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有关青黛的加工工艺,1985年版中国药典并未作具体规定。我们结合我县种植菘蓝二百多年历史的实际情况,对青黛的加工工艺介绍如下。一、浸泡选生长旺盛,手抓发脆并有响声的优质头刀或二刀呈灰白色的鲜叶,趁早晨有露水时割取。每50kg 鲜叶洗净拣去杂质后投入备用缸内,加清水350～400kg 浸泡,并用竹帘压盖,使叶片全部浸于水中。浸泡时间与气温有关,25～30℃时,约需20～24小时。浸泡以叶片
The Chinese Pharmacopoeia of the 1985 edition did not specify the processing technology of the barley. Combining with the actual conditions of planting indigo in our county for more than 200 years, we introduced the processing technology of the indigo. First, the soaked selection grows vigorously, and the high-quality head-knife or the two-blade, fresh-grained, sharp-edged, sharp-edged, hand-shorn, fresh leaves are picked up in the morning when there is dew. Every 50kg of fresh leaves are washed, picked and thrown into the spare cylinder, 350-400kg of fresh water is soaked, and covered with bamboo curtains to make the leaves completely immersed in water. The soaking time is related to the temperature, and it takes about 20 to 24 hours at 25 to 30°C. Soaked with leaves