鞣质是一类多元酚及其衍生物,结构极为复杂,广泛地存在于植物生药中,易溶于水,能与蛋白质结合生成沉淀,有收敛性;医药上用作止血药。中医所用的止血药物很多,但根据传统,许多止血药又必须先经过炒炭然后使用。近人也有认为有些生药本身具有止血作用,主张不必炒成炭而使用的。 Tannins are a kind of polyphenols and their derivatives. The structure is extremely complex. It is widely found in plant crude drugs. It is easily soluble in water, and can combine with proteins to form precipitates and has astringency. It is used as a hemostatic agent in medicine. There are many hemostatic drugs used in traditional Chinese medicine, but according to tradition, many hemostatic drugs must first be charcoaled and then used. In recent times, some people think that some crude drugs have their own hemostasis, and they claim that they do not need to be charcoalized.