Abstract This study was aimed to explore the composition and diurnal variation analyses of floral scent emission from Rosa rugosa Thunb. and Tulipa gesneriana L. The floral scent from the fresh flower were collected at different time points (9:00, 12:00, 15:00, 18:00, and 21:00) using dynamic headspace collection and were analyzed using autothermal desorber-gas chromatography/mass spectrometry (ATD-GC/MS). The results showed that a total of 62 volatile flavor compounds were detected from Rosa rugosa Thunb and a total of 70 volatile flavor compounds were detected from Tulipa gesneriana L. They were identified with eight functional categories: alcohols, fatty hydrocarbons, terpenes, aldehydes, ketones, esters, and other substances. The total release amount first decreased, and then increased with time, and arrived at the lowest at 15:00. The release amounts of different categories present distinct change patterns. Among the components, phenylethyl alcohol, citronellol, methylene chloride, hexane, and acetone showed relatively higher release amounts and were thought as the main components in floral scent of Rosa rugosa Thunb. Alpha-Farnesene, ethanol, pentadecane, beta-ocimene, longifolene, caryophyllene, and acetone showed relatively higher release amounts and were thought as the main components in floral scent of Tulipa gesneriana L. Research of roses and tulips in aromatic in the garden provides a theoretical basis and research and improvement of the aroma components of aroma.

中文翻译：

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Rosa rugosa Thunb 花香释放的组成和日变化。和郁金香 gesneriana L。

摘要 本研究旨在探讨蔷薇花香散发的成分和日变化分析。和郁金香。使用动态顶空收集在不同时间点（9:00、12:00、15:00、18:00 和 21:00）收集鲜花的花香，并使用自热解吸器进行分析- 气相色谱/质谱 (ATD-GC/MS)。结果表明，从蔷薇中检出62种挥发性风味化合物，从郁金香中检出70种挥发性风味化合物，鉴定为醇类、脂肪烃类、萜类、醛类、酮类8个功能类别。 、酯类和其他物质。总释放量随时间先减少后增加，在15:00达到最低。不同类别的释放量呈现不同的变化模式。其中苯乙醇、香茅醇、二氯甲烷、己烷和丙酮的释放量相对较高，被认为是刺槐花香的主要成分。α-法呢烯、乙醇、十五烷、β-罗勒烯、长叶烯、石竹烯和丙酮的释放量相对较高，被认为是郁金香花香的主要成分。 花园中芳香玫瑰和郁金香的研究提供了香气成分的理论基础和研究与改进。和丙酮表现出相对较高的释放量，被认为是蔷薇花香的主要成分。α-法呢烯、乙醇、十五烷、β-罗勒烯、长叶烯、石竹烯和丙酮的释放量相对较高，被认为是郁金香花香的主要成分。 花园中芳香玫瑰和郁金香的研究提供了香气成分的理论基础和研究与改进。和丙酮表现出相对较高的释放量，被认为是蔷薇花香的主要成分。α-法呢烯、乙醇、十五烷、β-罗勒烯、长叶烯、石竹烯和丙酮的释放量相对较高，被认为是郁金香花香的主要成分。 花园中芳香玫瑰和郁金香的研究提供了香气成分的理论基础和研究与改进。