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藻类是一群比较原始的低等植物,植物体构造简单,没有根、茎、叶的分化。它大约出现在下古生代震旦纪(距今520百万年),随着气温的变化,地壳的变迁,由盛到衰,现约有25,800种,我国约有100多种,大多生于海水及淡水中,其中与医药密切的有褐藻和红藻类。藻类的医用价值藻类做为药用,历史悠久,源远流长,早在《神农本草经》就有:“海藻,味苦寒,主瘿瘤气、颈下移、破散结气、痛肿、症瘕、坚气、腹中上下呜、下十二水肿……。”的记载,后来,又出现了昆布、海带等藻类
Algae is a relatively primitive group of lower plants. The structure of the plants is simple and there is no differentiation of roots, stems and leaves. It occurred in the Sinian period of the Lower Paleozoic (520 million years ago). With the change of temperature, the crust changes from prosperity to decline. There are about 25,800 species. There are about 100 species in China. Most of them are born in seawater and In freshwater, brown algae and red algae are closely related to medicine. The medical value of algae algae as a medicinal, has a long history, has a long history, as early as “Shen Nong’s Herbal Classic” has: "seaweed, taste bitter cold, the main tumor gas, neck down, broken scattered gas, pain, swelling , jian qi, upper and lower abdomen in the abdomen, edema in the next twelve ......”, later, there appeared algae such as kelp, kelp, etc.