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用色谱－质谱联用技术对湖北产土荆芥挥发油的化学成分进行了分析。鉴定了８０种组分。其中主要组分是：薄荷醇（３１．３３１％）、α－松油烯（１３．２１０％）、香芹艹孟烯醇（８．５２６％）、对伞花烃（８．３４３％）、１，８－桉叶油素（７．４１７％）等５种化合物。被鉴定的８０种成分，共占挥发油总含量的９９．１１２％。
The chemical constituents of the volatile oil of Schizonepeta in Hubei Province were analyzed by GC-MS. 80 components were identified. The main components are: menthol (31.331%), alpha-terpinene (13.210%), parsley melenaenol (8.526%), cymene (8.343%) 1, 5 - eucalyptol (7.417%) and other five compounds. The 80 components identified accounted for 99.112% of the total volatile oil content.