A quality control procedure for the gas liquid chromatographic evaluation of the flavor quality of vegetable oils

Abstract and Summary An objective procedure which is relatively simple and rapid is under study for the determination of the flavor quality of vegetable oils. This procedure utilizes the direct injection of an oil sample to which has been added an internal standard, into a packed precolumn of a gas Chromatograph. The volatiles are swept from the precolumn through a 10% SE‐30 column under operating parameters which permit complete elution of all volatiles and internal standard within 20 min. Some 1 5 to 20 samples can be evaluated in one day before it is necessary to replace any part of the foot‐long precolumn. Evaluations have been made by the gas liquid Chromatographic (GLC) procedure and by a flavor panel of oil samples subjected to a variety of storage conditions. Generally, differences in the GLC pattern are reflected in the flavor panel results.