Abstract:

The leaves of Ligularia fischeri Turcz. and L. fischeri Turcz.f.diabolica Kitam, belonging to the Ligularia family, were used as plant materials to obtain 2 volatile oils by steam distillation method. The chemical composition of both oils was analyzed by GC-MS and the area normalization method was used for compound quantification. Results showed that 11 chromatographic peaks separated well were found in the respective GC total ion current chromatograms of both oils. Added together, 13 compounds were identified for the first time in both oils. Nine compounds accounting for 72.72% of the total volatile oil from Ligularia fischeri Turcz. leaves were identified, in which, α-farnesene, caryophyllene, A-farnesene and 3,7- dimethyl-6-octen-1-ol formate were the predominant compounds and the total content of the former 3, sesquiterenes, was 60.23%. Seven compounds were identified and accounted for 67.52% of the total volatile oil from Ligularia fischeri Turcz.f. diabolica Kitam leaves, in which, 3,7,11-trimethyl-2,6,10-dodecatrien-1-ol, phytol, caryophyllene and caryophyllene oxide were the predominant compounds and the latter 2, also belonging to the sesquiterene family exhibited a total content of 20.07%.

Key words: L. fischeri Turcz., L. fischeri Turcz.f.diabolica Kitam, volatile oils, gas chromatography-mass spectrometry