Preliminary harvesting and processing technology of Gastrodia elata

Gastrodia elata, such as fresh sales, as long as it does not collide, do not hit, and no mechanical scars after harvest, then gently brush off the sediment from the flax body with a soft brush and load it into a soft-lined wooden box or plastic box. If the processing of dry hemp, the method is more complex, generally with water boiling or cage steaming method for ripening, and then drying or sun drying. Cage steaming and Kang drying are generally used in actual production, and the operation process is as follows: grade selection-washing-steaming-Kang drying.

1. The grade is graded according to the weight of Gastrodia elata, that is, it is placed and treated at less than 50g, 50m / 99g, 100m / 150g, 151m / 200g and more than 201g respectively, and diseased and rotten flax and other unqualified products are removed at the same time.

2. Wash away the sediment on the surface of the hemp body with clean water.

3. Steaming the washed Gastrodia elata into the cage. The general practice is: after the water is boiled in a large fire, first put in the largest Gastrodia elata, then steam for about 6 minutes, then put in the next large Gastrodia elata to continue steaming, and then put in the smaller Gastrodia elata after 6 minutes, then steam for about 5 Mel for 6 minutes, finally put in the small Gastrodia elata, and then steam for about 5 min. After 6 minutes, it can be all steamed. In the process of steaming, attention should be paid to: every time you put a drawer of raw hemp, lift the original drawer and put the new drawer at the bottom. Check the steaming maturity to be thoroughly ripe and without hard core.

4. Bake the Kang until the surface temperature of the Kang is 50 ℃, arrange the cooked hemp monolayer, turn it every 30 minutes, increase the temperature by 10 ℃ every 60 minutes, and keep the temperature until drying when the highest temperature is 80 ℃. The main points of the Kang drying process: when baking to semi-dry, the hemp body is very soft, and the hemp body is gently pressed with clean and smooth wood, in order to make it flat and straight, with higher transparency, easier to break in use, and easy to measure at the same time, this work can be carried out when the hemp body is turned over in the baking process. In order to improve the commodity value of Gastrodia elata, we can start from three aspects: first, strict classification. Each time cooked and dried, only one specification of Gastrodia elata is used in order to master the heat. Second, after the hemp body is washed, the rough appearance and spots of Gastrodia elata are removed with a leather rolling machine. Third, in the baking process, there will be bubbles under the skin of the hemp body, which can be punctured and deflated with a very fine bamboo needle, and smooth the epidermis.