芒种花挥发油化学成分研究

Study on Chemical Constituents from Essential Oil of Hypericum patulum

目的:对芒种花挥发油进行化学成分的研究,为芒种花的进一步开发和利用提供科学依据。方法:采用水蒸气蒸馏法从芒种花中提取挥发油,用气相色谱-质谱法对化学成分进行分析,以归一化法计算各个化学成分的相对含量。结果:共分离出72个峰,鉴定了其中24个化学成分,占挥发油总量的79.50%。结论:芒种花挥发油中的主要成分为α-蒎烯(18.14%)、2,4 a,5,6,7,8-六氢化-3,5,5,9-四甲基-,(R)-1H-苯并环庚烯(13.64%)、β-石竹烯(9.41%)、长叶烯(6.23%)等。

Objective： To investigate the chemical constituents from the essential oil of Hypericum patulum, and provide the scientific basis for exploitation. Methods ： The essential oil was extracted by steam distillation. The chemical constituents of the essential oil were analyzed by GC-MS. The relative contents of these constituents were calculated using square peaks to normalization. Results ： 72 peaks were separated and 24 constituents were identified, which constituted about 79. 50% of the total essential oil. Conclusion： The main constituents are α-pinene （ 18. 14% ） ,2,4a,5,6,7,8-hexahydro-3,5,5,9-tetramethyl-, （R） -1H-benzocyclohepteue （ 13.64% ）, β-earyophyllene （ 9.41% ） , longifolene （ 6. 23 % ） , etc.