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Título: | Combined effect of high hydrostatic pressure (HHP) and antimicrobial from agro-industrial by-products against S. typhimurium |
Autor: | Sanz Puig, María CSIC; Moreno, Patricia; Pina Pérez, Maria Consuelo CSIC; Rodrigo Aliaga, Dolores CSIC ORCID; Martínez López, Antonio CSIC ORCID | Palabras clave: | HHP By-products Natural antimicrobials S. typhimurium |
Fecha de publicación: | 14-nov-2016 | Editor: | Elsevier | Citación: | LWT-Food Science and Technology 77: 126-133 (2017) | Resumen: | The inactivation potential of HHP treatment (200 MPa-2 min) was evaluated against Salmonella enterica serovar Typhimurium in cauliflower and mandarin by-product infusions at 37 and 10 °C. By-product infusions exerted a strong antimicrobial effect used alone, achieving 5 log cycles of bacterial reduction for cauliflower by-product infusion after 10 h and for mandarin by-product infusion after 80 h, at 37 °C. The HHP treatment caused only one log cycle of cellular damage, but when inoculated cauliflower or mandarin by-product infusions were subjected to HHP treatment the antimicrobial effect against S. Typhimurium was enhanced, achieving 5 log cycles of inactivation in 6 h at 37 °C in both cases. Inactivation curves were adjusted to the Weibull equation and the kinetic parameters (b and n) were obtained. When HHP treatment was combined with by-product infusions, the inactivation rates were greater than when either of the by-product infusions was added separately. In conclusion, a synergistic antimicrobial effect against S. Typhimurium appeared to take place when HHP treatment was combined with cauliflower or mandarin by-product infusion. These infusions could be considered as an additional microbial control measure to guarantee the food safety and food quality of pasteurized food products that are stored under refrigeration. | Versión del editor: | http://dx.doi.org/10.1016/j.lwt.2016.11.031 | URI: | http://hdl.handle.net/10261/141180 | DOI: | 10.1016/j.lwt.2016.11.031 | ISSN: | 0023-6438 |
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