白柳ネーブル果皮精油の香気成分の分析

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  • Volatile compounds in peel oil of Shiroyanagi navel.
  • シロヤナギ ネーブル カヒ セイユ ノ コウキ セイブン ノ ブンセキ

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The essential oil of Shiroyanagi navel (Citrus sinensis OSBECK, cv. SHIROYANAGI) was prepared from the peel by simultaneous distillation-extraction, and separated into fractions of hydrocarbon and oxygenated compound through a silicagel column. Both fractions were analyzed by combined capillary gas chromatograph-mass spectrometer (GC/MS). Sixty-eight compounds, including 9 hydrocarbons, 20 alcohols, 20 aldehydes, 9 esters, 2 phenols, 4 ethers, and 4 ketones, were identified by GC/MS and Kovats Indices. As the oxygenated fraction had the characteristic aroma of the oil, this fraction was further separated into four fractions, and then examined by GC/MS and GC-sniffing. The compositional characteristic of this essential oil was a predominant large amount of terpene aldehydes compared with peel oils of other sweet oranges in Japan.

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