How to process and grade Gastrodia elata

Gastrodia elata was dormant from early November to early April of the following year. During this period, Gastrodia elata can be processed and finished drugs can be sold. It is generally used to harvest while planting while processing, so that the harvest and planting are closely linked. The harvest period is divided into winter and spring. Winter harvest before freezing, spring harvest before sprouting after thawing (mid-April). If you want to process the harvested Gastrodia elata, you must follow the following procedures:

Classification: Arrow Gastrodia elata has a size, the first grade Gastrodia elata should be more than 150 grams; the second grade Gastrodia elata 70 ~ 150 grams; the third grade Gastrodia elata less than 70 grams; the fourth grade Gastrodia elata is incomplete insect-eaten.

Rinse: rinse the graded Gastrodia elata in water, peel and cook immediately, called Gastrodia elata or Gastrodia elata. If you take skin, you can cook it directly after washing. It should be noted that Gastrodia elata should not be soaked in water for a long time, otherwise the finished product will be black.

Cooking: after Gastrodia elata is caged or boiled in water, you should pay attention to the following points: A. do not cook too much. The boiling time of the first grade hemp should be 10 ~ 14 minutes, the second grade should be 7 ~ 10 minutes, and the third grade should be 5 ~ 8 minutes. B. Check the cooking condition at any time.

The center of Gastrodia elata has an impenetrable white heart, which should account for 1 of the diameter of Gastrodia elata. The drying rate is high in this way. Otherwise, the cooking is too low and the drying rate is low. C. Boil 10 kg of Gastrodia elata with water and add 20 g of alum. The translucent quality of processed Gastrodia elata is high.

Sulfur fumigation: the purpose of sulfur fumigation of Gastrodia elata after cooking is for beautiful appearance, white and transparent color, good quality and moth-proof. Put the Gastrodia elata on the bamboo curtain on the bed, cover it with plastic sheeting, light the sulfur under the bed, smoke it for 5 to 6 hours, and then dry it on the Kang.

Drying or drying: if the amount of Gastrodia elata is large, it is best to build a dragon Kang, put bamboo curtain, put Gastrodia elata on the bamboo curtain, the temperature should be kept at 55 ℃ ~ 65 ℃ at the beginning, after 30 hours, the temperature can reach 80 ℃, not more than 85 ℃. It usually takes 60 hours to dry. It can also be piled out of the Kang after 48 hours at the temperature of 55 ℃ ~ 65 ℃, covered with gunny bags and sweated for 8 hours, then flattened and reshaped with a plank, and then continued to dry on the Kang. The purpose of plastic surgery is to look good without wrinkles.

Storage: processed Gastrodia elata is stored in plastic bags and will not mildew as long as it is not exposed to moisture. You can be exposed to the sun in the summer. During storage, you can wrap some pepper in a newspaper and put it in a bag to prevent moth.

Grade: first-grade dry goods are yellow and white, solid translucent, no hollow, no dry Kang moth, less than 26 per kilogram.

Second-class dry goods surface yellow-white, solid body is not easy to break, translucent, no hollow, no moth, no mildew, more than 26 per kilogram.

Third-grade practical information: surface yellow-white or brown, translucent, no mildew, no moth, flat and bent, less than 90 per kilogram.