月桂烯

After ultra high pressure treatment, limonene concentration was decreased greatly while myrcene and α-pinene concentrations were not changed significantly and the concentration of limonene was decreased by 75% after high pressure treatment of 500 MPa for 15 min,α-terpineol and carvone concentrations were increased significantly. The aldehydes concentrations were retained well. The ester concentrations were changed under high pressure treatment, but generally their concentrations were not changed remarkably.

通过定量检测分析发现：超高压处理对橙汁中的柠檬烯成分影响很显著，经500 MPa的压力处理15 min后其含量下降了75%，而月桂烯和α-蒎烯受高压影响较小；α-松油醇、香芹酮含量经高压处理后迅速增加；醛类特征香气成分基本不受高压影响；酯类成分在高压下会发生变化，但总体变化不显著。

Maturation feeding weevils displayed higher anemotaxis responses to -β- pinene, myrene and limonene than those of sexually matured weevils; whereas - carene, which was detected only in volatiles of trunk phloem, elicted more olfactory respones of sexually matured weevils than of maturation feeding weevils.

在华山松枝梢挥发物中含量较高的-β-蒎烯、月桂烯和柠檬烯引起补充营养期华山松木蠹象较大的趋向反应；在华山松树干韧皮部挥发物中含量较高的3--蒈烯则引起交尾产卵期的华山松木蠹象较大的趋向反应。

Chromatography peaks were obtained by GC-MS and 56 compounds were identified. The main components were linalyl butyrate (30.212%),(1α, 3α, 4β, 6α)-4,7,7-trimethyl-bicycloheptan-3-ol (10.940%),-4-carene (1.826%), 4-methylene-1-(1-methylethyl)-bicyclo [3.1.0] hexane (1.109%),β-myrcene (1.170%), limonene (5.784%), 3, 7-dimethyl-1, 6-octadien-3-ol (5.742%), n-hexadecanoic acid (0.914%) and-9, 12-octadecadienoic acid (2.952%), etc.

用GC-MS分离出69个峰，鉴定出56种物质，主要成分为：芳樟丁酸酯(30.212%)、(1α， 3α， 4β， 6α)-4，7，7-三甲基－双环[4.1.0]庚烷－3-醇(10.940%)、-4-蒈烯(1.826%)、4-亚甲基－1-（1-甲基乙基）－双环[3.1.0]环己烷(1.109%)、β-月桂烯(1.170%)、柠檬烯(5.784%)、3，7-二甲基－1，6-辛二烯－3-醇(5.742%)、n-棕榈酸(0.914%)、-9，12-十八碳烯酸(2.952%)等。

And the contents of high boiling point components such as camphor, borneol and bornyl acetate in flower oil which are 11.97 %,8.48 % and 4.29 % respectively, are higher than those in leaf oil.

含量测定结果表明花油中α-蒎烯，莰烯，β-蒎烯，α-水芹烯和β-月桂烯等低沸点成分含量分别为17.58 %，13.19 %，1.13 %，2.03 %，1.02 %，比叶油低；而樟脑，龙脑和乙酸龙脑酯等高沸点成分的含量分别为11.97 %，8.48 %，4.29 %，比叶油高。

The DielsAlder reaction of myrcene and acrolein over ZnCl2/NaY prepared by solidstate interaction under microwave irradiation, conventional heating physical mixture, and over ZnNaY prepared by ion exchange in solution was studied.

比较了微波固相法、普通加热法和简单混合法制备的ZnCl2／NaY及溶液离子交换法制备的ZnNaY在月桂烯与丙烯醛DielsAlder反应中的催化性能，发现微波固相法制备的催化剂表现出最高的环加成选择性和区域选择性。

Diels-Alder reaction between β-myrcene and maleic anhydride catalyzed by SO(superscript 2- subscript 4)/TiO2-ZrO2 solid superacid was investigated.

研究了SO(上标 2-下标 4)/TiO2-ZrO2型固体超强酸催化剂的制备及其催化β-月桂烯与马来酸酐的Diels-Alder反应，通过GC、GC-MS和红外分析，确定其主产物为4-（4-甲基－3-戊烯基）－4-环己烯-1，2-酸酐。

Linear dimerization of isoprene to form myrcene ;2. Synthesis of Unsaturated Cyclothioethers byCycloaddition Reactions of Myrcene;3. The traditional synthesis is by the way of Diels-Alder reaction of myrcene with acrolein over Lewis acid catalysts in organic solvent.

二烷基咪唑或烷基吡啶卤化物与ZnCl2 构成一类新型的具有Lewis酸性的离子液体，以其为催化剂和反应介质，通过月桂烯与丙烯醛的Diels Alder反应高区域选择性地合成了对位柑菁醛。

Synthesis and Structural Analysis of New Monoterpene Derivatives from β-myrcene ;2. Diels-Alder reaction between β-myrcene and maleic anhydride catalyzed by SO2-4/TiO2-ZrO2 solid superacid was investigated.

研究了SO42-/TiO2-ZrO2型固体超强酸催化剂的制备及其催化β-月桂烯与马来酸酐的Diels-Alder反应，通过GC、GC-MS和红外分析，确定其主产物为4-(4-甲基-3-戊烯基)-4-环己烯-1，2-酸酐。

The selective linear dimerization of isoprene to formate myrcene in a single phase catalyst solution prepared by mixing two metals, amine, solvent and a small content of isoprene was studied.

摘 要：研究了异戊二烯在两种金属催化作用下均相线性二聚生成月桂烯的影响因素，得到优惠工艺条件：反应温度 13℃，催化剂∶异戊二烯=0 。0 5∶1 0 ，胺∶异戊二烯=0 。0 7∶1.0。

Samples were subjected to high pressure ranging from 100 to 500 MPa. After high pressure treatments, the flavour compounds were extracted by Solid-Phase Microextraction. Analysis was carried out by Gas Chromatography-Mass Spectrometry. The key flavour compounds of orange juice were three alkenes (namely limonene, myrcene and α-pinene), two alcohols (linalool and α-terpineol), three aldehydes, one ketone and two esters (ethyl butyrate and 3-OH-ethyl hexanoate).

采用固相微萃取（Solid Phase Microextraction，SPME）方法对不同压力（100～500 MPa）超高压处理的鲜榨橙汁中的香气成分进行富集，并经气相色谱-质谱联用仪（Gas Chromatography-Mass Spectrometry，GC-MS）检测分析，橙汁中的主要香气成分有：3种烯（柠檬烯、月桂烯、α-蒎烯）；2种醇；3种醛；1种酮；2种酯（丁酸乙酯、3-OH-己酸乙酯），它们是构成橙汁的主要特征致香成分。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。