【摘要】 采用顶空、needle trap动态捕集针（NTD）、顶空-固相微萃取（HS-SPME）结合气相色谱-质谱法（GC-MS）对白玉兰鲜花挥发性成分进行检测。共鉴定出挥发性成分127个，其中醇类16个、酯类31个、酸类17个、烃类39个、醛类10个、其他类14个。与HS相比，NTD和HS-SPME均能有效吸附少量挥发物，但二者在特定组分的定性和定量方面存在较大差异。PCA结果显示HS-SPME结合GC-MS更适用于白玉兰鲜花挥发物的分析，其中30μm PDMS综合得分最高，能反应更全面的样品信息，但其对于重要挥发物2-甲基丁酸甲酯的吸附较差。更多还原

【Abstract】 Headspace(HS), needle trap dynamic adsorption(NTD), and headspace-solid phase microextraction(HS-SPME)combined with gas chromatography-mass spectrometry(GC-MS) to detect the volatile components of Magnolia denudata flowers. A total of 127 volatile components were identified, including 16 alcohols, 31 esters, 17 acids, 39 hydrocarbons, 10aldehydes, and 14 other compounds. Compared with HS, both NTD and HS-SPME were effective in adsorbing trace volatile compounds, but they also exhibited significant differences in the qualitative and quantitative analyses of specific components.The PCA results indicated that the HS-SPME combined with GC-MS was more suitable for the analyse of the volatile compounds in Magnolia denudata flowers. Among them, the 30 μm PDMS showed the highest comprehensive score,reflecting more comprehensive sample information, but it exhibited poor adsorption of the important volatile compound,methyl 2-methylbutanoate.更多还原