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。
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。
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。
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。
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。
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。
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。
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。
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。
The chemical compositions of the volatile oils obtained from two traditional Chinese medicines, rhizomes of Curcuma aromatica and C.
应用气相色谱-质谱联用技术对姜黄属中草药郁金和姜黄中挥发油的化学成分进行了测定。
Methods The chemical constituents in volatile oils from the husk of sorghum vulgare pers were analyzed By GC-MS-computer technology.
方法采用气相色谱-质谱-计算机联用技术，分析高粱壳中的挥发性成分。
ObjectiveTo understand the questions and solutions in extraction volatile oils from the traditional Chinese medicine by vapour distillation.
目的了解水蒸气蒸馏法提取中药挥发油存在的问题及解决方法。
Conclusion: the optimal process conditions are easy for operation, and high in utilization ratio of volatile oils and the yield of inclusion compound.
结论：实验得出的最佳包合工艺操作简便，挥发油利用率和包合率较高。
African Jasmine: The volatile oils produced significant bactericidal effect. Enable people to relax, is conducive to sleep, but also improve efficiency.
非洲茉莉：产生的挥发性油类具有显著的杀菌作用。可使人放松、有利于睡眠，还能提高工作效率。
The contents of volatile oils were determined in Artemisia Capillaris Thunb. and Artenisia Sacrorum L. and GC MS was used to study the chemical constituents.
对茵陈蒿、白莲蒿分别进行了挥发油含量测定，并采用GC -MS联用仪器进行了化学成分研究。
As a result, there is a need to initiate research on the effect of Artemisia's volatile oils on dermal acne and bacteria as well as its anti-febrile properties.
因此，开展青蒿挥发油对常见病-痤疮致病菌的影响，以及青蒿挥发油退热作用的研究是一项有益的尝试。
The volatile oils of Zhulan scented teas and their dhools were extracted with simultaneous steam distillation extract(SDE) as well as analyzed and identified by GC-MS.
采用SDE提取精油，用气-质联用技术，分析了重庆产特级和一级珠兰花茶及其素坯的挥发油化学组成。
METHODS The volatile oils were extracted with steam distillation. The components were separated and identified by GC MS and elucidated on the standard mass spectral data.
方法以水蒸汽蒸馏法提取挥发油，分别得到不同样品的挥发油，以气相色谱质谱联用（GC MS）联用技术对其化学成分进行分离和鉴定。
Objective: To compare the chemical constituents of volatile oils from Folium Rhododendri Daurici between supercritical CO2 extraction (SCE-CO2) and steam distillation (SD).
目的：对超临界CO2萃取法和水蒸气蒸馏法提取的满山红挥发油化学成分进行比较研究。
Objective To study the influence of diaphoretic process on volatile oils of Magnolia officinalis from Daoxian in Hunan and provide reference for its quality control system.
目的研究发汗对湖南道县产厚朴中挥发油的影响，为湖南道县厚朴质量评价体系提供参考。
Some of the culinary herb tea mixtures sold in the US are flavor enhanced with volatile oils or other aromatic ingredients that make a tastier drink but don't add healing benefit.
一些在美国出售的香草茶是添加了挥发油或其他芳香成分混合的，能使饮料可口，但并没有其他有益成分。
Method With the volatile oils extracting ratio of Nutmeg as optimization targets, the extraction factors affected the volatile oils extracting ratio were optimized by uniform design.
方法采用均匀设计法，以肉豆蔻挥发油的提取率为指标，对影响挥发油提取率的因素进行优化。
The main components of Zanthoxylum are volatile oils, alkaloids, amides, etc. The contents and constituents of these materials from different species or habitats are greatly different.
花椒中富含挥发油、植物碱、酰胺类物质等，因品种、产地的不同这些物质组分和含量有较大区别。
Volatile oils, which give certain herbs their distinctive aroma, are not particularly soluble in water, but many plants containing them can be made into effective teas when properly prepared.
挥发油，这让某些中草药其独特的香气，都没有特别易溶于水，但许多含有这些挥发油成分的植物当经过一定的准备之后就能够制成有效的药茶。
The results show that terpene compounds in the volatile oils were identified. The higher chemical components in the volatile oil are camphene, pinene, phellandrene, zingiberene and borneol.
结果表明：生姜挥发油的主要化学成分是萜类化合物茨烯蒎烯水芹烯姜烯和冰片等。
With gas chromatography-mass spectrometry (GC-MS), the volatile oils in Fructus Amoral Rotundus, Alpinia Katsamdai and Alpinia Officinarum were separated and their main components were determined.
以气相—质谱法分离、鉴定了白豆蔻、草豆蔻、高莨姜挥发油的组成以及各自在油中的相对含量。
The relative contents of all those compounds identified in the essential oils were determined by peak area normalization method. And the major constituents of the volatile oil are 92.66%.
用面积归一化法测定挥发油中各种成分的相对质量分数，占总峰面积的92.66%。
The relative contents of all those compounds identified in the essential oils were determined by peak area normalization method. And the major constituents of the volatile oil are 92.66%.
用面积归一化法测定挥发油中各种成分的相对质量分数，占总峰面积的92.66%。
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