We screened and analyzed the volatile constituents contained in commercial cold syrups, using HandyTD TD 265 and a simplified enrichment-tool MonoTrap RGC18 TD. Heatspace gas was collected by MonoTrap and then heat-introduced by HandyTD and analyzed by GC/FID/O as well as GC/MS. We also analyzed a sample of cold syrup supplemented with 2 and 6-Dichlorophenol, assuming a situation in which an offensive odor is present from cold syrup. (Sample concentration: 1 mg/L)
In the event of odor-related problems such as an offensive odor claim, it is necessary to identify the compounds that caused the offensive odor. Most of the "odor" compounds that reach the nose are highly volatile compounds, so gas chromatographs are used as analytical instruments. However, such trace amounts of compounds that cannot be detected by gas chromatographs may be key components of the off-flavor, or the intensity balance between the chromatogram's peak intensity and odor may be different. Sensory assessment is also a very effective tool for filling the gap between the analyzer and the human nose.