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中国药典(1977年版)规定竹沥为鲜竹杆经加热后自然沥出的液体,即先经老百姓就地砍竹烧沥,再由药厂收购、过滤、灌封、灭菌而成。竹杆组织主要分输导组织(维管束)、贮存组织(薄壁细胞)两部分。烧制看到:竹沥是从维管束向外渗流,而薄壁细胞无竹沥渗出。这是由于竹段中间受强火灼烤时,维管束中的液体开冶受热膨
The Chinese Pharmacopoeia (1977 edition) stipulated that bamboo lees were naturally drained liquids from fresh bamboo sticks after heating, that is, they were first chopped and chopped with bamboo by the local people, then purchased, filtered, potted, and sterilized by pharmaceutical companies. The bamboo rod tissue is mainly divided into two parts: the conducting tissue (vascular bundle) and the storage tissue (thick-walled cell). Fired to see: bamboo leach is oozing from the vascular bundle, and the thin-walled cells are not leaking out of bamboo. This is due to the fact that the liquid in the vascular bundle is heated and swelled when the middle of the bamboo section is burned by strong fire.