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2. Drying: Washed American ginseng. Before entering the processing room, the surface moisture should be dried in the sun. And to put different sizes of American ginseng on different drying curtains (pans), often divided into three levels. The primary diameter is greater than 20 mm, the secondary diameter is 10-20 mm, and the tertiary diameter is 10 mm or less.
3, drying: more drying methods used in the drying room. The drying room can be determined according to the conditions, some use glass rooms to dry by the sun; some taxis use heating and drying; some use electric air to dry; others use mantle drying. No matter what kind of drying room, it requires health, fire-fighting equipment, well-illuminated, with a tide hole that can open and close. The more advanced drying room is equipped with a multi-layered shelf for placement of ginseng (pan), and has a relatively complete system for heating and humidity control. The drying temperature requirement is that the initial temperature is 25-26 °C for 2-3 days, then gradually rise to 35-36 °C. After the main body becomes soft, the temperature is increased to 38-40°C, and then gradually reduced to 30-32°C for 2-3 days until it is dried. The entire drying time is about 2 weeks. The humidity requirement for drying is that the initial control relative humidity is about 60%; the medium term is 50%; the late period is less than 40%. American ginseng drying is an important factor that determines the quality of the product and the price level. The technical requirements are high and producers must take it seriously.
4. American Ginseng's commodity grades: The product American ginseng is divided into long, short, and U.S. specifications. The roots are short and thick, and the body length is 2-5 centimeters for the short branch; the root length is greater than 5 centimeters for the long branch; the length of the root body is different, and the thickness is not equal to that of the EC. Long and short branches can also be divided into different specifications according to the size of the root body. No matter what kind of American ginseng products, vertical wrinkles are fine; the cross section is yellowish-white, flat resinous spots can be seen, the formation of layer rings is obvious; the aroma is rich; there is no green branch, no red branch; no disease, no insects, no mildew Better. Source: Rural Information Network
American ginseng processing technology
1. Scrubbing: Scrubbing is the first procedure to participate in the work. Scrubbing methods are high-pressure water washing or brush machine washing and manual brushing. Before washing, the American ginseng should be immersed in water for 10-30 minutes, and then the mud should be brushed off. General washing of American ginseng can not be too heavy, in addition to heavier rust, as long as the soil and the soil at the bifurcation of the legs can be washed off.