不同产地大马士革玫瑰精油特征成分的气相离子迁移谱对比分析

Gas chromatography-ion mobility spectroscopy comparative analysis of characteristic components of rose essential oil from Damascene cultivated in different areas

中文关键词:  大马士革玫瑰精油, 挥发性香成分, 气相离子迁移谱

英文关键词:Damascene rose essential oil  volatile flavor compounds  gas chromatography-ion mobility spectroscopy

中文摘要:

      目的 分析平阴产大马士革玫瑰精油与保加利亚产大马士革玫瑰精油挥发性香成分, 确定2者的特征性成分。方法 利用气相离子迁移谱(gas chromatography-ion mobility spectroscopy, GC-IMS)分析技术对不同产地玫瑰精油进行对比分析。结果 两种不同玫瑰精油样品经GC-IMS技术分析可定性出,挥发性物质为54种单体及部分物质的二聚体, 单体主要包括醇类、酯、酮类、醛类、烯烃类、酸类以及醚类。2个品种的玫瑰精油所含挥发性香成分在种类及含量上存在差异, 且每种玫瑰品种精油都有其区别于其他品种的特征性指纹风味化合物。其中1,8-桉叶素(二聚物)、羟基丙酮、2,3-丁二醇、糠醛(二聚物)、3-戊酮、α-松油醇、1-丙醇、玫瑰醚、戊醛、α-苯甲醇、E,E-2,4-庚二烯醛、反-2-己烯醇、己醛、乳酸乙酯、2-苯乙醇、乙醛缩二乙醇等成分的有无及含量高低可作为区分DMSGI与DMSGII的参考依据。结论 通过GC-IMS分析技术, 可确定区分平阴产大马士革玫瑰精油与保加利亚产大马士革玫瑰精油的特征挥发性成分, 可作为鉴别2者的依据。

英文摘要:

      Objective To analyze the volatile fragrance components of Damascus rose essential oil from pingyin and Bulgaria, and to determine the characteristic components of them. Methods Gas chromatography-ion mobility spectroscopy (GC-IMS) was used to analyze their flavor compounds. Results The diversities between different products were explored according to the characteristic flavor fingerprints of volatile components and principal component analysis. The results in this paper showed that 54 volatile compounds were identified as the common volatile substances of 2 different rese essential oil samples including some dimers of flavor compounds. These volatile compounds mainly consisted of alcohols, esters, ketones, aldehydes, olefins, acid and ethers. There were differences in the types and contents of volatile aroma components in rose essential oil of 2 varieties, and each rose essential oil had its characteristic fingerprint flavor compounds which were different from other varieties. Among them, the presence and content of 16 characteristic substances could be used as the reference for distinguishing DMSGI and DMSGII, such as 1.8-cineole (dimer), 1-hydroxy-2-propanone, 2,3-butanediol, furfural (dimer), 3-pentanone, alpha-terpineol, 1-propanol, rose oxide, 1-propanol, alpha-methyl benzenemethanol, E,E-2,4-heptadienal, 2-hexen-1-ol, hexanal, ethyl lactate, 2-phenylethanol, 1,1-diethoxyethane, etc. Conclusion GC-IMS analysis technology can be used to distinguish the characteristic volatile components of the Damascus rose essential oil from Pingyin and Bulgaria, which can be used as the basis for the identification of them.