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|標題:||The essential oil of Glossogyne tenuifolia||作者:||Chyau, C.C.
|關鍵字:||Glossogyne tenuifolia (Compositae);essential oil;GC-MS;identification;aroma||Project:||Food Chemistry||期刊/報告no：:||Food Chemistry, Volume 100, Issue 2, Page(s) 808-812.||摘要:||
Glossogyne tenuifolia (Labill) Cass. (Compositae) is a traditional anti-pyretic and hepatoprotective herb in The Pescadores Islands. The essential oil of the dried herb, from four seasons, was isolated using a simultaneous steam-distillation and solvent-extraction (SDE) apparatus. The essential oil contents were in the range of 0.48-0.77 mg g(-1), with an average of 0.66 mg g(-1), and declined with the seasons. Generally, the essential oils from four seasons exhibited similar volatile profiles. A total of 62 different compounds were isolated by the SDE method and, among them, 30 compounds were identified, including 13 terpenes, 16 oxygen-containing compounds (eight alcohols, five aldehydes, one ester and two ketones) and one other compound. Terpenes were predominantly present in the essential oil and accounted for 61.3-76.0% of the essential oil with an average of 69.1%. The second most abundant class was alcohols, accounting for 12.4-15.9% of the essential oil, with an average of 14.1%. Consistently for four seasons, the most abundant eight compounds were in the descending order: p-eymene > 0-pinene > 0-phellandrene > limonene > cryptone > alpha-pinene > 4-terpineol + gamma-muurolene. However, these eight compounds accounted for 71.5% of the average of the essential oil and, in combination, might give rise to the overall citrus-like aroma of the G. tenuifolia. (c) 2005 Elsevier Ltd. All rights reserved.
|Appears in Collections:||食品暨應用生物科技學系|
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