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1·Methods The volatile oils compositions was detected with GC-MS.

方法采用GC - MS对挥发油进行成分分析。

2·The volatile oils were extracted with supercritical CO_2 and stream distillation.

采取超临界CO_2萃取和水蒸气蒸馏两种方法提取白苏叶挥发油。

3·Methods: GC-MS machine was used to analyze the chemical composition in volatile oils.

方法：利用GC-MS气质联用仪对香附炮制前后的挥发油进行成分分析。

4·The volatile oils of Zanthoxylum schinifolium were extracted by water vapor distillation.

采用水蒸气蒸馏法提取精制香椒子中的挥发油。

5·Method: The volatile oils were obtained with supercritical CO2, microwave and stream distillation.

方法：采取超临界CO2萃取、微波萃取和水蒸汽蒸馏三种方法提取佩兰挥发油。

6·Methods: The chemical constituents of volatile oils obtained by two methods were analyzed by GC-MS.

方法：采用GC - MS法对两种方法提取的满山红挥发油进行成分分析。

7·The results showed that the major components were sesquiterpenoid and terpenol of the volatile oils.

结果表明：轮叶蒲桃叶片挥发油主要为萜烯与萜烯醇类化合物。

8·The volatile oils of walnut diaphragm were obtained by hydrodistilation and analysed by GC and GC/MS.

本实验采用水蒸汽蒸馏法提取鲜姜和干姜中的精油，并利用GC-MS分析精油的成分。

9·Methods: The volatile oils were extracted by using steam distillation. The components were identified and separated with GC-MS.

方法：采用水蒸气蒸馏法提取白花前胡饮片的挥发油，用GC - MS法对其化学成分进行鉴定。

10·Conclusion: the volatile oils from Lindera reflexa Hemsl's roots, stems and leaves Contained abundant medicinal active ingredients.

结论：山橿根、茎、叶挥发油含有丰富的药用活性成分。