Abstract

The volatile compounds in Rosa rugosa ‘Zi Zhi’, R. rugosa ‘Feng Hua’, and R. cv ‘Crimson Glory’ from three regions were determined by two-dimensional gas chromatography with quadrupole time-of-flight mass spectrometry coupled with knitting aromatic polymer – polydopamine (KAP@PDA) solid-phase microextraction. 82 compounds were identified by peak matching and retention indices, and R. cv ‘Crimson Glory’ contained the most volatile components. D-Limonene (up to 5131 μg kg⁻¹), benzyl alcohol (up to 16,510 μg kg⁻¹), benzeneacetaldehyde (up to 13,820 μg kg⁻¹), phenylethyl alcohol (up to 49,020 μg kg⁻¹) and citronellol (up to 7129 μg kg⁻¹) were the major constituents in all R. rugosa species. In addition, benzaldehyde was highly abundant in R. cv ‘Crimson Glory’ (up to 23,130 μg kg⁻¹). The primary volatile components responsible for the differences among the three R. rugosa cultivars and regions were distinguished by orthogonal partial least-squares discriminant analysis. The results suggested that phenylethyl alcohol contributed the most in distinguishing aroma quality for R. rugosa cultivars and those from different regions.

摘要

采用二维气相色谱-四极杆飞行时间质谱联用针织法测定三个区域的蔷薇'紫芝'、蔷薇'风华'和R. cv'Crimson Glory'中的挥发性化合物芳香族聚合物——聚多巴胺（KAP@PDA）固相微萃取。通过峰匹配和保留指数鉴定了 82 种化合物，其中R. cv 'Crimson Glory' 含有最易挥发的成分。D-柠檬烯（最高 5131 μg kg ^-1）、苯甲醇（最高 16,510 μg kg ^-1）、苯乙醛（最高 13,820 μg kg ^-1）、苯乙醇（最高 49,020 μg kg ^-1）和香茅醇（高达 7129 微克/公斤^-1 ) 是所有R. rugosa物种的主要成分。此外，苯甲醛在R. cv 'Crimson Glory' 中含量非常丰富（高达 23,130 μg kg ^-1）。通过正交偏最小二乘判别分析区分了导致三个R. rugosa品种和地区之间差异的主要挥发性成分。结果表明，苯乙醇对区分R. rugosa品种和不同地区的香气品质的贡献最大。