Lactic acid concentration as an indicator of acceptability in refrigerated or freeze-thawed ground beef |
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| Authors: | P S Nassos A D King A E Stafford |
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| Affiliation: | Western Regional Research Center, United States Department of Agriculture, Berkeley, California 94710. |
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| Abstract: | Lactic acid concentrations increased in refrigerated and freeze-thawed anaerobically stored ground beef. Bacterial counts were higher in refrigerated samples, but the ratios of gram-positive bacteria in refrigerated and freeze-thawed samples were the same. No differences in appearance or odor between refrigerated and freeze-thawed samples were noted after 2 days of aerobic storage. Initial lactic acid concentration can be used to predict the shelf life of frozen beef. |
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