Inhibition of Listeria monocytogenes by Sodium Diacetate and Sodium Lactate on Wieners and Cooked Bratwurst
| Autor: | Jane Mattias, Smith Al, Margaret Hardin, Kathleen A. Glass, Kevin Ladwig, Ann Marie McNAMARA, Dawn A. Granberg, Eric A. Johnson |
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| Rok vydání: | 2002 |
| Předmět: |
Preservative
Time Factors Food Handling Swine Colony Count Microbial Food Contamination Acetates medicine.disease_cause Microbiology Sodium Lactate chemistry.chemical_compound Listeria monocytogenes Sodium diacetate Sodium lactate medicine Animals Humans Food microbiology Food science Antibacterial agent Chemistry fungi Temperature Antimicrobial Lactic acid Meat Products Consumer Product Safety Food Microbiology Cattle Disinfectants Food Science |
| Zdroj: | Journal of Food Protection. 65:116-123 |
| ISSN: | 0362-028X |
| DOI: | 10.4315/0362-028x-65.1.116 |
| Popis: | The inhibition of Listeria monocytogenes by sodium lactate and sodium diacetate was evaluated for wieners containing pork, turkey, and beef and for cooked bratwurst containing beef and pork. Both products were supplied by commercial manufacturers. Treated products were surface-inoculated with 10(5) CFU of L. monocytogenes per package and vacuum-packed in gas-impermeable pouches. Wieners were stored for 60 days at 4.5 degrees C, and bratwurst were stored for 84 days at 3 and 7degrees C. A surface treatment that consisted of dipping wieners into solutions containingor = 6% lactate andor = 3% diacetate for 5 s did not delay pathogen growth compared with that for untreated wieners. In additional trials, the antilisterial activity of lactate and diacetate in wiener and bratwurst formulations was evaluated. Lactate levels ranged from 1.32 to 3.4%, and diacetate was evaluated at 0.1 and 0.25%. The growth of L. monocytogenes was delayed for 4 and 12 weeks at 7 and 3 degrees C, respectively, on uncured, unsmoked bratwurst formulated with 3.4% lactate/0.1% diacetate, compared with 1 and 2 weeks, respectively, for the formulation containing 2% lactate. L. monocytogenes grew byor = 1 log unit after 4 weeks' storage at 3 or 7 degrees C on cured, smoked bratwurst without lactate or diacetate, but growth was inhibited for 12 weeks on cured, smoked bratwurst formulated with 3.4% lactate and 0.1% diacetate. Sodium lactate levels ofor = 3% and combinations ofor = 1% lactate plusor = 0.1% diacetate prevented listerial growth on wieners stored for 60 days at 4.5 degrees C. These results indicate that dipping wieners in lactate-diacetate solutions is not an efficient way to apply these antimicrobial agents to wieners. However, the inclusion of combinations of sodium lactate and sodium diacetate in wiener or bratwurst formulations inhibits the growth of L monocytogenes ator = 7 degrees C, and an additional margin of safety was observed for products that are cured and smoked. |
| Databáze: | OpenAIRE |
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