共查询到19条相似文献,搜索用时 68 毫秒
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桂花精油化学成分研究 总被引:17,自引:0,他引:17
用水蒸汽蒸馏法对江苏产桂花精油进行了提取, 并用GC-MS联用仪对其有效成分进行了测定. 结果表明: 江苏产桂花精油的香味成分主要是萜烯、醇类、氧化芳樟醇类、 5-己基二氢呋喃-2-酮、紫罗兰酮类、邻苯二甲酸酯类, 其中邻苯二甲酸酯类含量最大. 对水蒸汽蒸馏后的桂花水溶液进行萃取和GC-MS测试, 进一步证实了邻苯二甲酸酯的存在. 与其它产地的桂花精油化学成分比较, 其主要的香味成分基本相同, 但邻苯二甲酸酯含量不同, 这一研究结果表明: 研究不同产地的香料香味成分时需要将多种提取方法结合;对现有应用于化妆品和食用香精的桂花精油是否含有邻苯二甲酸酯需作进一步的研究. 相似文献
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硬尖神香草挥发油化学成分研究 总被引:1,自引:0,他引:1
硬尖神香草(Hyssopus Cuspidatus Boriss.)属唇形科植物,分布在新疆北部广大地区,是新疆维吾尔族医用药“祖发”来源之一。有关硬尖神香草挥发油的化学成分,文献记载主要含l-蒎茨酮(l-Pinocamphone),全草挥发油经分离纯品,波谱鉴定确证主要成分为d-松香芹酮(d-Pinocarvone),与文献记载不一致。同时分离得l-蒎莰酮、β-蒎烯和1,8-桉叶素3种含量较 相似文献
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Minji Hong Ponnuvel Deepa Ki-Yeon Lee Kyunghee Kim Kandhasamy Sowndhararajan Songmun Kim 《Molecules (Basel, Switzerland)》2022,27(19)
Agastache rugosa (baechohyang) is one of the most important aromatic plants native to the Republic of Korea. A. rugosa fragrance has been used to prepare incense since the Goryeo Dynasty in Korea. The present study aimed to explore the variation in the composition of essential oils from A. rugosa among native populations in Korea. The seeds of A. rugosa were collected from 90 different sites in Korea and seedlings were raised in the nursery. Essential oils were extracted from these populations by the steam distillation extraction method and their chemical compositions were analyzed by GC-MS. The yield of essential oils of A. rugosa ranged between 0.11% and 0.86%. A total of 204 components were identified from 90 populations of A. rugosa. Out of 204 components, 32 components were common in more than 40 individuals of A. rugosa and these 32 components were selected for principal component analysis (PCA). On the basis of the essential oil compositions, six chemotypes—estragole, pulegone, methyl eugenol, menthone, isopulegone, and nepetalactone—were distinguished according to their major components. As a result of the cluster analysis, 90 individuals of A. rugosa could be classified into three groups: estragole, methyl eugenol, and pulegone. A. rugosa exhibited significant chemical diversity among the individuals. The distribution of chemotypes is associated with the collection of seeds, suggesting that genetic diversity may influence the variations in the chemical compositions and concentrations within the species. This chemical diversity serves as the background to select cultivars for the cultivation and industrial applications of A. rugosa cultivars with high essential oil yield and concentration of its chemical components. 相似文献
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两种红景天挥发油化学成分分析 总被引:1,自引:0,他引:1
红景天为藏族用药,藏名为"扫罗玛尔布",为景天科(Crassulaceae)红景天属(RhodiolaL.)植物,其根、茎、叶、花、种子均可入药。红景天性味甘、涩、寒,用于活血止血,清肺止咳。民间常用于治疗肺炎咳嗽、咯血、咳血、妇女白带、四肢肿胀,外用治跌打损伤、烫火烧伤。近年研究表明红景天具有强壮、抗缺氧、抗寒冷、抗疲劳、抗微波辐射及兴奋大脑和脊髓作用。可以提高体力和脑力劳动的工作效率,延缓机体衰老,防治疾病等功能。因此在军事医学、航天医学及运动医学上有着十分重要的意义。目前从各种红景天分离得到的主要化学成分有酚类、黄酮及二者的甙类,此外还有香豆精、有机酸、蒽醌、甾类、萜类、生物碱、内酯、鞣质、脂肪、蛋白质等。红景天具有诱人香气,含有微量挥发油,但目前有关红景天挥发油的深入研究报道很少,我们采用气相色谱-质谱-计算机联用法分别对青海和云南红景天挥发油的化学成分进行了分析,并用峰面积归一化法测定了各成分相对百分含量。 相似文献
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湘西金银花挥发油化学成分研究 总被引:14,自引:0,他引:14
采用GC/MS/DS联用仪对湘西金角花挥发油中的化学成分进行了研究。并鉴定出40种组分。其主要成分为:芳樟醇、环氧芳樟醇、α-萜品醇、顺-3-已 烯醇、顺芷酸-3、己烯酯、香叶醇、氧化芳樟醇、法尼醇、顺-苯酮、法尼烯、大根香叶烯、橙花醇等。其中芳樟醇含量最高,约占精油总量的20%。 相似文献
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