Abstract
Pork fat was heated at 160~170°C for 3 hr under bubbling with air, and the volatile acidic compounds were extracted with 3 % aqueous sodium carbonate solution from the total volatile compounds collected during heating. Gas chromatographic identification of the acidic compounds was carried out on PEG-20M and Apiezon L columns. Some of the isolated compounds were identified by infrared and mass spectrometry. The compounds identified include; saturated acids, trans-2, trans-3, cis-3 alkenoic acids, hydroxy acids, keto acids, and dicarboxylic acids. Each of the unsaturated acid and γ-keto acid might be one of the precursors of γ- and δ-lactones reported previously.
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