Reduction of Bacterial Populations on Vacuum-Packaged Ground Beef Patties with Fumaric and Lactic Acids

The effects of fumaric and lactic acid on the total numbers of aerobic, psychrotrophic, and coliform bacteria on vacuum-packaged ground beef patties at 0, 1, 3, 5, 7, 10, and 14 days of storage at 4°C were studied. Fumaric acid treatments resulted in greater reductions in microbial growth than lacti...

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Bibliographic Details
Published in:Journal of food protection 1996-10, Vol.59 (10), p.1037-1040
Main Authors: Podolak, R K, Zayas, J F, Kastner, C L, Fung, D Y C
Format: Article
Language:English
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Summary:The effects of fumaric and lactic acid on the total numbers of aerobic, psychrotrophic, and coliform bacteria on vacuum-packaged ground beef patties at 0, 1, 3, 5, 7, 10, and 14 days of storage at 4°C were studied. Fumaric acid treatments resulted in greater reductions in microbial growth than lactic acid treatments. When 5.0% fumaric acid was used, the lag phase was prolonged and microbial growth was reduced ( < 0.05), with total aerobic, psychotrotrophic, and coliform populations reaching net maximum growths of only 1.46, 1.44, and 0.98 log units, respectively, after storage at 4°C for 10 days. Increasing the acid concentrations significantly decreased the growth of all microorganisms. The 5.0% lactic acid was the most inhibitory against coliforms, resulting in a 3.88-1og unit reduction after 10 days of storage.
ISSN:0362-028X
1944-9097
DOI:10.4315/0362-028X-59.10.1037