| 摘要 |
The volatile chemical components of flowers, leaves, stems, and roots of Rabdosia rubescens were extracted by solid-phase microextraction method, and the extracts were analyzed by gas chromatography-mass spectrometry. A total of 40 chemical constituents were identified from the essential oils of the roots, stems, leaves, and flowers of R. rubescens. Among them, 15, 24, 15, and 17 chemical components were identified from the roots, stems, leaves, and flowers of . rubescens respectively. In the roots, camphene (38.29%), calarene (7.25%), o-cymene (5.31%), elsholtzia ketone (4.49%) were identified as the major constituents. In the stems, the main components were benzaldehyde (37.81%), elsholtzia ketone (26.14%), β-caryophyllene (5.03%). The leaves were characterized primarily by elsholtzia ketone (73.85%), β-caryophyllene (5.95%) and benzaldehyde (3.31%). In the flowers, elsholtzia ketone (63.18%), β-caryophyllene (10.68%), bicyclogermacrene (4.90%) and benzaldehyde (4.58%) were identified to be the predominant compounds. These results indicate that the essential oils from different organs of R. rubescens exhibit distinct chemical compositions. The differences were particularly between the aboveground and belowground organs. |
