Effect of combined physico-chemical treatments based on enterocin AS-48 on the control of Listeria monocytogenes and Staphylococcus aureus in a model cooked ham
Enterocin AS-48 was tested alone or in combination with chemical preservatives and/or heat against Listeria monocytogenes and Staphylococcus aureus in a cooked ham model system. AS-48 (20, 40 and 60 lg g1) alone was active against L. monocytogenes at 5 and 15 C, but it was not sufficient to avoid re...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2010 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/414116 |
| Acceso en línea: | http://hdl.handle.net/10261/414116 https://doi.org/10.1016/j.foodcont.2009.07.010 |
| Access Level: | acceso abierto |
| Palabra clave: | Biopreservation Hurdle technology Cooked ham Enterocin AS-48 Listeria Monocytogenes Staphylococcus aureus |
| Sumario: | Enterocin AS-48 was tested alone or in combination with chemical preservatives and/or heat against Listeria monocytogenes and Staphylococcus aureus in a cooked ham model system. AS-48 (20, 40 and 60 lg g1) alone was active against L. monocytogenes at 5 and 15 C, but it was not sufficient to avoid regrowth of Listeria during the 60 days storage. Combination of AS-48 (40 lg g1) with nitrite/nitrate, pentasodium tripolyphosphate, sodium benzoate or potassium sorbate improved the anti-listeria effect during storage at 5 C. The most effective combination was AS-48-nitrite/nitrate (0.007%) that reduced listeria below detection level from the beginning to end of storage. Although much more resistant, S. aureus was also inhibited by AS-48 alone at 5 C, and especially in combinations with nitrite/nitrate, pentasodium tripolyphosphate, sodium lactate and sodium acetate. Best results against both pathogens were obtained when sodium pyrophosphate was applied in combination with 60 lg g1 AS-48. Sub-lethal heat (60 C, 2 min) clearly increased AS-48 activity against both Listeria and Staphylococcus |
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