リ　ギ   Li Wei   李　巍    所属   東邦大学  薬学部 薬学科    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Composition and seasonal variation of essential oil in Alpinia zerumbet from Okinawa Island.
掲載誌名	正式名：Journal of Natural Medicines ISSNコード：13403443
巻・号・頁	63(2),pp.204-208
著者・共著者	Murakami, Shio; Li, Wei; Matsuura, Mariko; Satou, Tadaaki; Hayashi, Shinichiro; Koike, Kazuo
担当区分	2nd著者,責任著者
発行年月	2009
概要	The compn. of steam-distd. essential oils from the leaves of Alpinia zerumbet (Pers.) B. L. Burtt. et R. M. Sm. cultivated in Okinawa Island was investigated by GC-MS anal. The seasonal variation of the main volatile constituents was also investigated. Anal. of the essential oil identified 17 compds. It showed the predominant presence of monoterpenic constituents, representing 95% of the essential oil. p-Cymene was the most abundant compd., followed by 1,8-cineole, terpinen-4-ol, alpha-pinene, beta-pinene and limonene. The amt. of sesqiterpenic content of the essential oil was small, mostly represented by beta-caryophyllene and alpha-caryophyllene. One of the phenylpropanoid derivs., Me cinnamate, was also detected. The essential oils from the leaves collected at ten different collection periods for over 5 years showed significant differences in their compns. p-Cymene, terpinen-4-ol and 1,8-cineole were the most predominant constituents over the periods with a few exceptions. The content rates of p-cymene were abundant in summer, still high in late autumn and early winter, and decreased in mid-winter and early spring. In contrast, the contents of terpinen-4-ol and 1,8-cineole were high in winter, but decreased around summer. On enantiomeric distribution, terpinen-4-ol and alpha-pinene were suggested to relate to seasonal transformation. (+)-Terpinen-4-ol had a tendency to decrease in high temps. and huge pptns. It was also suggested that (-)-alpha-pinene was more sensitive to climate change than (+)-alpha-pinene.
文献番号	19067113