Mori Masahiro, Ikeda Norikazu, Kato Yoshiko, Minamino Miki, Watabe Kazuhito
Research and Development Division, Institute of Cosmetic Science, Club Cosmetics Co., Ltd., 145-1, Ichibu-cho, Ikoma City, Nara 630-0222, Japan.
Yakugaku Zasshi. 2002 Mar;122(3):253-61. doi: 10.1248/yakushi.122.253.
Essential oils on the market were analyzed using GC-MS and the main ingredients of each essential oil were quantified. Analysis of the essential oil of Lavandula officinalis (lavender oil) showed that each sample had a different ratio of the contents of main ingredients, such as linalool, linalyl acetate, and camphor. In addition, some commercial lavender oils were analyzed by GC-MS for comparison with the Lavandula flagrans (lavandin oil) and the reference standard. As a result of this analysis, although the components of almost all commercial lavender oils were approximately the same as those of the reference standard, there were a few products that contained more than 0.5% of the amount of camphor in lavandin oil. This suggests that some lavender oil samples are mixed with lavandin oil to lower the price. Commercial essential oils of Melaleuca alternifolia (teatree oil) and Mentha piperita (peppermint oil) were also analyzed by GC-MS. Each of the peppermint oil samples had a different ratio in the content of its main ingredient. With respect to teatree oils, the amount of terpinens in each sample differed. These results led to concern about the efficacy of essential oils. For achieve the expected efficacy of essential oils, correct information on their ingredients should be available and quality control using instrumental analysis should be introduced.
使用气相色谱 - 质谱联用仪（GC - MS）对市场上的精油进行分析，并对每种精油的主要成分进行定量。对薰衣草精油（Lavandula officinalis）的分析表明，每个样品中主要成分（如芳樟醇、乙酸芳樟酯和樟脑）的含量比例各不相同。此外，对一些市售薰衣草精油进行了GC - MS分析，以便与杂薰衣草精油（Lavandula flagrans）和参考标准品进行比较。分析结果显示，尽管几乎所有市售薰衣草精油的成分与参考标准品大致相同，但有少数产品中樟脑的含量超过了杂薰衣草精油中樟脑含量的0.5%。这表明一些薰衣草精油样品与杂薰衣草精油混合以降低价格。互叶白千层精油（Melaleuca alternifolia，茶树精油）和薄荷精油（Mentha piperita）的市售精油也通过GC - MS进行了分析。每个薄荷精油样品中主要成分的含量比例各不相同。对于茶树精油，每个样品中萜品烯的含量也有所不同。这些结果引发了对精油功效的担忧。为了实现精油的预期功效，应该提供有关其成分的正确信息，并引入使用仪器分析的质量控制。
