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(一) 當歸係繖形科(Umebellifrae)植物,學名Angelica Sinensis(oliv.)Diels=Andelica polymorpha Maxium, var, Sinensis oliv.)產於我國西北岷山山區一帶,是我國應用最廣的婦科要藥。當歸根的成分,含有0.2%的揮發油,其比重在15℃,為0.955。該揮發油初呈透明之褐黄色,經短時日後變為褐色,含遊離酸佔40%,非酸性物質佔60%。挥发油的主要成分为丁基苯二甲酸酯(n-Butyliden-
(1) The Umbeellifrae plant of the family Angelica Sinensis (oliv.) Diels=Andelica polymorpha Maxium, var, Sinensis oliv. is produced in the mountain area of the Northwest Songshan Mountains in China and is the most widely used gynecological medicine in China. . The Angelica root composition contains 0.2% volatile oil, and its specific gravity is 0.955 at 15°C. The volatile oil was initially transparent and brownish yellow, which turned brown after a short time, containing 40% free acid and 60% non-acidic material. The main component of volatile oil is butyl phthalate (n-Butyliden-