Determination of 12 flavonoids in tobacco leaves using ultra-high performance liquid chromatography- tandem mass spectrometry

doi:10.3724/SP.J.1123.2015.03001

Abstract

Abstract:

Flavonoids are very important secondary metabolites for tobacco plants. They are also considered as important flavor precursors for cigarettes. A method of ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established for the simultaneous determination of 12 flavonoids in tobacco leaves. The developed method determined 10 more flavonoids compared to the traditional method. A solution of methanol-water-chloroform (5 : 2 : 2, v/v/v) was used to extract the flavonoids from tobacco leaves and remove the pigment. Instrument analysis using the UPLC-MS/MS was completed in 13 min. The method validation was performed, and the results showed that the linear correlation coefficients (r²) of all the 12 flavonoids were more than 0.99. The limits of detection and the limits of quantification were in the range of 0.3-100 μg/L and 1.2-400 μg/L, respectively. Intra-day and Inter-day reproducibilities were in the range of 3.5%-7.4% and 5.2%-11.4%, respectively. The recoveries were 81.2%-111.9%. The established method was successfully used to analyze the flavonoids of tobacco leaves of 11 varieties. Significant concentration differences of the flavonoids were found among the determined varieties. Furthermore, significant positive correlation among the flavonoids with similar chemical structures (aglycones and their related glycosides, glycosides with the same aglycone, and similar aglycones) was found using the acquired data.

Key words: flavonoids, tobacco, ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS)

CLC Number:

O658

LI Yong, LIN Qian, PANG Tao, SHI Junli. Determination of 12 flavonoids in tobacco leaves using ultra-high performance liquid chromatography- tandem mass spectrometry[J]. Chinese Journal of Chromatography, 2015, 33(7): 746-752.

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