荜澄茄

Any of several plants of the genus Piper, as cubeb, betel, and kava.

胡椒属植物任何一种胡椒属植物，如荜澄茄、槟榔子和卡瓦胡椒

Results: the yield rate of the collected volatile oil of artemisia indica and artemisia feddei was 0.32%, 0.29%, respectively. the main constituents of them were as follows: eucalyptol, camphor, borneol, terpineol, cubebene, caryophyllene, caryophyllene oxide, germacrene d, etc, which was similar to the constituents of volatile oil from artemisia argyi. but the contents of volatile oil were different in different medicinal materials. longiverbenone with high content in artemisia feddei was can not be detected in artemisia indica and artemisia argyi.

结果：广西产五月艾与细叶艾挥发油的得率分别为0.32%、0.29%；五月艾、细叶艾和艾叶挥发油中均含有桉油精、樟脑、龙脑、松油醇、荜澄茄油烯、石竹烯及其氧化物、大根香叶烯d等药效成分，但各成分在不同药材中的含量存在一定差别；此外，细叶艾挥发油中含量较高的长叶马鞭烯酮在五月艾和艾叶挥发油中均未检出。

The main constituents of the essential oil from the seeds of Schisandra chinensis were found to be Copaene,α-Farnesene and α-Cubebene.Some components such as δ-Selinene,Germacrene B and Germacrene D,etc.,have not been reported before.

五味子种子挥发油的主要成分为烯，α-金合欢烯、α-荜澄茄油烯，与以前报道的果实挥发油成分有所不同。

The main volatile compounds were recorded, such as à-Cubebene (1.470%), Copaene (3.686%), C-Muurolene (3.152%, Eremophila-1(10), 11-diene (30.145%), Longifolene-(V4)(5.653%), Cadina-3, 9-diene (15.152%), Copaene (1.232%). The SPME fiber shows better selectivity and sensitivity toward some fragrance compounds comparing with other method.

主要挥发组分如：荜澄茄à-Cubebene (1.470%)、胡椒烯Copaene (3.686%)、衣兰油烯C-Muurolene (3.152%)、雅槛兰－1(10)，11-二烯Eremophila-1(10)，11-diene (30.145%)、长叶松萜烯Longifolene-(V4)(5.653%)、杜松－3，9-二烯Cadina-3，9-diene (15.152%)、古巴烯Copaene (1.232%)等。

ConclusionSupercritical fluids extraction method is feasible for the activities of Litsea cubebaPres., and useful for the large scale production .

结论超临界CO2 流体萃取技术用于荜澄茄挥发性成分提取，方法简单可行，适用于工业化生产。

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效。

ObjectiveTo study the optimal technology of supercritical- CO2 fluid extraction(SFE-CO2) for Litsea cubeba Lour.

作者：王姿媛，何泽民，姜笑寒目的筛选超临界CO2 流体萃取荜澄茄挥发性成分的最佳工艺，并研究萃取物的药效

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐