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<正>1格拉斯玫瑰简介格拉斯玫瑰(R.centifolia又称法国千叶、千叶玫瑰、法国玫瑰),是直接从法国引进的玫瑰新品种,法国香水就是由法国玫瑰提炼的玫瑰精油调配而成。法国玫瑰之所以珍贵,是因其香型怡人, 相似文献
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为了驱赶隐蔽的豇豆蓟马,辅助化学药剂防治,采用Y型嗅觉仪测试了16种精油对豇豆蓟马的趋避活性,并观察了其田间趋避作用。结果表明,柑橘精油趋避活性最高,趋避率为86.67%,其次是肉豆蔻精油、香茅精油、大蒜精油、香樟精油等;香樟精油虫口减退率最高,达到45.36%,其次为香茅精油、柠檬精油、桉叶油、姜黄精油、石菖蒲精油。综合选取香樟精油和香茅精油分别组合乙基多杀菌素进行豇豆蓟马田间防效试验,精油与药剂组合比单一施用药剂的防效显著。利用精油的趋避作用和药剂的杀灭组合能显著提高药效,可达到防治豇豆蓟马的目的。 相似文献
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以薄荷为试材,建立气相色谱(GC)测定薄荷芳香水中薄荷脑含量的方法,色谱柱选择5%苯基-甲基聚硅氧烷为固定液的毛细管柱(30m×0.32mm×0.25μm);载气为氮气,流速1.5mL·min-1,氢气流速40mL·min-1;检测器温度280℃;进样口温度250℃;进样量为1μL。采用水蒸气蒸馏法提取薄荷芳香水,以挥发油提取量和薄荷脑含量为考核指标,以加水量、药材浸泡时间和提取时间为考察因素,进行L9(34)正交实验,优选薄荷芳香水的提取工艺。结果表明:采用GC测定薄荷芳香水中薄荷脑的含量,薄荷脑浓度在0.02~0.20mg·mL-1线性关系良好(r=0.999 8),准确度、精密度RSD均小于5%,色谱条件发生小的变动不会影响测定结果。正交实验结果表明,浸泡时间是影响薄荷挥发油提取的主要因素,其次为提取时间、加水量;最佳提取工艺为加8倍量水,浸泡1.5h,提取3.0h。 相似文献
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F. Kidd C. West D. G. Griffiths N. A. Potter 《The Journal of Horticultural Science and Biotechnology》2013,88(3):179-191
The volatile oil contents of dried leaves of Majorana hortensis, Melissa officinalis, Ocimum basilicum, Origanum vulgare, Salvia officinalis and Thymus vulgaris reached maximum values in summer. Different harvest dates are required in order to obtain the highest yields of dried leaves ha-1, the highest levels of volatile oil in the dried leaves, and the highest yields of volatile oil ha-1. The upper parts of balm, oregano and sage plants yielded the most dried leaves, but the lower parts showed the highest levels of volatile oil in the dried leaves. 相似文献
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利用秋水仙素处理二倍体紫苏幼苗生长点,选育出3个四倍体紫苏新品种。其叶片皱缩增厚,花变大,种子千粒质量增加,但育性低,种子量少。其中‘多紫1号’叶绿色,平均株高115 cm,叶片挥发油含量1.23%,茎中迷迭香酸含量0.63%;‘多紫2号’叶两面纯紫色,平均株高110 cm,叶片挥发油含量0.79%,茎中迷迭香酸含量1.34%;‘多紫3号’叶紫色绿心,背面紫色,平均株高100 cm,叶片挥发油含量0.63%,茎中迷迭香酸含量1.38%。 相似文献
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Cassumunar ginger, Zingiber montanum (Koenig) Link ex Dietr. (Zingiberaceae), is called Phlai in Thailand. The current study investigates the levels of antioxidant activity and major volatile oil components in cassumunar ginger exposed to varying water deficits (0, 30, 60, 90 and 120 days before harvest) and light intensities (100%, 50% and 25% sunlight). A 120-day water deficit resulted in high volatile oil content and increased sabinene content, but DPPH scavenging activity was not affected. The quantity of volatile oil in the cassumunar ginger exposed to a 120-day water deficit was almost twice that of both the control and the sample exposed to a 30-day deficit. The highest terpinen-4-ol content was obtained after a 60-day water deficit, and (E)-1-(3′,4′-dimethoxyphenyl) butadiene content tended to decrease with prolonged water deficiency. The antioxidant activities of cassumunar ginger were 52.98%, 41.75% and 42.93% in plants grown at 100%, 50%, and 25% sunlight, respectively. Light intensity of 50% or 25% increased the biomass of cassumunar ginger but decreased the volatile oil content; antioxidant activity was not significantly affected. 相似文献
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杨梅果实挥发油的气-质联用分析 总被引:3,自引:1,他引:2
首次对新鲜和贮藏的木叶杨梅(Myrica rubra Sieb.et Zucc.)果实挥发油(volatile oils)进行了GC-MS联用分析比较。新鲜果实挥发油分离得到58个色谱峰,从中鉴定出49种成分,占挥发油相对含量的96.03%;3~5℃贮藏5 d后的果实挥发油分离得到66个色谱峰,从中鉴定出57种成分,占挥发油相对含量的87.17%。木叶杨梅果实中因含大量单萜及倍半萜而带有浓郁的甜香、花香和木香。杨梅贮藏过程中挥发油萜类化合物种类和含量变化明显,使杨梅的香气、口感发生改变,新鲜度降低。贮藏过程中具有抗菌作用化合物的消失和含量的减少,使杨梅果实抗菌防腐能力降低。研究结果为杨梅果实的保鲜、加工和开发提供了参考依据。 相似文献