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University of the Ryukyus Repository >
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Bulletin of Arts & Science Division, University of the Ryukyus. Mathematics and sciences >
No.8 (1965/06) >
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| Title | : | 月桃の葉の精油成分について |
| Title alternative | : | On the Essential Oil in the Leaves of Alpinia speciosa K.Schum |
| Authors | : | 外間, 宏三 |
| Authors alternative | : | Hokama, Kozo |
| Issue Date | : | Jun-1965 |
| Abstract | : | The essential oil(285.5g)obtained by steam distillation of leaves of Alpinia speciosa K.Schum (so called Getto,697.4kg)was freed from fatty acid and phenols by washing with 3% sodium hydroxide and water.The oil was then successively evaporated off after drying over sodium sulfate,yielding a neutral material(253.7g).
This substance was divided by fractional distillation into 13 parts.These fractions were gas chromatographed and investigated by IR spectroscopy.After the result,the
next facts were known:1.The monoterpenoids,such as α-pinene.β-pinene,camphene,limonene,p-cymene,and camphor,were identified,and their contents being 7.8%,2.2%,3.8%.4.8%,
6.02% and 2.4％,respectively.2.A paper reported that the contents of camphor and campbene were 30% and 17%,respectively.The contents of them were,however,known to be 2.4% and 3.8%,respectively,by the gas chromatograph. |
| Type Local | : | 紀要論文 |
| ISSN | : | 0557-577X |
| Publisher | : | 琉球大学文理学部 |
| URI | : | http://hdl.handle.net/20.500.12000/23068 |
| Citation | : | 琉球大学文理学部紀要 理学篇 no.8 p.65 -76 |
| Appears in Collections | : | No.8 (1965/06)
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| NO8P065.pdf | | 3323Kb | Adobe PDF | View/Open |
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