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Título: | Effect of high pressure treatment on the survival of Listeria monocytogenes Scott A in sliced vacuum-packaged Iberian and Serrano cured hams |
Autor: | Morales, Pilar CSIC ORCID; Calzada, Javier CSIC ORCID; Núñez, Manuel | Fecha de publicación: | oct-2010 | Editor: | International Association for Food Protection | Citación: | Journal of Food Protection 69(10): 2539-2543(5) | Resumen: | High-pressure treatment is useful for increasing the microbiological safety of ready-to-eat foods. With dry-cured hams, this treatment can be applied to the finished product after slicing and vacuum packaging. The effect of high-pressure treatment on the survival of inoculated Listeria monocytogenes Scott A and on the sensory characteristics of two Spanish dry-cured hams, Iberian and Serrano, was investigated. Ham slices were inoculated with L. monocytogenes at 6 × 106 CFU/g and held at 4°C for 20 h before high-pressure treatment. During this holding period, the population of the pathogen declined by 0.44 and 0.51 log CFU/g in Iberian and Serrano hams, respectively. Treatment at 450 MPa for 10 min at 12°C reduced L. monocytogenes populations by 1.50 and 1.16 log CFU/g in Iberian and Serrano hams, respectively. During the first week of storage at 4 or 8°C, L. monocytogenes populations declined by an average 0.89 log CFU/g in pressurized Iberian ham and 2.09 log CFU/g in pressurized Serrano ham. After 60 days at 4 or 8°C, the respective populations in pressurized and control hams were 3.24 and 4.70 log CFU/g for Iberian ham and 2.73 and 5.07 log CFU/g for Serrano ham. The color parameters L and a were not influenced by high-pressure treatment, and parameter b was increased only in Iberian ham. Sensory characteristics of hams were not affected by high-pressure treatment. Treatment of Iberian and Serrano hams at 450 MPa for 10 min significantly reduced the population of L. monocytogenes Scott A without a detrimental effect on the sensory characteristics of the hams. | Descripción: | PMID: 17066942 | Versión del editor: | http://www.ncbi.nlm.nih.gov/pubmed/17066942 | URI: | http://hdl.handle.net/10261/41801 | ISSN: | 1364-727X | E-ISSN: | 1471-0307 |
Aparece en las colecciones: | (ICVV) Artículos |
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