光学学报, 2015, 35 (3): 0330001, 网络出版: 2015-02-12  

基于顶空-SERS技术的不同产地、不同药源的薤白挥发物研究

Research on Volatiles of Bulbus Allii Macrostemonis from Different Areas and Different Original Plants Based on Headspace and SERS
作者单位
1 云南师范大学物理与电子信息学院, 云南 昆明 650500
2 楚雄师范学院云南省高校分子光谱重点实验室, 云南 楚雄 675000
摘要
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。
Abstract
The volatiles of Bulbus Allii Macrostemonis from different areas and different original plants have been studied by headspace combined with surface- enhanced Raman scattering (SERS) using nano- silver colloid as substrate. Volatile SERS spectra of Allium macrostemon Bunge from four different areas and Allium chinense from Chuxiong are very similar and well repeated. The peaks at 375, 635, 673, 712, 781, 893, 1025, 1086, 1222, 1322, 1629 cm-1 in their volatile SERS spectra match well with each other. The volatile SERS spectra are compared respectively with the volatile SERS spectra of liquid allyl methyl sulfide, 1- propanethiol and their mixture. The results show that the volatile SERS spectra of Allium macrostemon Bunge and Allium chinense are basically consistent with that of the mixture of liquid allyl methyl sulfide and 1- propanethiol. It illustrates that volatiles of Allium macrostemon Bunge from different areas and Allium chinense from Chuxiong contain allyl methyl sulfide and 1- propanethiol. All results have revealed that the headspace combining with SERS technology can be directly used to study volatiles of Bulbus Allii Macrostemonis.
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张川云, 司民真, 李伦, 张德清. 基于顶空-SERS技术的不同产地、不同药源的薤白挥发物研究[J]. 光学学报, 2015, 35(3): 0330001. Zhang Chuanyun, Si Minzhen, Li Lun, Zhang Deqing. Research on Volatiles of Bulbus Allii Macrostemonis from Different Areas and Different Original Plants Based on Headspace and SERS[J]. Acta Optica Sinica, 2015, 35(3): 0330001.

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