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目的:对甘肃榆中和碌曲的藏药刺柏叶中挥发油化学成分进行比较分析。方法:采用水蒸气蒸馏法提取挥发油,利用GC-MS联用技术对其进行分离分析。结果:甘肃榆中和碌曲的得油率分别为0.21%和1.45%,两个地区刺柏叶中前者挥发油共分离出40个峰,鉴定出38个化合物,占分离物质的95%,后者挥发油共分离出51个峰,鉴定出47个化合物,占分离物质的92%。甘肃榆中刺柏叶中挥发油的主要成分为α-蒎烯(44.92%),1-石竹烯(9.23%)、(-)-异喇叭烯(6.50%)、α-石竹烯(5.60%)、月桂烯(4.54%)、d-杜松烯(3.37%);碌曲刺柏叶中挥发油的主要成分为二-非手性-α-柏木烯(31.87%)、环己烯(15.28%)、γ-榄香烯(10.05%)、澳白檀醇(5.80%)、α-蒎烯(5.79%)。结论:两者刺柏叶挥发油成分有所不同,其得率及主要成分都有较大差异。该方法对建立刺柏质量标准控制有参考价值。
Objective: To compare and analyze the chemical constituents of volatile oil in the leaves of Tibetan Medicine Sabina vulgaris in Yuzhong and Luqu of Gansu Province. Methods: Volatile oil was extracted by steam distillation and separated by GC-MS. Results: The oil recovery rates of Yuzhong and Luqu of Gansu Province were 0.21% and 1.45% respectively. The former 40 volatile oil components were isolated from the volatile oil of the former, and 38 compounds were identified, accounting for 95% of the separated substances. A total of 51 peaks were isolated from the volatile oil, 47 compounds were identified, accounting for 92% of the isolated substances. The main constituents of the volatile oil from the leaves of Gynura przewalskii in Gansu were α-pinene (44.92%), 1-carbene (9.23%), , Myrcene (4.54%) and d-cadinene (3.37%). The main constituents of the volatile oil in the leaves of Celastrus glauca were di-achiral-α-cedrene (31.87%), cyclohexene (15.28% ), Γ-elemene (10.05%), albithanol (5.80%) and α-pinene (5.79%). Conclusion: The compositions of essential oil of Sabina przewalskii differ from each other, and their yields and main components are quite different. The method has the reference value to establish the quality control standard of juniper.