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首页> 美国卫生研究院文献>Plants >Chemical Composition Enantiomeric Distribution and Sensory Evaluation of the Essential Oils Distilled from the Ecuadorian Species Myrcianthes myrsinoides (Kunth) Grifo and Myrcia mollis (Kunth) DC. (Myrtaceae)
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Chemical Composition Enantiomeric Distribution and Sensory Evaluation of the Essential Oils Distilled from the Ecuadorian Species Myrcianthes myrsinoides (Kunth) Grifo and Myrcia mollis (Kunth) DC. (Myrtaceae)

机译：从厄瓜多尔物种Myrcianthes myrsinoides（Kunth）Grifo和Myrcia mollis（Kunth）DC蒸馏的精油的化学组成对映体分布和感官评估。 （桃金娘科）

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The essential oils of and , belonging to the Myrtaceae family, were obtained by steam distillation. They were analyzed by gas chromatography-mass spectrometry (GC-MS), gas chromatography-flame ionization detector (GC-FID), enantioselective gas chromatography, and gas chromatography-olfactometry (GC-O). A total of 58 compounds for essential oil (EO) and 22 compounds for EO were identified and quantified by GC-MS with apolar and polar columns (including undetermined components). Major compounds (>5.0%) were limonene (5.3%–5.2%), 1,8-cineole (10.4%–11.6%), ( )-caryophyllene (16.6%–16.8%), -calamenene (15.9%–14.6%), and spathulenol (6.2%–6.5%). The enantiomeric excess of eight chiral constituents was determined, being (+)-limonene and (+)-germacrene D enantiomerically pure. Eight components were identified as determinant in the aromatic profile: α-pinene, β-pinene, (+)-limonene, γ-terpinene, terpinolene, linalool, β-elemene and spathulenol. For , the major compounds (>5.0%) were α-pinene (29.2%–27.7%), β-pinene (31.3%–30.0%), myrcene (5.0%–5.2%), 1,8-cineole (8.5%–8.7%), and linalool (7.7%–8.2%). The enantiomeric excess of five chiral constituents was determined, with ( )-α-pinene and (+)-germacrene D enantiomerically pure. The metabolites β-pinene, 1,8-cineole, γ-terpinene, terpinolene, linalool, and ( )-β-caryophyllene were mainly responsible for the aroma of the EO. Finally, the essential oil has an inhibitory activity for cholinesterase enzymes (IC of 78.6 μg/mL and 18.4 μg/mL vs. acethylcholinesterase (AChE) and butyrylcholinesterase (BChE) respectively). This activity is of interest to treat Alzheimer’s disease.
机译：通过蒸汽蒸馏获得属于桃金娘科的和的精油。通过气相色谱-质谱（GC-MS），气相色谱-火焰电离检测器（GC-FID），对映选择性气相色谱和气相色谱-嗅觉测定（GC-O）对它们进行了分析。气相色谱-质谱联用非极性和极性色谱柱（包括不确定组分）鉴定并定量了58种精油（EO）化合物和22种EO化合物。主要化合物（> 5.0％）为柠檬烯（5.3％–5.2％），1,8-桉树脑（10.4％–11.6％），（）-石竹烯（16.6％–16.8％），-a烯（15.9％–14.6％） ）和芦荟酚（6.2％–6.5％）。确定了八个手性成分的对映体过量，即（+）-柠檬烯和（+）-germacrene D对映体纯。确定了八种成分作为芳香族特征的决定因素：α-pine烯，β-pine烯，（+）-柠檬烯，γ-萜品烯，萜品油烯，芳樟醇，β-榄香烯和五香酚。对于，主要化合物（> 5.0％）为α-pine烯（29.2％–27.7％），β-pine烯（31.3％–30.0％），月桂烯（5.0％–5.2％），1,8-桉树脑（8.5％） –8.7％）和芳樟醇（7.7％–8.2％）。确定了五个手性成分的对映体过量，其中（）-α-pine烯和（+）-germacrene D对映体纯。代谢物β-pine烯，1,8-桉树脑，γ-萜品烯，萜品油烯，芳樟醇和（）-β-石竹烯的主要成分是EO的香气。最后，精油对胆碱酯酶具有抑制活性（IC分别为78.6μg/ mL和18.4μg/ mL，而乙酰胆碱酯酶（AChE）和丁酰胆碱酯酶（BChE）。这项活动对于治疗阿尔茨海默氏病很重要。

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