Objective: To study the chemical constituents of the essential oil from the roots and rhizomes of Patrinia rupestris.
Method: The essential oil was extracted by steam distillation. The components were separated and identified by gas chromatography mass spectrometry and elucidated on the standard mass spectral data. Gas chromatography showed their percentages by area normalization method.
Results: Seventeen constituents were identified which make up 74.57% of the oil.
Conclusion: Transcaryophyllene (38.41%) was the main constituent, and other constituents include alpha-gurjunene, caryophyllene oxide, humulene, 9,12-octadecadienoic acid, etc.
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