挥发油

Objective To investigate the effect of elute and extraction solvents on the determination of inclusion efficiency of β-cyclodextrin complex.

目的 研究不同的洗脱和提取溶剂对中药挥发油β-环糊精包合率测定的影响，建立准确的包合率测定方法。

Taking the rates of ethanal and ether extracts,as well as essential oil as indexes,qualtities of Bunge pricklyash from 10 major production areas were evaluated by comprehensive multi-index comparison method.

以醇溶抽提物、不挥发性乙醚抽提物和挥发油含量为指标，应用多指标综合排序方法对全国10个主产地花椒品质优劣进行排序；应用因子分析方法，对影响花椒品质的环境因子进行分析。

Taking the rates of ethanal and ether extracts ,as well as essential oil as indexes,qualtities of Bunge pricklyash from 10 major production areas were evaluated by comprehensive multiindex comparison method.

以醇溶抽提物、不挥发性乙醚抽提物和挥发油含量为指标，应用多指标综合排序方法对全国10个主产地花椒品质优劣进行排序；应用因子分析方法，对影响花椒品质的环境因子进行分析。

ConclusionThe method is reliable, stable and repeatable and can be used for the analysis of the volatile constitiuents of Evodia lepta leaves.

结论此方法稳定可靠，重现性好，可用于三叉苦叶挥发性成分的分析。三叉苦叶；挥发油；气相色谱-质谱联用

The chemical components of the essential oil from Foeniculum vulgare Mill ; were analysed by GC-MS and.

本文用GC/MS分析技术，检出小茴香挥发油 2 2种化学成分，占色谱总馏出面积的 98%，进一步阐明了小茴香的组成成

METHODS: Galanga Resurrectionlily Rhizome volatile oil was extracted by wet distillation method and determined by GC-MS , and the relative content of different constituents was determined by chromatographic peak area normalization method.

采用水蒸气蒸馏法提取山柰挥发油，用气相色谱-质谱联用技术进行测定，并用色谱峰面积归一法确定各化学成分的相对含量。

ObjectiveTo study the chemical constituents of essential oils of Gentiana veitchiorum Hemsl.

目的研究蓝玉簪龙胆挥发油的化学成分。

And Essential oil, Tridecanoic acid 59.08%, 9 ,12-Octa-decadienoic aicd-4.43%, Oleic acid 4.04%, Heneicosane 3.18% with a high level and etc. Clinical application of medical and natural resources development to provide a scientific reference.

木槿花挥发油的主要化学成分中，Tridecanoic acid (59.08%)、9，12-Octadecadienoic aicd-(4.43%)、Oleic acid(4.04%)、Heneicosane(3.18%)等的含量较高，为医学临床应用和自然资源的开发提供了科学参考。

ObjectiveTo study the extraction technology and effective factors of volatile oil from Heracleum hemsleyanum diels.

目的研究了牛尾独活挥发油的提取工艺和主要影响因素。

ObjectiveTo study processing conditions of supercritical CO2 extraction volatile oils from Heracleum hemsleyanum Diels.

目的研究超临界CO2萃取牛尾独活挥发油的工艺条件。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。