Polygonatum is also known as: chicken head Polygonatum, yellow chicken vegetable , pen tube vegetable, ginseng, tiger ginger, chicken claw ginseng. It is a Polygonatum genus plant. The rhizome is horizontal, cylindrical, and the nodules are enlarged. The leaves are whorls, sessile. Medicinal plants have the effects of strengthening the spleen, moistening the lungs, and promoting fluid production.
The rhizome of Polygonatum japonica is cylindrical. Due to the expansion of the nodes, the "internodes" are thick at one end and thin at the other end. There are short branches at the thick end, with a diameter of 1-2 cm. Stems 50-90 cm tall, or up to 1 m or more, sometimes climbing. The leaves are in whorls, each with 4-6 leaves, strip-lanceolate, 8-15 cm long, 4-16 mm wide, with the apex curled or bent into a hook shape.
Polygonatum heat pump drying
Harvested in spring and autumn, those picked in autumn have the best quality. Dig the rhizome, remove the above-ground part and fibrous roots, wash away the soil, steam it in a steamer until it becomes oily, then take it out to dry in the sun or oven. Or put it in water and boil it, then take it out and dry it in the sun or oven.
Dig out the rhizome, remove the above-ground part and fibrous roots, wash the soil, steam it in a steamer until it is greasy, take it out and dry it. Or boil it in water, take it out and dry it.
Add the chopped Polygonatum sibiricum to remove impurities, and place it in layers on the grill. The baking temperature should be from low to high, with the maximum temperature not exceeding 75°C. If the starting temperature is too high, the surface of Polygonatum will be burnt. Therefore, gradual temperature adjustment is a key factor in improving the quality of dry products.
Polygonatum heat pump dryer drying room
The temperature in the first stage should be maintained at 45℃-50℃, and the dehumidification should be fully turned on for 3-5 hours.
In the second stage, the temperature is controlled at 50℃-55℃, dehumidification is turned on 1/3-2/3, and maintained for about 6 hours.
The third stage is post-drying, and the temperature is raised to 60℃-70℃ until completely dry.
The final dried Polygonatum sibiricum should not be coked, and the moisture content should be between 12% and 13%.
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