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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.

analytical letters

Determination of Volatiles in  Rosa Rugosa  by Knitting Aromatic Polymer – Polydopamine (KAP@PDA) Solid-Phase Microextraction (SPME) and Multidimensional Gas Chromatography – Mass Spectrometry (MDGC-MS)