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Título:
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High-pressure processing and antimicrobial biodegradable packaging to control Listeria monocytogenes during storage of cooked ham
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Autor/a:
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Marcos Muntal, Begonya; Aymerich Calvet, Mª Teresa; Monfort, J. M.; Garriga Turón, Margarita
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Otros autores:
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IRTA. Recerca i Tecnologia Agroalimentàries |
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Abstract:
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The efficiency of combining high-pressure processing (HPP) and active packaging technologies to control Listeria monocytogenes growth during the shelf life of artificially inoculated cooked ham was assessed. Three lots of cooked ham were prepared: control, packaging with alginate films, and packaging with antimicrobial alginate films containing enterocins. After packaging, half of the samples were pressurized. Sliced cooked ham stored at 6 °C experienced a quick growth of L. monocytogenes. Both antimicrobial packaging and pressurization delayed the growth of the pathogen. However, at 6 °C the combination of antimicrobial packaging and HPP was necessary to achieve a reduction of inoculated levels without recovery during 60 days of storage. Further storage at 6 °C of pressurized antimicrobial packed cooked ham resulted in L. monocytogenes levels below the detection limit (day 90). On the other hand, storage at 1 °C controlled the growth of the pathogen until day 39 in non-pressurized ham, while antimicrobial packaging and storage at 1 °C exerted a bacteriostatic effect for 60 days. All HPP lots stored at 1 °C led to counts <100 CFU/g at day 60. Similar results were observed when combining both technologies. After a cold chain break no growth of L. monocytogenes was observed in pressurized ham packed with antimicrobial films, showing the efficiency of combining both technologies. |
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Fecha de creación:
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2008 |
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Materia(s):
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Pernil -- Envasament
Aliments -- Microbiologia |
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Derechos:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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Páginas:
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16 p. |
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Tipo de documento:
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Artículo
Artículo - Borrador |
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Editor:
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Elsevier
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Compartir:
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