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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Direct thermal desorption-gas chromatography and gas chromatography-mass spectrometry profiling of hop (Humulus lupulus L.) essential oils in support of varietal characterization.
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Direct thermal desorption-gas chromatography and gas chromatography-mass spectrometry profiling of hop (Humulus lupulus L.) essential oils in support of varietal characterization.

机译：蛇麻草（Humulus lupulus L.）精油的直接热脱附-气相色谱法和气相色谱-质谱联用分析，以支持品种鉴定。

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摘要

The use of direct thermal desorption-gas chromatography-mass spectrometry (DTD-GC-MS) and DTD-GC-flame ionization detection (DTD-GC-FID) for characterization of hop essential oils is described. Four hop varieties (Nugget, Galena, Willamette, and Cluster) from the Yakima valley (Yakima, WA) 1998 harvest were analyzed by DTD-GC-MS and DTD-GC-FID methodology. Approximately 1 g of hops was needed for the analysis. Hop samples were prepared for GC-MS and/or GC-FID profiling in approximately 20 min. More than 100 volatile compounds have been identified and quantified for each hop variety. The results were found to be in good agreement with conventional steam distillation-extraction (SDE) data. A calibration curve for determination of essential oil content in hops by DTD-GC-FID has been generated. Quantitation of hop oil content by DTD-GC-FID was shown to be in good agreement with conventional SDE data. The recovery of key oil components valuable for varietal identification was demonstrated to be highly reproducible and characteristic of each variety analyzed when DTD-GC-FID was used for analysis.
机译：描述了使用直接热脱附-气相色谱-质谱（DTD-GC-MS）和DTD-GC-火焰电离检测（DTD-GC-FID）来表征啤酒花香精油。使用DTD-GC-MS和DTD-GC-FID方法分析了1998年亚基马河谷（华盛顿州亚基马）的四个啤酒花品种（金块，方铅矿，威拉米特和簇）。分析大约需要1 g啤酒花。啤酒花样品准备在大约20分钟内用于GC-MS和/或GC-FID分析。对于每种啤酒花品种，已经鉴定并定量了100多种挥发性化合物。发现结果与常规蒸汽蒸馏-萃取（SDE）数据非常吻合。已生成用于通过DTD-GC-FID测定啤酒花中精油含量的校准曲线。通过DTD-GC-FID对啤酒花油含量进行定量分析表明与常规SDE数据吻合良好。当使用DTD-GC-FID进行分析时，对油品鉴定有价值的关键油成分的回收被证明具有很高的重现性，并且分析了每个品种的特征。

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