130909 20240201151019.0 doi 10.1128/AEM.02010-12 sideral 80092 ART-2012-80092 eng Gayán, E. Universidad de Zaragoza (orcid)0000-0002-5895-2157 Inactivation of Salmonella enterica by UV-C light Alone and in combination with mild temperatures 2012 The aim of this investigation was to study the efficacy of the combined processes of UV light and mild temperatures for the inactivation of Salmonella enterica subsp. enterica and to explore the mechanism of inactivation. The doses to inactivate the 99.99% (4D) of the initial population ranged from 18.03 (Salmonella enterica serovar Typhimurium STCC 878) to 12.75 J ml−1 (Salmonella enterica serovar Enteritidis ATCC 13076). The pH and water activity of the treatment medium did not change the UV tolerance, but it decreased exponentially by increasing the absorption coefficient. An inactivating synergistic effect was observed by applying simultaneous UV light and heat treatment (UV-H). A less synergistic effect was observed by applying UV light first and heat subsequently. UV did not damage cell envelopes, but the number of injured cells was higher after a UV-H treatment than after heating. The synergistic effect observed by combining simultaneous UV and heat treatment opens the possibility to design combined treatments for pasteurization of liquid food with high UV absorptivity, such as fruit juices. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/CICYT-FEDER/CIT-020000-2009-40 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.678 2012 BIOTECHNOLOGY & APPLIED MICROBIOLOGY 30 / 156 = 0.192 2012 Q1 T1 MICROBIOLOGY 29 / 116 = 0.25 2012 Q1 T1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Serrano, M. J. Universidad de Zaragoza (orcid)0000-0003-3850-9833 Raso, J. Universidad de Zaragoza (orcid)0000-0003-3957-9091 Álvarez, I. Universidad de Zaragoza (orcid)0000-0003-2430-858X Condón, S. Universidad de Zaragoza (orcid)0000-0002-1902-0648 2008 780 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Tecnología de Alimentos 78, 23 (2012), 8353-8361 Appl. environ. microbiol. Applied and environmental microbiology 1098-5336 768506 http://zaguan.unizar.es/record/130909/files/texto_completo.pdf Postprint 629027 http://zaguan.unizar.es/record/130909/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130909 articulos driver 2024-02-01-14:40:45 ARTICLE