乾燥および生こひげの水蒸気揮発性油の成分

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The authors elucidated the composition of the steam volatile oil from Juncus effusus L. var. decipiens Buch, forma utilis Makino. The steam volatile oils were obtained by steam distillation of dried and fresh herbs, respectively. The steam volatile oils were treated with 5% sodium bicarbonate solution, then with 5% sodium hydroxide solution, and were separated into the three fractions: neutral, sodium bicarbonate and sodium hydroxide soluble fractions. Each fraction was investigated by means of column chromatography, gas chromatography, infrared spectrum, nuclear magnetic resonance spectrum and chemical method, respectively. The following compounds were identified or tentatively identified and, relative quantities (%) of major compounds in dried and fresh herb oils were analyzed. (dried herb %, fresh herb %); linalool (tr., 0.2), undecan-2-one (0.2, 0.2), tridecan-2-one (2.1, 0.5), p-menth-4-en-3-one (0.6, 0.6), 1, 2-dihydro-1, 5, 8-trimethyl naphthalene (0.1, 0.4), α-ionone (2.0, 0.9), β-ionone (1.3, 0.3), β-bisabolene (1.9, 0.3), β-phenyl ethyl alcohol (1.7, 1.2), phenol (0.7, 0.3), p-cresol (1.6, 0.4), 6, 10, 14-trimethyl pentadecan-2-one (20.1, 20.9), eugenol (2.0, 1.1), dihydro actinidiolide (10.2, 23.5), α-cyperone (6.0, 10.5), vanillin (6.0, 1.2), C12_??_C24 hydrocarbons, capric acid, lauric acid, myristic acid, palmitic acid, oleic acid and linoleic acid.
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