Effects of low NaNO2 and NaCl concentrations on Listeria monocytogenes growth in emulsion-type sausage
| Autor: | Soomin Lee, Beom-Young Park, Yohan Yoon, Mi-Hwa Oh, Sejeong Kim, Heeyoung Lee, Kyoung-Hee Choi, Jimyeong Ha, Eunji Gwak, Jeeyeon Lee |
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| Rok vydání: | 2016 |
| Předmět: |
Listeria monocytogenes
NaNO2 NaCl Growth Pattern Emulsion-typeSausage Chemistry Gompertz function 0402 animal and dairy science 04 agricultural and veterinary sciences medicine.disease_cause 040401 food science 040201 dairy & animal science Phase duration 0404 agricultural biotechnology Emulsion medicine Animal Science and Zoology Food science Growth rate Volume concentration Food Science |
| Zdroj: | ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES(30): 3 |
| ISSN: | 1976-5517 1011-2367 |
| DOI: | 10.5713/ajas.16.0391 |
| Popis: | Objective: The objective of this study was to evaluate the effect of combinations of NaNO2 and NaCl concentrations on Listeria monocytogenes (L. monocytogenes) growth in emulsion-type sausage. Methods: Emulsion-type sausages formulated with different combinations of NaNO2 (0 and 10 ppm) and NaCl (1.00%, 1.25%, and 1.50%) were inoculated with a five-strain L. monocytogenes mixture, and stored at 4 degrees C, 10 degrees C, and 15 degrees C, under aerobic or vacuum conditions. L. monocytogenes cell counts were measured at appropriate intervals, and kinetic parameters such as growth rate and lag phase duration (LPD) were calculated using the modified Gompertz model. Results: Growth rates increased (0.004 to 0.079 Log colony-forming unit [CFU]/g/h) as storage temperature increased, but LPD decreased (445.11 to 8.35 h) as storage temperature and NaCl concentration increased. The effect of combinations of NaCl and low-NaNO2 on L. monocytogenes growth was not observed at 4 degrees C and 10 degrees C, but it was observed at 15 degrees C, regardless of atmospheric conditions. Conclusion: These results indicate that low concentrations of NaNO2 and NaCl in emulsion-type sausage may not be sufficient to prevent L. monocytogenes growth, regardless of whether they are vacuum-packaged and stored at low temperatures. Therefore, additional techniques are necessary for L. monocytogenes control in the product. |
| Databáze: | OpenAIRE |
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