Modelling the piezo-protection effect exerted by lactate on the high pressure resistance of Listeria monocytogenes in cooked ham
Fecha de publicación
2020-12-24ISSN
0963-9969
Resumen
Food safety is often based on the application of several preservative (hurdle) factors whose combination must be smartly selected. The aim of the present study was to evaluate the effect of lactate and diacetate on the high pressure processing (HPP) inactivation of three L. monocytogenes strains (CTC1011, CTC1034 and Scott A) in sliced cooked ham. Inoculated vacuum-packed slices of cooked ham formulated without organic acids and with lactate, diacetate or the combination of both were pressurized at 400 MPa for different holding times and the inactivation kinetics were characterised by fitting primary and secondary models. The shape of the inactivation curves for L. monocytogenes depended on both product formulation and strain. Interestingly, lactate caused a dose-dependent piezo-protection in all three strains, as the HPP inactivation rate decreased in cooked ham formulated with increasing amounts of lactate and in comparison with the control product. The design, validation and implementation of HPP requires a tailor-made approach, considering product formulation and selection of strain/s.
Tipo de documento
Artículo
Versión del documento
Versión aceptada
Lengua
English
Materias (CDU)
663/664 - Alimentos y nutrición. Enología. Aceites. Grasas
Páginas
29
Publicado por
Elsevier
Publicado en
Food Research International
Citación
Serra-Castelló, Cristina, Anna Jofré, Nicoletta Belletti, Margarita Garriga, and Sara Bover-Cid. 2021. "Modelling The Piezo-Protection Effect Exerted By Lactate On The High Pressure Resistance Of Listeria Monocytogenes In Cooked Ham". Food Research International 140: 110003. doi:10.1016/j.foodres.2020.110003.
Número del acuerdo de la subvención
INIA/Programa Nacional de Proyectos de Investigación Fundamental/RTA2012-00030-00-00/ES/Seguridad microbiológica a través de la microbiología predictiva y evaluación cuantitativa del riesgo en productos cárnicos cocidos listos para el consumo y mejorados nutricionalmente y/o tratados por altas presiones/
Program
Funcionalitat i Seguretat Alimentària
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