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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Aroma characteristics of stored tobacco cut leaves analyzed by a high vacuum distillation and canister system.
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Aroma characteristics of stored tobacco cut leaves analyzed by a high vacuum distillation and canister system.

机译：通过高真空蒸馏和罐系统分析了储存的烟草切丝的香气特性。

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摘要

An extraction method using a high vacuum distillation extraction apparatus coupled to a canister was newly developed for the analysis and sensory test of tobacco leaf volatiles. We extended the application of the canister that is used in environmental analysis, to the extraction of the aroma components in tobacco leaves. The volatile components with vapor pressures higher than 0.1 mmHg were easily evaporated under decompression and then trapped into the vacuumed canister. After the collection of volatiles, the canister was pressurized by a slow stream of inert gas in order to emit the whole aroma under a controlled flow. Applying a preconcentrator-gas chromatography/mass spectrometry (GC/MS) and sensory test to the headspace gas components, the aroma alteration between 0 and 2 weeks of storage was simultaneously or individually evaluated. As a result, after the storage, alcohols such as 1-hexanol, linalool, and benzyl alcohol decreased significantly. The amount of carotenoid derivatives that have the characteristic tobacco leaf aroma had not changed. Sensory evaluation of the same headspace gas with that used for GC/MS demonstrated the alternation of the aroma quality before and after storage. The main changes were the decrease of greenness and smoothness in aroma and the decrease of ethylbenzene, 2-pentylfuran, 1-hexanol, benzaldehyde, and linalool concentrations.
机译：新开发了一种使用高真空蒸馏萃取装置与滤罐相结合的萃取方法，用于烟叶挥发物的分析和感官测试。我们将环境分析中使用的碳罐的应用范围扩展到了烟叶中香气成分的提取。蒸气压高于0.1 mmHg的挥发性组分在减压下很容易蒸发，然后捕集到真空罐中。收集完挥发物后，用缓慢的惰性气体对罐加压，以便在可控流量下散发出全部香气。将预浓缩器气相色谱/质谱（GC / MS）和感官测试应用于顶空气体成分，可同时或分别评估存储0到2周之间的香气变化。结果，在储存之后，诸如1-己醇，芳樟醇和苄醇的醇显着降低。具有特征性烟叶香气的类胡萝卜素衍生物的量没有改变。与GC / MS所用的相同顶空气体的感官评估表明，储存前后香气质量发生了变化。主要变化是香气的绿色度和光滑度下降，乙苯，2-戊基呋喃，1-己醇，苯甲醛和芳樟醇浓度下降。

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