油精

The result showed that there was significant botanical character difference among the three varieties of rosemary; the content of essential oil of Rosmarinus officinalis L is higher than that of Rosmarinus officinalis 'Rex' and Rosmarinus officinalis 'Wood' with 0.80, 0.46 and 0.40 mL(100g)^(-1)FW respectively;α-pinene、1,8-cineole、verbenone、geraniol and borneol were the main compositions of essential oil from Rosmarinus officinalis L, with 27.26%, 20.92%, 11.75%, 5.92% and 5.07% respectively; the major components of essential oil of Rosmarinus officinalis 'Rex' were 1,8-cineole、camphor、borneol、α-pinene and camphene, accounting for 31.07%, 21.66%, 11.98%, 5.36% and 5.34% respectively; in Rosmarinus officinalis 'Wood', camphor、1,8-cineole、bornyl acetate、borneol、α-pineneand camphene were the major compositions with 24.69%, 23.96%, 6.76%, 5.94%, 5.80% and 5.28% respectively.

结果表明：三种迷迭香的植物学性状，如外形、花色等差异显著；迷迭香的精油含有率较高，为0.80mL(100g)^(-1)FW，Rex迷迭香和Wood迷迭香的精油含有率低，分别为0.46和0.40mL(100g)^(-1)FW；迷迭香的主要成分为α-蒎烯27.26%、1，8-桉叶素20.92%、马鞭烯酮11.75%、香叶醇5.92%、龙脑5.07%等，Rex迷迭香精油中1，8-桉叶素31.07%、樟脑21.66%和龙脑11.98%、α-蒎烯5.36%、莰烯5.34%是其主要成分，Wood迷迭香精油的主要成分为樟脑24.69%、1，8-桉叶素23.96%、醋酸龙脑酯6.76%、龙脑5.94%、α-蒎烯5.80%和莰烯5.28%等。

Part of the findings shows the composition of pythoncidere is similar to that of the steam-distilled Cryptomeria japonica essential oil, based upon which an experiment about the Cryptomeria japonica essential oil's effect on animals is conducted. This leads to a further finding that the major element of terpene "limonene"is quite effective to central nervous system, and it can be hypnotic, anxiolytic and analgesic.

该研究还发现芬多精的组成与利用水蒸气蒸馏的柳杉精油的成分相类似，於是进一步以柳杉精油进行动物试验，发现了柳杉中的芬多精及其主要的萜类成分－「柠檬烯」，对动物中枢神经系统有相当大的影响，而且具有安眠、抗焦虑及镇痛的功效。

The essential oil was prepared from the peel by solution extraction, and separated into fractions of hydrocarbon and oxygenated compounds through a silicagel column. As the oxygenated fraction had the characteristic aroma of the peel oil, odor quality of the fraction was estimated on the basis of a odor unit value. Twenty five compounds such as geranial, neral, linalool and aliphatic aldehydes were selected as the components contributed to the aroma of the peel oil.

用溶剂萃取法提取白柠檬果皮的精油，并用硅胶柱将精油分成碳氢化合物和含氧化合物两大部分，由于含氧化合物部分具有果皮油的特征香气，利用各成分的香气值对该部分进行了评价，明确了香叶醛、橙花醛、沉香醇以及一些脂肪族醛等25种成分对白柠檬果皮油香气起着重要作用。

In addition to rose, tea tree, lavender and a few varieties, most pure essential oils can not be directly used for the skin, or cause burns, peeling, if the business introduced to you the essential oils that can be directly applied to the skin, said that it was pure essential oil, then there is a problem.

除了玫瑰、茶树、熏衣草等少数品种，绝大多数纯精油是不可直接用于皮肤的，否则会造成灼伤、脱皮，如果商家介绍给你的精油说可以直接用于皮肤，还说是纯精油，那就有问题了。

The height of plant was measured every 15 days. The essential oil of the lemon verbena was obtained by steam distillation in different period of growth and analyzed by GC and GC-MS.

测定了株高变化，用水蒸汽蒸馏装置提取精油，用气相色谱仪和气相色谱质谱联用仪分析了不同时期精油含有率与成分的变化，对比不同器官、不同部位和不同采样时间的精油含有率的差异。

Consists of many flavor components. We chose Kaempferia galanga L. planted in Yangjiang, Guangdong province as the sample and extracted the essence oil by enzyme-decomposing together with steam distillation.

本文选用广东阳春所产鲜沙姜用酶解法配合水汽蒸镏提取其中精油，并对此精油进行气相色谱-质谱分析，以确定广东阳春沙姜精油的成分及含量。

The research of antifeedant toxicity of bitter almond oil against 3th instar larve of Mythimna separata Walke showed that under the higher concentration, the antifeedant rates are above 95.78% at the test time, but under the lower concentration, the antifeedant rates are decreased with prolonging the treatment time.

苦杏仁精油对粘虫的拒食活性结果表明在高浓度下，精油对粘虫的拒食率达95.78%以上，而低浓度精油随着处理时间的延长，对粘虫的拒食活性逐渐降低。

Based on the experiment of dissolving EPS plastics by two essential oils, 1g terpenoid oil dissolves 0.65g EPS plastics, after dissolving the volume of EPS plastics decreases to 5%; terpeneless compound can not dissolve EPS plastics.

实验研究了两类精油对发泡聚苯乙烯塑料的溶解效果。1g萜烯烃类精油溶解0.65g发泡聚苯乙烯塑料，溶解后的塑料体积约为原体积的5%。低萜精油不能溶解发泡聚苯乙烯塑料。

The prior research of Research and Development Center of Biorational Pesticide Northwest Agriculture and Forest University indicated that the clove leaf essential oil and cinnamon essential oil had good effect of fresh-keeping.

西北农林科技大学无公害农药研究服务中心的前期研究结果表明丁香叶油和肉桂精油具有较好的保鲜效果，本论文以砀山酥梨为测试对象，在对丁香叶油和肉桂精油保鲜配方筛选的基础上，对丁香叶油保鲜剂的加工剂型进行了研究，得出以下结果： 1。

Ingredients : Natural organic oil (avocado, olive, palm, coconut, castor); natural essential oil (white camphor, peppermint oil, eucalyptus oil); purified water and sodium hydroxide.

成份 ：天然有机鳄梨油，橄榄油，棕榈油，椰油，篦痲油，白樟脑，薄荷精油，尤加利精油，天然泉水和氢氧化钠。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。