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[Objective] This paper was to study the chemical components of volatile oil from Polygala tenuifolia Willd. which could provide a reference for evaluating its medicinal value. [Method] The volatile oil from P. tenuifolia was extracted by simultaneous distillation and extraction(SED), then its chemical compositions were analyzed by GC-MS. [Result] The results showed that 16 compounds were separated from the volatile oil of P. tenuifolia, and 14 compounds of the formula, molecular weight, and relative content were identified. [Conclusion] Oleic acid is the major chemical constituents in the volatile oil, which accounts for 52.81%, the next are the palmitic acid and steraic acid, which account for 28.26% and 12.78% respectively.
[Objective] This paper was to study the chemical components of volatile oil from Polygala tenuifolia Willd. Which could provide a reference for evaluating its medicinal value. [Method] The volatile oil from P. tenuifolia was extracted by simultaneous distillation and extraction (SED) , then its chemical compositions were analyzed by GC-MS. [Result] The results showed that 16 compounds were separated from the volatile oil of P. tenuifolia, and 14 compounds of the formula, molecular weight, and relative content were identified. [Conclusion ] Oleic acid is the major chemical constituents in the volatile oil, which accounts for 52.81%, the next are the palmitic acid and steraic acid, which accounts for 28.26% and 12.78% respectively.