柠檬

Result The results showed that 34 compounds of the volatile oil were identified, which accounted for 90.10% of all. The main chemical compounds were camphene (10.030%), beta-pinene (8.826%), limonene (7.935%), caryophyllene (12.457%). The antibacterial experiments of the volatile oil showed that the volatile oil had antibacterial activities to Staphylococcus aureus, but had no inhibition against Escherichia coil and Rhodotorula glutinis.

结果］经毛细管色谱分析分离，共确认出其中34种成分，所鉴定出化学成分的质量占总量的90.10%以上，应用色谱峰面积归一法分析各成分的质量分数，其主要化学成分是莰烯(10.030%)、-β-蒎烯(8.826%)、柠檬油(7.935%)、丁子香烯(12.457%)；并发现其化学成分对金黄色葡萄球菌有较强的抑制作用，对大肠杆菌、红酵母无明显作用。

The results indicated that there were 9 kinds of monoterpenes and 3 kinds of sesquiterpenes were identified both in healthy and weak trees.The components included Thujene,α-Pinene,β-Phellandrene,β-Pinene,Camphene,3-Carene,Limonene, Terpinene,p-Mentha-1,4(8)-diene,Cedrene,Thujopsene andα-Caryophyllene.

结果表明，与健康侧柏相比，衰弱侧柏树干中没有检测到新的化学组分产生，同样是由苧烯、α-蒎烯、莰烯、β-蒎烯、β-水芹烯、3-蒈烯、柠檬烯、萜品烯、p-薄荷-1，4(8)二烯共9种单萜和雪松烯、罗汉柏烯和石竹烯3种倍半萜烯组成。

Methoxy sec-ethyl acetate, Ethyl acetate, Ethyl forate,α-Pinene,β-Pinene, Camphene, Junipene, Limonene, P-Cymene, Linalool and Terpinole are regarded as the key flavorous components, which result in the peculiar smell and taste in fruits of Rubus L..

综合分析表明，甲氧基次乙基乙酸酯、乙酸乙酯、甲酸乙酯、α-蒎烯、β-蒎烯、莰烯及桧烯、柠檬烯、对伞花烃、芳樟醇、萜品醇类等化合物是四种悬钩子类果实的主要香味成分。

By means of GC, GC-MS, GC-IR, IR, H1-NMR,the reaction products were investigated and the results showed that there are camphene, limoneneN terpinolene, Me a -fenchyl ether, Me -terpinyl ether, Me bornyl ether and Me isobornyl ether containing in the products,and the content of the main product Me a -terpinyl ether is up to 42.5%,the selectivity is 44.7%.

采用GC、GC-IR、GC-MS、IR、H~1-NMR等对反应产物进行定量和定性分析，结果表明：微波辐射下α-蒎烯与甲醇的反应产物含有莰烯、柠檬烯、α-小茴香甲醚、异松油烯、异菠基甲醚、菠基甲醚、α-松油基甲醚等，在较好的工艺条件下，主产物α-松油基甲醚的得率为42.5％，选择性为44.7％。

Compareing with essential oil of the steam distillation method and the bensine solvent extraction method through GC-MS analysis .The result showed that:the essential oil principal constituent extracted by benzine is camphene,a-pinene,bornyl acetate, limonene, 1-methyl-4-(1-methylethyl)-1,4-cyclohexadiene, myrcene, caryophyllene, borneol.

对巴山冷杉针叶水蒸气蒸馏和石油醚萃取所得精油的GC-MS 分析对比研究结果表明：石油醚萃取精油主要成分为：莰烯，a-蒎烯，乙酸龙脑酯，柠檬烯，1-甲基-4-异丙基-1，4-环己二烯，月桂烯，石竹烯，龙脑。

Among them,--α-Pinene、--β-Pinene、--3-Carene are the three main compounds which account for above 96% of monoterpines, and a small amount of other monoterpines,-limonene, myrcene, camphene, phellandrene.

而对于经常构成蠹类害虫树体引诱剂组分的萜烯类成分在其中占居较高的比重，主要为3种成分--3-蒈烯，--α-蒎烯和--β-蒎烯，占萜烯类总量96％以上。另外还含有少量的柠檬烯、香叶烯、莰烯和萜品油烯等成份。

Results Ten essential characteristic components have been identified in thirteen batches of Amomum villosum samples, and their relative content was (88.15±2.97)%, which are the representative components. The main components were α-pinene, camphene,β-pinene,β-myrcene, limonene, linalol, camphor, isoborneol, borneol and borneol acetate.

结果 13批次阳春砂仁均含有α-蒎烯、茨烯、β-蒎烯、β-月桂烯、柠檬烯、芳樟醇、樟脑、异龙脑、龙脑、乙酸龙脑酯等10个主要特征成分，合计相对含量达(88.15±2.97)%，具有一定代表性。

By means of GC, GC-MS, GC-IR, the reaction products were investigated and the results showed that there are triylene, camphene, limonene, p-cymene, terpinolene -terpinene,-terpinene,-fenchyl formate, linalyl formate, terpinyl formate, bornyl formate and isobornyl formate containing in the products,and linalyl formate was first discovered in addition reaction of a -pinene and formic acid .The content of the main product terpinyl formate is up to 60.4%,the selectivity is 64.5%.

采用GC、GC-IR、GC-MS等对反应产物进行定量和定性分析，结果表明：微波辐射下α-蒎烯与甲酸的反应产物含有三环烯、莰烯、对-伞花烃、α-松油烯、γ-松油烯、柠檬烯、异松油烯、甲酸葑醇酯、甲酸异龙脑酯、甲酸龙脑酯、甲酸芳樟酯、甲酸松油酯。

Red watermelon juice, orange juice, oranges of the Moon, Huang Cancan the lemon juice, plus a tall glass.

红艳艳的西瓜汁、橙亮亮的橙子汁、黄灿灿的柠檬汁，加上一个高脚玻璃杯。

A sweet cake flavored with sesame or caraway seeds and lemon.

用芝麻、油菜籽和柠檬当佐料的甜蛋糕。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。