Ground pork (30% fat) was packaged in,vacuum bags (V), polyvinyl chloride film (P\. Saran Wrao"M. aluminum foil (A\. or Saran"-.,I aluminum foil combination (S'A) g& frozen at -17"d f& 13, 26, and 39 wk. Samples were analyzed for TBA value and PH. Volatiles were steam distilled, volatilized at 6O"C, and 1 mL samples of headspace gas was analyzed using gas chromatography and mass spectrometry. Spectra for individual peaks on the total ion chromatograms were identified with spectra from known standards. Ground pork (cooked to 75°C) was evaluated by a trained sensory panel for flavor and texture. Rancid and acid odor and flavor scores and TBA values increased over time regardless of packaging treatment; however, Vpackaged pork had lower scores and P-packaged had higher scores at all time periods than did that in other materials. Eighteen volatiles were identified and quantified using GC/MS; 3-hydroxy-2-butanone had the highest correlation coefficients with TBA value, odor, and flavor scores.