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将顶空技术与表面增强拉曼散射(SERS)技术结合,以纳米银溶胶作为基底获得了不同产地、不同药源的薤白挥发物的SERS光谱。实验表明不同产地的小根蒜挥发物SERS谱及藠头挥发物SERS谱的峰位峰形非常相似,且重复性好。所检测的植物样品挥发物的SERS谱在375、635、673、712、781、893、1025、1086、1222、1322、1629 cm-1附近的峰对应较好。与液态烯丙基甲基硫醚、1-丙硫醇及二者混合后的挥发物SERS谱进行比对,结果显示,小根蒜和藠头挥发物的SERS谱与液态烯丙基甲基硫醚和1-丙硫醇混合后的挥发物SERS谱基本一致;说明不同产地的小根蒜和楚雄地区藠头的挥发物中都含有烯丙基甲基硫醚和1-丙硫醇成分。说明顶空技术与SERS技术结合可直接用于新鲜薤白的挥发物研究。
Combining headspace technology with surface enhanced Raman scattering (SERS) techniques, SERS spectra of volatile compounds from different sources and sources were obtained using nano-silver sol as a substrate. The experimental results show that the SERS spectra of Scutellaria barbata volatiles from different regions and the SERS spectrum of Squalane volatiles are very similar and reproducible. The SERS spectrum of the volatiles of the tested plant samples corresponded better at the peaks around 375, 635, 673, 712, 781, 893, 1025, 1086, 1222, 1322 and 1629 cm-1. The results showed that the SERS spectra of volatile compounds from liquid allyl methyl sulfide, 1-propanethiol, The SERS spectra of volatile compounds after the mixture of thioether and 1-propanethiol were basically the same. The results showed that the volatile components of small rooted garlic and Chuxiong region in different areas contained allyl methyl sulfide and 1-propanethiol . Description Headspace technology combined with SERS technology can be used directly for the research of volatile compounds.