ABSTRACT The chemical compositions of the essential oils obtained by hydrodistillation from aerial parts of five subspecies of Scutellaria orientalis L. (subsp. carica, subsp. haussknechtii, subsp. macrostegia, subsp. orientalis and subsp. santolinoides) were analyzed by gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS), simultaneously. According to essential oil analysis in five subspecies of S. orientalis, germacrene D (57.2%), bicyclogermacrene (7.4%) and β-caryophyllene (5.2%) in subsp. carica; germacrene D (23.5%), β-caryophyllene (14.2%), bicyclogermacrene (9.0%) and caryophyllene oxide (8.1%) in subsp. haussknechtii; germacrene D (47.8%), β-caryophyllene (16.3%) and bicyclogermacrene (12.0%) in subsp. macrostegia; caryophyllene oxide (23.5%), germacrene D (20.1%) and β-caryophyllene (14.5%) in subsp. orientalis; germacrene D (42.1%), β-caryophyllene (13.7%) and bicyclogermacrene (11.3%) in subsp. santolinoides were determined as major components. To the best of our knowledge, this is the first report on the chemical composition of the essential oil of four subspecies of S. orientalis.

中文翻译：

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土耳其黄芩五个亚种精油的成分

摘要 通过气相色谱法 (GC) 分析了黄芩五个亚种（黄芩亚种、haussknechtii 亚种、macrostegia 亚种、东方亚种和 santolinoides 亚种）的地上部分通过水蒸馏获得的精油的化学成分。 -FID) 和气相色谱-质谱 (GC-MS)，同时进行。根据 S. orientalis 五个亚种的精油分析，亚种中的锗烯 D (57.2%)、双环锗烯 (7.4%) 和 β-石竹烯 (5.2%)。卡里卡; 亚种中的锗烯 D (23.5%)、β-石竹烯 (14.2%)、双环锗烯 (9.0%) 和氧化石竹烯 (8.1%)。haussknechtii; 亚种中的锗烯 D (47.8%)、β-石竹烯 (16.3%) 和双环锗烯 (12.0%)。巨骨症; 亚种中的石竹烯氧化物 (23.5%)、锗烯 D (20.1%) 和 β-石竹烯 (14.5%)。东方人; 亚种中的锗烯 D (42.1%)、β-石竹烯 (13.7%) 和双环锗烯 (11.3%)。santolinoides 被确定为主要成分。据我们所知，这是关于东方香柏四个亚种精油化学成分的第一份报告。