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前胡为伞形科植物白花前胡(Peucedanum praeruptorum)及紫花前胡(P.decursivum)的根,有散风、止咳、活血等功能,其主要成分含多种香豆素类化合物。由根中曾分离出白花前胡酯甲、乙、丙、丁,紫花前胡甙和甙元,紫花前胡素、4′—氧异戊烯酰紫花前胡素、3′—异戊酰—4′—0—当归酰3′、4′—二氧花椒树皮素、伞形花内酯等。对于香豆素及其衍生物的测定可用极谱法,而对生药前胡中总香豆素的测定未见报道。根据前胡中所含香豆素的共有特点,用极谱法测定总香豆素的含量,以所得
The former is the root of the Umbelliferae plants Peucedanum praeruptorum and P. decursivum. It has functions of dispersing wind, relieving cough and promoting blood circulation. Its main components contain various coumarin compounds. From the roots, it has been isolated from Bletilla platyphyllum A, B, C, D, P. purpurea and Atractylodes purpurea, S. purpurea, 4′-oxy-prenyl methacrylate, 3′-isovalerate. -4’-0 - Angelica 3’, 4’-dioxotonic bark, umbelliferone and so on. Polarography can be used for the determination of coumarin and its derivatives, but no determination of total coumarin in raw herbs has been reported. According to the common characteristics of coumarin contained in Qianhu, the total coumarin content was determined by polarography.