Chemical Variation in Essential Oil of Cymbidium sinense Flowers from Six Cultivars
Chemical Variation in Essential Oil of Cymbidium sinense Flowers from Six Cultivars
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六个品种蕙兰花精油的化学变异
DOI：
10.1080/0972060x.2017.1311236
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发表时间：
2017-01-01
影响因子：
2.4
通讯作者：
Wang, Zai-hua
中科院分区：
文献类型：
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作者：
Li, Jie;Zhu, Gen-fa;Wang, Zai-hua
摘要墨兰是亚洲热带、亚热带地区的一种传统兰科植物，因其花香叶美而备受关注。采用同时蒸馏萃取法从6个品种的花中提取精油。经GC-MS分析，共鉴定出50个化合物，占挥发油总量的78.40-97.96%。主要成分为金合欢醇（0.66-12.51%），正二十四醇-1（1.07-7.77%），二氢-β-紫罗兰酮（0.34-13.16%），β-紫罗兰酮（0.37-20.23%），五聚体（10.28-17.51%），二十七烷（6.43-11.90%）、α-紫罗烯（2.89-9.14%）、二十三烷（5.30-8.86%）、对甲酚（0.96-6.32%）、正十六烷酸（1.81-6.72%）和亚油酸（0 ~ 16.86%）。醇类和酮类化合物含量最高的品种是白嘴白墨，分别为20.28%和33.77%。通过系统聚类分析，将6个品种根据精油成分分为3个化学型。主成分分析（PCA）也揭示了化学多态性的C。sinense花，这可能归因于遗传因素。这项工作代表了第一个研究的精油从C。为进一步开发利用这一兰花资源提供了依据。
Abstract Cymbidium sinense is a traditional orchid in the tropical and subtropical regions of Asia, and it has attracted attention because of its fragrant flowers and graceful leaves. Essential oils were extracted by simultaneous distillation-extraction (SDE) from the flowers of six cultivars. GC-MS analysis revealed fifty compounds, constituting 78.40-97.96% of the total essential oils. The main constituents were farnesyl alcohol (0.66-12.51%), n-tetracosanol-1(1.07-7.77%), dihydro-β-ionone (0.34-13.16%), β-ionone (0.37-20.23%), pentacosan (10.28-17.51%), heptacosane (6.43-11.90%), α-ionene(2.89-9.14%), tricosane (5.30-8.86%), p-cresol (0.96-6.32%), n-hexadecanoic acid (1.81-6.72%) and linoleic acid (0-16.86%). ‘Baizui baimo’ seemed to be the richest cultivar in alcohols (20.28%) and ketones (33.77%). Six cultivars were separated into 3 chemotypes by hierarchical cluster analysis, according to the composition of the corresponding essential oils. The principal component analysis (PCA) also revealed chemical polymorphism in the essential oils of the C. sinense flowers, which could be attributed to genetic factors. This work represents the first study of essential oils from C. sinense flowers, and it gives further knowledge for exploitation and application of this orchid resource.