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Poster Presentations
Day 3, June 24（Tue.）
Room P (Maesato East, Foyer, Ocean Wing)
- 3P-PM-13
Ambient Pressure Laser Desorption Ionization/Post-photoionization Mass Spectrometry Imaging to Study the Permeation Process of Flavors and Fragrances in Tobacco Leaves
(NSRL, USTC)
oChunchun Lv, Chengyuan Liu, Yang Pan
Laser-based high-resolution mass spectrometry imaging at ambient conditions is utilized to study the permeation process of flavors and fragrances in tobacco leaves. Here, laser desorption ionization combined with a compact post-photoionization (LDI/PI) assembly with a krypton discharge lamp was used to obtain the high-resolution imaging of the blade profile of cured tobacco leaves [1,2]. Moreover, the penetration process of a single flavoring agents in the tobacco leaves was studied by mass spectrometry imaging, which was used to simulate the addition of flavors and ingredients during the production process of tobacco. The factors affecting the permeation efficiency of flavors and fragrances were also explored, such as permeation time, permeation temperature, osmotic humidity and other conditions [3]. As the penetration time increases, the penetration of flavors and fragrances molecules in the cured tobacco leaves becomes deeper. With the increase of humidity and temperature, the penetration speed of flavors and fragrances molecules in the cured tobacco leaves becomes faster. In addition, the structure of the back of the cured tobacco leaves was photographed by Scanning Electron Microscope, and the phenomenon of glandular hair breakage was found. It is estimated that the glandular hairs are more likely to break when the temperature and humidity are higher, and it is speculated that the breakage of the glandular hairs may be one of the reasons affecting the permeability efficiency of flavors and fragrances.