First, the raw material finishing: processing varieties are generally selected smooth skin, straight root cylindrical, easy to slice processing. Select carrots that are fresh and clean, moderately mature, suitable for long and rough, and those with worms, lesions, serious injuries or malformations, and maldevelopment, and cut into thin slices measuring 1 cm thick for dehydration. Second, cooking cooling: The cut carrot (10kg, for example) into the steam vapor tight fumigation, each interval is generally controlled in 5-7 minutes, after steaming its soluble solids content of 10.5%. Cooling water temperature is generally between 0°C and 15°C. Immediately after fumigation, enter the water and let it cool down to 15°C. This way, it is easy to maintain the original color of the product and achieve the purpose of cooling. Third, drain drying: After cooling the carrot slices drain 3-5 hours, cut into 3-5 mm thick sheet into the drying room to be baked. Vapors should be drained in the drying room to keep the temperature between 45°C and 60°C. The heating device should preferably use electrical energy. When using the coal stove or charcoal to raise the temperature, the fire source must be isolated from the drying room to keep the air in the room clean. The drying time is 5-6 hours, the final net weight reaches 0.12 kg, and the moisture content is reduced to 10%. After the dried carrot slices were taken out and put into 350 ml of sodium chloride solution, the sulfur dioxide content in the solution was reduced to a minimum, and the carrots were then left to stand for 20 minutes and then dried in a drying room. Until the net weight reaches 1.4 kg, the final product has 8% salt content and 15% moisture content, and the water activity at 0.02°C is 0.45. Fourth, sorting packaging: According to the diameter of the product will be divided into large, medium and small three categories of packaging, packaging environment must be dry and clean, fresh air, the temperature is appropriate. Materials should be non-toxic, non-odor, breathable and moisture resistant, 0.08 mm thick polyethylene film bag. Each 0.5 kg is a bag, and the outer package is made of a carton with a moisture-proof oil layer lined with a layer of clean wax paper or film. Each box has a net weight of 50 kg. The sachets are arranged in layers and neatly arranged. The outside of the box is sealed with tape, marked with marks, stored at a temperature of 12-20° C. and a relative humidity of no more than 60%. The degree of qualification processing and storage quality are qualified before they can enter the market.
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