heat pump dryer
Star anise is mainly harvested in summer and is suitable for tray drying. Therefore, you can choose Xinde open-loop side air outlet equipment or rear air outlet equipment. 7P equipment, the drying room can be built about 25 cubic meters, and can bake about 500 kg of fresh materials at one time; 14P equipment, the drying room can be built about 50 cubic meters, and can bake about 1000 kilograms of fresh materials at one time. The daily output exceeds 10 fresh materials, and the assembly line can be used for drying.
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