挥发油

Methods The GC-MS and GC were used to analyze the essential components of thirteen batches of Amomum villosum samples. The digitized standard of characteristic fingerprint of Amomum villosum essential oil was compared with the result of the samples detected by GC-MS and GC.

分别采用GC-MS和GC分析13批次阳春砂仁的主要成分，同时用已建立的阳春砂仁挥发油特征指纹图谱数字化信息与GC-MS、GC分析的样品进行相似度比对。

Ingredients: the fruit containing protein 1.2%, fat 1.09%, carbohydrate 12%, calcium 0.204%, phosphorus 0.046%, iron 0.014% and astringent acid 0.02%; the seed containing volatile oils 7-8%, Amyrin and so on.

成份：果实含蛋白质1.2%，脂肪1.09%，碳水化合物12%，钙0.204%，磷0.046%，铁0.014%，抗坏血酸0.02%，种子含挥发油7-8%，以及香树脂醇等。

The steam distillation. 2.Rotary evaporation distillation, 3.supercritical extraction for the extraction of volatile oil oriental arborvitae, the experiment results showed, 1.the best conditions for the extraction by rotary evaporation are NG:water:ethanol=l:4:4 sawdust under the conditions 50 ° C in temperature, atmospheric pressure 0.1 Pa, extract maximum extraction rate of 90 minutes.

对不同方法提取得到的侧柏挥发性物质的粗提物进行了的触角电位测定和行为测定，确定了利用水蒸气蒸馏、旋转蒸发蒸馏、超临界萃取三种方法进行侧柏挥发油的提取，并通过试验得到旋转蒸发仪萃取的最佳方法为：在木屑：水：乙醇=1：4：4；50℃温度；0.1个大气压的条件下，提取90min的提取率最高。

Volatile oil and β-asaron are efficiency parts ofAcorus tatarinowii Scho...

提取石菖蒲挥发油、β-细辛醚、乙醚层、乙酸乙酯层、正丁醇层、水层六个部位。

Results: Fifty-two constituents were isolated from Acorns tatarinowii schott in essential oils and thirty-mine compounds were determined, the content of β-asarone is 83.75%.

结果：从石菖蒲挥发油中共分离出52种成分，鉴定了39种化合物，其中β-细辛醚的含量占了83.75%。

All the main functions of Acrous Gramineas on learning and memory are located in its total volativeoil, of which α-asarone forms its most effective constuent, while the functions of its extracts are relatively weak.

以上实验结果还表明：石菖蒲对学习记忆作用的主要有效部位是总挥发油，其中α-细辛醚是其主要有效成分，去油煎剂有一定作用，但作用较弱。

Chemical components of the essential oil in stem and leaf of Gynura bicolor DC from Guizhou Province were studied.

研究贵州产紫背天葵的茎叶中挥发油化学成分。

Components were identified which represented 85.1% of the total essential oil by the silica gel column separately.Conclusion 10 components were identified which included Bicyclo (6,3,0) undeca-dien-3-one, 5,5-dimethyl ect. of the essential oil from Angelica acutiloba Kitag were analyzed for the first time.

结果超临界CO2萃取物为黄棕色油状物，得率为0.9%，用GC-MS联用技术从中鉴定出亚油酸乙酯、5，5-二甲基-双环（6，3，0）-1，7-十一烯-3-酮等30种成分，占挥发油总含量65.66%；萃取物经硅胶柱色谱分离纯化，从中鉴定出十八酸乙酯等11种成分，占总含量的85.1%。

Components were identified which represented 65.66% of the total essential oil includding 9.12-octadecadienoic acid, ethyl ester and ect. 11 components were identified which represented 85.1% of the total essential oil by the silica gel column separately.conclusion 10 components were identified which included bicyclo (6,3,0) undeca-dien-3-one, 5,5-dimethyl ect.

结果超临界co2萃取物为黄棕色油状物，得率为0.9%，用gc-ms联用技术从中鉴定出亚油酸乙酯、5，5-二甲基-双环（6，3，0）-1，7-十一烯-3-酮等30种成分，占挥发油总含量65.66%；萃取物经硅胶柱色谱分离纯化，从中鉴定出十八酸乙酯等11种成分，占总含量的85.1%。

Any of various aromatic southwest Asian or Mediterranean plants of the genus Ruta, especially the ornamental R. graveolens, having bipinnately compound leaves that yield an acrid, volatile oil formerly used in medicine.

芸香：一种生长于亚洲西南部或地中海沿岸的芸香属植物，尤指装饰用的臭芸香，具有羽状复叶，能生产一种旧时作药用的刺激性的挥发油

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。