Abstract
This application note describes the direct thermal desorption of desirable and undesirable aroma compounds from edible oils. The oil sample is placed in a microvial from where it is directly heated using a GERSTEL Thermal Desorption Unit (TDU). Volatile compounds are transferred to the GC/MS system while leaving non-volatile oil matrix behind, preventing contamination of the GC inlet and column. Different microvial designs were evaluated and those with a slit positioned 1 cm from the bottom of the microvial were found to provide the best analyte transfer.
Keywords
MPS LabWorks Platform, Aroma analysis, Off-flavor, Edible Oil, Direct Thermal Desorption, Thermal Extraction, Microvial, GC/MS